The varied structures of cobalt(II)–pyridine (py)–sulfate: [Co(SO₄)(py)₄]_n, [Co₂(SO₄)₂(py)₆]_n, and [Co₃(SO₄)₃(py)₁₁]_n

The crystal structures of two new forms of cobalt–pyridine–sulfate complexes are presented. The feature infinite chains of metal–pyridine units connected by bridging sulfate anions, which are distinct from the only previously reported structure of a cobalt–pyridine–sulfate compound.

Abstract

The solid-state structures of two cobalt–pyridine–sulfate compounds, namely catena-poly[[tetra­kis­(pyridine-κN)cobalt(II)]-μ-sulfato-κ² O:O′], [Co(SO₄)(C₅H₅N)₄]_n, (1), and catena-poly[[tetra­kis­(pyridine-κN)cobalt(II)]-μ-sulfato-κ³ O:O′,O′′-[bis­(pyridine-κN)cobalt(II)]-μ-sulfato-κ³ O,O′:O′′]_n, [Co₂(SO₄)₂(C₅H₅N)₆]_n, (2), are reported. Compound (1) displays a polymeric structure, with infinite chains of Co^II cations adopting octa­hedral N₄O₂ coordination environments that involve four pyridine ligands and two bridging sulfate ions. Compound (2) is also polymeric with infinite chains of Co^II cations. The first Co center has an octa­hedral N₄O₂ coordination environment that involves four pyridine ligands and two bridging sulfate ligands. The second Co center has an octa­hedral N₂O₄ coordination environment that involves two pyridine ligands and two bridging sulfate ions that chelate the Co atom. The structure of (2) was refined as a two-component inversion twin.

Chemical context  

The synthesis of metal–pyrdine–sulfates has been reported since the 19th century, when Jørgensen’s chain theory was still the prevailing hypothesis (Reitzenstein, 1894 ▸; Howe, 1898 ▸). Since that time, the structural understanding of metal complexes has greatly increased, first with the acceptance of Werner’s coordination theory (Werner, 1893 ▸), with crystal field theory from Bethe in 1929 (Bethe, 1929 ▸), and the modifications of theory in the ninety years since. Despite the long history of these compounds, their crystallographic study is rather limited. Before we began a crystallographic examination of metal–pyridine–sulfates in 2018, there were only two examples of such complexes without other ligands or components reported in the literature (Cotton & Reid, 1984 ▸; Memon et al., 2006 ▸).

Since we began studying the structural chemistry of metal–pyridine–sulfates, we have observed many different structural motifs in the complexes. The coordination environment of each compound can usually be predicted with crystal field theory, although the exact nature is dependent upon the number of pyridines bound and the binding mode of the sulfate anion. The sulfate anion can have a number of different coordination modes, including μ-sulfato-κ²-O:O, μ-sulfato-κ²-O:O′ and μ-sulfato-κ³-O:O′:O". Herein we report two new structures of cobalt–pyridine–sulfates formed by altering the growth conditions and compare these structures with the previously reported structure of a cobalt–pyridine–sulfate and the structures of related complexes.

Structural commentary  

The asymmetric unit of the pink crystals of (1) consists of two pyridine mol­ecules and one half of a sulfate anion coordinated to a cobalt atom sitting on an inversion center (Fig. 1 ▸ a). When grown out, the cobalt ion shows an octa­hedral coordination environment (Fig. 1 ▸ b). The equatorial positions of the octa­hedron are occupied by four pyridine ligands in a square-planar arrangement. The CoN₄ unit exhibits planarity enforced by symmetry, with cis N—Co—N angles of 86.45 (6) and 93.55 (6)°. To complete the octa­hedron, the axial positions are occupied by two sulfate ions, with an inversion enforced O—Co—O angle of 180° and cis O—Co—N angles of 88.87 (6) and 91.67 (6)°. The pyridine rings are rotated from the CoN₄ plane by dihedral angles of 47.30 (10) and 78.33 (9)°. The 78.33 (9)° angles are constrained by two C—H⋯O inter­actions between the ortho hydrogen atoms and the two trans sulfates (Table 1 ▸).

Figure 1.

The mol­ecular structure of compound (1), including (a) the asymmetric unit and (b) the coordination environment around Co1. Displacement ellipsoids are drawn at the 50% probability level. H atoms are drawn as spheres of arbitrary radius. C—H⋯O inter­actions (Table 1 ▸) are shown as dashed lines. [Symmetry codes: (i) 1 − x, 1 − y, 1 − z; (ii) x, 1 − y, − + z; (iii) 1 − x, y,  − z].

Table 1. Hydrogen-bond geometry (Å, °) for (1) .

D—H⋯A	D—H	H⋯A	D⋯A	D—H⋯A
C6—H6A⋯O1i	0.93	2.51	3.106 (2)	122
C6—H6A⋯O2i	0.93	2.51	3.429 (3)	171
C10—H10A⋯O1	0.93	2.48	3.046 (2)	120
C10—H10A⋯O2ii	0.93	2.43	3.353 (3)	171

Symmetry codes: (i) ; (ii) .

The asymmetric unit of the purple crystals of (2) consists of two cobalt atoms, six coordinated pyridines and two sulfate anions (Fig. 2 ▸ a). There are two crystallographically unique cobalt atoms, with Co1 (Fig. 2 ▸ b) displaying an octa­hedral N₄O₂ coordination environment and Co2 (Fig. 2 ▸ c) exhibiting an octa­hedral N₂O₄ coordination geometry.

Figure 2.

The mol­ecular structure of compound (2), including (a) the asymmetric unit, (b) the coordination environment around Co1, and (c) the coordination environment around Co2. Displacement ellipsoids are drawn at the 50% probability level. H atoms are drawn as spheres of arbitrary radius. C—H⋯O inter­actions (Table 2 ▸) are shown as dashed lines. [Symmetry code: (i) −1 + x, −1 + y, −1 + z].

Co1 has four pyridine ligands occupying the equatorial positions of an octa­hedron, with the CoN₄ plane showing a maximum deviation from planarity of 0.018 Å. Two sulfate anions occupy the axial positions to complete the octa­hedral coordination. The cis N—Co—N angles have values ranging from 87.48 (13) to 93.18 (12)°, and the trans O—Co—O angle is 173.43 (12)°. The planes of the four pyridine rings are rotated from the equatorial CoN₄ plane by dihedral angles of 58.6 (2), 64.6 (2), 65.6 (2), and 73.1 (2)°. Two of the rings show one C—H⋯O inter­action with an ortho hydrogen atom, one ring shows two C—H⋯O inter­actions with two ortho hydrogen atoms, and the fourth ring shows no C—H⋯O inter­actions (Table 2 ▸).

Table 2. Hydrogen-bond geometry (Å, °) for (2) .

D—H⋯A	D—H	H⋯A	D⋯A	D—H⋯A
C1—H1A⋯O6	0.95	2.63	3.563 (6)	167
C2—H2A⋯O2i	0.95	2.52	3.219 (5)	131
C5—H5A⋯O4	0.95	2.42	3.009 (5)	120
C6—H6A⋯O5	0.95	2.56	3.054 (5)	112
C6—H6A⋯O7	0.95	2.47	3.322 (6)	149
C10—H10A⋯O4	0.95	2.53	3.010 (5)	112
C12—H12A⋯O7ii	0.95	2.60	3.271 (5)	128
C15—H15A⋯O5	0.95	2.45	3.017 (5)	118
C16—H16A⋯O2	0.95	2.19	3.139 (6)	176
C20—H20A⋯O5	0.95	2.51	3.091 (5)	119
C20—H20A⋯O6	0.95	2.32	3.272 (5)	175
C25—H25A⋯O8	0.95	2.55	3.162 (5)	123
C30—H30A⋯O7	0.95	2.54	3.116 (5)	119

Symmetry codes: (i) ; (ii) .

Co2 is bound by two pyridine ligands and two chelating sulfate anions to give an octa­hedral coordination environment. The pyridine rings adopt a cis configuration, with an N—Co—N angle of 93.63 (13)°. The two sulfate ligands exhibit O—Co—O bite angles of 65.90 (10) and 66.37 (10)°. The other cis O—Co—O angles are 86.87 (11), 98.98 (11), and 102.84 (11)°, and the six cis N—Co—O angles range from 92.49 (12) to 98.33 (13)°. Each pyridine ring is involved in ortho C—H⋯O inter­actions (Table 2 ▸).

Supra­molecular features  

The Co^II atoms in compound (1) are linked together into infinite chains along the [001] direction through sulfate anions with O—S—O bridges (Figs. 3 ▸ a, 4 ▸ a). Between each successive tetra­pyridine cobalt unit, there are parallel slipped π–π inter­actions [inter-centroid distance: 3.637 (1) Å, inter-planar distance: 3.611 (1) Å, slippage: 0.435 (1) Å].

Figure 3.

The infinite chains of (a) compound (1) along [001], (b) compound (2) along [111], and (c) the previously reported cobalt–pyridine-sulfate complex [Co₃(SO₄)₃(C₅H₅N)₁₁]_n along [001] (Pham et al., 2019 ▸). Displacement ellipsoids are drawn at the 50% probability level. H atoms are omitted for clarity. The π–π inter­actions in (1) are shown as dashed lines.

Figure 4.

The packing of (a) compound (1) along the c-axis and (b) compound (2) along the b-axis. Displacement ellipsoids are drawn at the 50% probability level. H atoms are omitted for clarity.

The Co^II atoms in compound (2) are linked together into infinite chains along the [111] direction through the sulfate anions (Figs. 3 ▸ b, 4 ▸ b). The chain alternates between tetra­pyridine cobalt units and di­pyridine cobalt units. No π–π inter­actions are observed in the crystal.

Database survey  

In a prior publication, we reported the structure of another cobalt–pyridine–sulfate [Co₃(SO₄)₃(C₅H₅N)₁₁)]_n, which was grown at a lower concentration of cobalt. This structure shows two successive octa­hedral cobalt atoms with N₄O₂ coordination, where each atom is coordinated to four pyridines and two bridging sulfates. The third cobalt atom in the chain shows N₃O₃ coordination where three pyridines are bound and there are two sulfates bound, one of which is chelating to the cobalt (Pham et al., 2018 ▸). Fig. 3 ▸ compares the chain structure of this complex with those of compounds (1) and (2). In compound (1), every cobalt atom possesses an octa­hedral N₄O₂ coord­in­ation. This complex is isostructural with the structure observed for the iron and nickel pyridine–sulfate complexes (Roy et al., 2018 ▸). This structural motif is also consistent with that observed for the 4-picoline–sulfate structures of iron, cobalt, nickel and cadmium (Pham et al., 2019 ▸). In compound (2), the cobalt atoms alternate between N₄O₂ coordination and N₂O₄ coordination. This tetra­pyridine/bi­pyridine alternation is similar to what is observed in the zinc–pyridine–sulfate structure, which alternates between octa­hedral and tetra­hedral zinc centers. In the case of cobalt, the bis­(pyridine) cobalt center is still octa­hedral because the two coordinated sulfates both chelate to the cobalt. The end result is an infinite chain of octa­hedral cobalt atoms, which is true in compound (1) and the previously reported cobalt–pyridine–sulfate complex. The methane­sulfato complexes of cobalt (II) have also been reported as octa­hedral tetra­kis­(pyridine), [Co(SO₃CH₃)₂(py)₄], and octa­hedral bis­(pyridine), [Co(SO₃CH₃)₂(py)₂], compounds, consistent with the two independent cobalt centers observed in (2) (Johnson et al., 1977 ▸).

Synthesis and crystallization  

For compound (1), 40 mg of cobalt sulfate hepta­hydrate (J. T. Baker) was dissolved in pyridine (2 mL, Fischer Chemical) and distilled water (100 µL) in a 20 mL vial. The vial was heated to 338 K for 48 h, after which single crystals suitable for X-ray diffraction studies were isolated from the reaction mixture.

For compound (2), 48 mg of cobalt sulfate hepta­hydrate (J. T. Baker) was dissolved in pyridine (2 mL, Fischer Chemical) and distilled water (30 µL) in a 20 mL vial. The vial was heated to 358 K for 48 h, after which single crystals suitable for X-ray diffraction studies were isolated from the reaction mixture.

Refinement  

Crystal data, data collection and structure refinement details are summarized in Table 3 ▸. All structure solutions were obtained by intrinsic phasing. All non-hydrogen atoms were refined anisotropically (SHELXL) by full-matrix least squares on F ². Hydrogen atoms were placed in calculated positions and then refined with a riding model with C—H bond lengths of 0.95 Å and with isotropic displacement parameters set to 1.20 U _eq of the parent C atom. The structre of (2) was refined as a two-component inversion twin, BASF = 0.165 (13).

Table 3. Experimental details.

	(1)	(2)
Crystal data
Chemical formula	[Co(SO4)(C5H5N)4]	[Co2(SO4)2(C5H5N)6]
M r	471.39	784.58
Crystal system, space group	Monoclinic, C2/c	Triclinic, P1
Temperature (K)	295	200
a, b, c (Å)	18.6323 (18), 10.0803 (9), 11.9403 (11)	9.5795 (6), 9.7612 (5), 10.7219 (6)
α, β, γ (°)	90, 115.945 (3), 90	98.488 (2), 107.697 (2), 115.948 (2)
V (Å3)	2016.6 (3)	811.46 (8)
Z	4	1
Radiation type	Mo Kα	Mo Kα
μ (mm−1)	0.99	1.21
Crystal size (mm)	0.28 × 0.13 × 0.06	0.25 × 0.20 × 0.02
Data collection
Diffractometer	Bruker APEXIII CMOS	Bruker APEXIII photon2
Absorption correction	Multi-scan (SADABS; Bruker, 2016 ▸)	Multi-scan (SADABS; Bruker, 2016 ▸)
T min, T max	0.667, 0.745	0.661, 0.745
No. of measured, independent and observed [I > 2σ(I)] reflections	20212, 1854, 1572	22679, 6013, 5906
R int	0.071	0.026
(sin θ/λ)max (Å−1)	0.604	0.610
Refinement
R[F 2 > 2σ(F 2)], wR(F 2), S	0.027, 0.063, 1.02	0.026, 0.072, 1.03
No. of reflections	1854	6013
No. of parameters	139	434
No. of restraints	0	3
H-atom treatment	H-atom parameters constrained	H-atom parameters constrained
Δρmax, Δρmin (e Å−3)	0.24, −0.24	0.79, −0.30
Absolute structure	–	Refined as an inversion twin
Absolute structure parameter	–	0.165 (13)

Computer programs: APEX3 and SAINT (Bruker, 2016 ▸), SHELXT (Sheldrick, 2015a ▸), SHELXL2014 (Sheldrick, 2015b ▸), OLEX2 (Dolomanov et al., 2009 ▸), SHELXTL (Sheldrick, 2008 ▸), and publCIF (Westrip, 2010 ▸).

Supplementary Material

CCDC references: 1965662, 1965663, 1965662, 1965663

Additional supporting information: crystallographic information; 3D view; checkCIF report

supplementary crystallographic information

catena-Poly[[tetrakis(pyridine-κN)cobalt(II)]-µ-sulfato-κ²O:O'] (1) . Crystal data

[Co(SO4)(C5H5N)4]	F(000) = 972
Mr = 471.39	Dx = 1.553 Mg m−3
Monoclinic, C2/c	Mo Kα radiation, λ = 0.71073 Å
a = 18.6323 (18) Å	Cell parameters from 8333 reflections
b = 10.0803 (9) Å	θ = 3.3–25.3°
c = 11.9403 (11) Å	µ = 0.99 mm−1
β = 115.945 (3)°	T = 295 K
V = 2016.6 (3) Å3	BLOCK, pink
Z = 4	0.28 × 0.13 × 0.06 mm

catena-Poly[[tetrakis(pyridine-κN)cobalt(II)]-µ-sulfato-κ²O:O'] (1) . Data collection

Bruker APEXIII CMOS diffractometer	1572 reflections with I > 2σ(I)
φ and ω scans	Rint = 0.071
Absorption correction: multi-scan (SADABS; Bruker, 2016)	θmax = 25.4°, θmin = 3.3°
Tmin = 0.667, Tmax = 0.745	h = −22→22
20212 measured reflections	k = −12→12
1854 independent reflections	l = −14→14

catena-Poly[[tetrakis(pyridine-κN)cobalt(II)]-µ-sulfato-κ²O:O'] (1) . Refinement

Refinement on F2	Hydrogen site location: inferred from neighbouring sites
Least-squares matrix: full	H-atom parameters constrained
R[F2 > 2σ(F2)] = 0.027	w = 1/[σ2(Fo2) + (0.0254P)2 + 2.4084P] where P = (Fo2 + 2Fc2)/3
wR(F2) = 0.063	(Δ/σ)max < 0.001
S = 1.02	Δρmax = 0.24 e Å−3
1854 reflections	Δρmin = −0.24 e Å−3
139 parameters	Extinction correction: SHELXL, Fc*=kFc[1+0.001xFc2λ3/sin(2θ)]-1/4
0 restraints	Extinction coefficient: 0.0019 (3)

catena-Poly[[tetrakis(pyridine-κN)cobalt(II)]-µ-sulfato-κ²O:O'] (1) . Special details

Geometry. All esds (except the esd in the dihedral angle between two l.s. planes) are estimated using the full covariance matrix. The cell esds are taken into account individually in the estimation of esds in distances, angles and torsion angles; correlations between esds in cell parameters are only used when they are defined by crystal symmetry. An approximate (isotropic) treatment of cell esds is used for estimating esds involving l.s. planes.

catena-Poly[[tetrakis(pyridine-κN)cobalt(II)]-µ-sulfato-κ²O:O'] (1) . Fractional atomic coordinates and isotropic or equivalent isotropic displacement parameters (Ų)

	x	y	z	Uiso*/Ueq
Co1	0.5000	0.5000	0.5000	0.02070 (13)
O1	0.49333 (8)	0.59836 (16)	0.64714 (13)	0.0406 (4)
O2	0.57186 (9)	0.76549 (16)	0.79112 (15)	0.0433 (4)
N1	0.45647 (10)	0.32138 (17)	0.55318 (15)	0.0305 (4)
N2	0.37320 (9)	0.55056 (17)	0.38523 (14)	0.0257 (4)
C1	0.39850 (16)	0.3286 (3)	0.5901 (2)	0.0503 (7)
H1A	0.3780	0.4116	0.5942	0.060*
C2	0.36775 (18)	0.2191 (3)	0.6224 (3)	0.0649 (8)
H2A	0.3265	0.2285	0.6457	0.078*
C3	0.39806 (18)	0.0971 (3)	0.6200 (2)	0.0594 (8)
H3A	0.3780	0.0216	0.6410	0.071*
C4	0.45897 (19)	0.0885 (3)	0.5858 (3)	0.0582 (7)
H4A	0.4823	0.0069	0.5857	0.070*
C5	0.48541 (15)	0.2016 (2)	0.5514 (2)	0.0448 (6)
H5A	0.5257	0.1937	0.5257	0.054*
C6	0.33165 (12)	0.4887 (2)	0.2775 (2)	0.0360 (5)
H6A	0.3577	0.4259	0.2513	0.043*
C7	0.25194 (13)	0.5129 (3)	0.2028 (2)	0.0469 (6)
H7A	0.2255	0.4687	0.1274	0.056*
C8	0.21197 (12)	0.6030 (2)	0.2410 (2)	0.0404 (6)
H8A	0.1584	0.6218	0.1919	0.048*
C9	0.25326 (12)	0.6644 (2)	0.3534 (2)	0.0370 (5)
H9A	0.2276	0.7240	0.3832	0.044*
C10	0.33304 (12)	0.6372 (2)	0.42193 (19)	0.0331 (5)
H10A	0.3605	0.6809	0.4974	0.040*
S1	0.5000	0.68569 (6)	0.7500	0.01886 (16)

catena-Poly[[tetrakis(pyridine-κN)cobalt(II)]-µ-sulfato-κ²O:O'] (1) . Atomic displacement parameters (Ų)

	U11	U22	U33	U12	U13	U23
Co1	0.0187 (2)	0.0246 (2)	0.0198 (2)	0.00353 (15)	0.00935 (15)	−0.00111 (15)
O1	0.0358 (8)	0.0582 (11)	0.0268 (8)	0.0111 (8)	0.0128 (6)	−0.0138 (7)
O2	0.0303 (8)	0.0391 (9)	0.0562 (10)	−0.0150 (7)	0.0148 (7)	0.0026 (8)
N1	0.0321 (9)	0.0314 (10)	0.0290 (9)	0.0009 (8)	0.0141 (8)	0.0004 (8)
N2	0.0212 (8)	0.0300 (9)	0.0261 (9)	0.0040 (7)	0.0105 (7)	0.0013 (7)
C1	0.0583 (16)	0.0482 (16)	0.0638 (16)	0.0080 (13)	0.0445 (14)	0.0116 (13)
C2	0.0691 (19)	0.070 (2)	0.079 (2)	−0.0043 (16)	0.0536 (17)	0.0158 (16)
C3	0.083 (2)	0.0493 (17)	0.0534 (16)	−0.0231 (15)	0.0364 (15)	0.0029 (13)
C4	0.085 (2)	0.0324 (14)	0.0665 (18)	−0.0050 (13)	0.0420 (16)	−0.0024 (13)
C5	0.0510 (14)	0.0351 (13)	0.0563 (15)	−0.0006 (11)	0.0309 (12)	0.0000 (11)
C6	0.0268 (11)	0.0426 (13)	0.0359 (11)	0.0071 (10)	0.0114 (9)	−0.0080 (10)
C7	0.0286 (12)	0.0580 (16)	0.0401 (13)	0.0042 (11)	0.0021 (10)	−0.0160 (12)
C8	0.0214 (11)	0.0496 (14)	0.0440 (13)	0.0096 (10)	0.0085 (10)	0.0030 (11)
C9	0.0304 (11)	0.0438 (14)	0.0399 (12)	0.0135 (10)	0.0183 (10)	0.0025 (10)
C10	0.0282 (11)	0.0406 (12)	0.0289 (11)	0.0058 (9)	0.0110 (9)	−0.0033 (9)
S1	0.0181 (3)	0.0204 (3)	0.0206 (3)	0.000	0.0108 (3)	0.000

catena-Poly[[tetrakis(pyridine-κN)cobalt(II)]-µ-sulfato-κ²O:O'] (1) . Geometric parameters (Å, º)

Co1—O1i	2.0679 (13)	C3—C4	1.367 (4)
Co1—O1	2.0679 (13)	C3—H3A	0.9300
Co1—N1	2.1803 (17)	C4—C5	1.373 (3)
Co1—N1i	2.1803 (17)	C4—H4A	0.9300
Co1—N2	2.2105 (15)	C5—H5A	0.9300
Co1—N2i	2.2105 (15)	C6—C7	1.379 (3)
O1—S1	1.4715 (14)	C6—H6A	0.9300
O2—S1	1.4511 (14)	C7—C8	1.373 (3)
N1—C5	1.327 (3)	C7—H7A	0.9300
N1—C1	1.335 (3)	C8—C9	1.368 (3)
N2—C6	1.331 (3)	C8—H8A	0.9300
N2—C10	1.342 (2)	C9—C10	1.375 (3)
C1—C2	1.373 (4)	C9—H9A	0.9300
C1—H1A	0.9300	C10—H10A	0.9300
C2—C3	1.359 (4)	S1—O2ii	1.4511 (14)
C2—H2A	0.9300	S1—O1ii	1.4715 (14)
O1i—Co1—O1	180.0	C2—C3—H3A	121.0
O1i—Co1—N1	91.13 (6)	C4—C3—H3A	121.0
O1—Co1—N1	88.87 (6)	C3—C4—C5	119.3 (3)
O1i—Co1—N1i	88.87 (6)	C3—C4—H4A	120.3
O1—Co1—N1i	91.13 (6)	C5—C4—H4A	120.3
N1—Co1—N1i	180.0	N1—C5—C4	123.3 (2)
O1i—Co1—N2	91.66 (6)	N1—C5—H5A	118.3
O1—Co1—N2	88.34 (6)	C4—C5—H5A	118.3
N1—Co1—N2	86.45 (6)	N2—C6—C7	123.24 (19)
N1i—Co1—N2	93.55 (6)	N2—C6—H6A	118.4
O1i—Co1—N2i	88.33 (6)	C7—C6—H6A	118.4
O1—Co1—N2i	91.67 (6)	C8—C7—C6	119.3 (2)
N1—Co1—N2i	93.55 (6)	C8—C7—H7A	120.3
N1i—Co1—N2i	86.45 (6)	C6—C7—H7A	120.3
N2—Co1—N2i	180.0	C9—C8—C7	118.1 (2)
S1—O1—Co1	168.95 (11)	C9—C8—H8A	120.9
C5—N1—C1	116.6 (2)	C7—C8—H8A	120.9
C5—N1—Co1	122.80 (14)	C8—C9—C10	119.39 (19)
C1—N1—Co1	120.61 (16)	C8—C9—H9A	120.3
C6—N2—C10	116.66 (17)	C10—C9—H9A	120.3
C6—N2—Co1	120.20 (13)	N2—C10—C9	123.22 (19)
C10—N2—Co1	123.03 (13)	N2—C10—H10A	118.4
N1—C1—C2	123.1 (2)	C9—C10—H10A	118.4
N1—C1—H1A	118.5	O2—S1—O2ii	112.67 (14)
C2—C1—H1A	118.5	O2—S1—O1	110.03 (9)
C3—C2—C1	119.5 (2)	O2ii—S1—O1	108.71 (8)
C3—C2—H2A	120.2	O2—S1—O1ii	108.71 (8)
C1—C2—H2A	120.2	O2ii—S1—O1ii	110.03 (9)
C2—C3—C4	118.1 (2)	O1—S1—O1ii	106.52 (14)
C5—N1—C1—C2	−1.5 (4)	N2—C6—C7—C8	−1.4 (4)
Co1—N1—C1—C2	178.7 (2)	C6—C7—C8—C9	−0.7 (4)
N1—C1—C2—C3	1.5 (5)	C7—C8—C9—C10	1.9 (3)
C1—C2—C3—C4	0.4 (5)	C6—N2—C10—C9	−0.8 (3)
C2—C3—C4—C5	−2.1 (4)	Co1—N2—C10—C9	−176.96 (16)
C1—N1—C5—C4	−0.3 (4)	C8—C9—C10—N2	−1.2 (3)
Co1—N1—C5—C4	179.4 (2)	Co1—O1—S1—O2	−16.8 (5)
C3—C4—C5—N1	2.2 (4)	Co1—O1—S1—O2ii	107.0 (5)
C10—N2—C6—C7	2.1 (3)	Co1—O1—S1—O1ii	−134.5 (5)
Co1—N2—C6—C7	178.36 (19)

Symmetry codes: (i) −x+1, −y+1, −z+1; (ii) −x+1, y, −z+3/2.

catena-Poly[[tetrakis(pyridine-κN)cobalt(II)]-µ-sulfato-κ²O:O'] (1) . Hydrogen-bond geometry (Å, º)

D—H···A	D—H	H···A	D···A	D—H···A
C6—H6A···O1i	0.93	2.51	3.106 (2)	122
C6—H6A···O2i	0.93	2.51	3.429 (3)	171
C10—H10A···O1	0.93	2.48	3.046 (2)	120
C10—H10A···O2ii	0.93	2.43	3.353 (3)	171

Symmetry codes: (i) −x+1, −y+1, −z+1; (ii) −x+1, y, −z+3/2.

(2). Crystal data

[Co(SO4)2(C5H6N)6]	Z = 1
Mr = 784.58	F(000) = 402
Triclinic, P1	Dx = 1.606 Mg m−3
a = 9.5795 (6) Å	Mo Kα radiation, λ = 0.71073 Å
b = 9.7612 (5) Å	Cell parameters from 9920 reflections
c = 10.7219 (6) Å	θ = 2.6–25.7°
α = 98.488 (2)°	µ = 1.21 mm−1
β = 107.697 (2)°	T = 200 K
γ = 115.948 (2)°	PLATE, purple
V = 811.46 (8) Å3	0.25 × 0.20 × 0.02 mm

(2). Data collection

Bruker APEXIII photon2 diffractometer	5906 reflections with I > 2σ(I)
φ and ω scans	Rint = 0.026
Absorption correction: multi-scan (SADABS; Bruker, 2016)	θmax = 25.7°, θmin = 3.1°
Tmin = 0.661, Tmax = 0.745	h = −11→11
22679 measured reflections	k = −11→11
6013 independent reflections	l = −13→13

(2). Refinement

Refinement on F2	Hydrogen site location: inferred from neighbouring sites
Least-squares matrix: full	H-atom parameters constrained
R[F2 > 2σ(F2)] = 0.026	w = 1/[σ2(Fo2) + (0.0524P)2 + 0.1142P] where P = (Fo2 + 2Fc2)/3
wR(F2) = 0.072	(Δ/σ)max < 0.001
S = 1.03	Δρmax = 0.79 e Å−3
6013 reflections	Δρmin = −0.29 e Å−3
434 parameters	Absolute structure: Refined as an inversion twin
3 restraints	Absolute structure parameter: 0.165 (13)

(2). Special details

Geometry. All esds (except the esd in the dihedral angle between two l.s. planes) are estimated using the full covariance matrix. The cell esds are taken into account individually in the estimation of esds in distances, angles and torsion angles; correlations between esds in cell parameters are only used when they are defined by crystal symmetry. An approximate (isotropic) treatment of cell esds is used for estimating esds involving l.s. planes.

Refinement. Refined as a 2-component inversion twin. BASF 0.16482

(2). Fractional atomic coordinates and isotropic or equivalent isotropic displacement parameters (Ų)

	x	y	z	Uiso*/Ueq
Co1	0.84425 (5)	0.55261 (5)	0.61510 (4)	0.01356 (12)
Co2	0.24785 (6)	0.13866 (6)	0.10725 (5)	0.01665 (13)
S1	1.17468 (11)	0.89862 (10)	0.89114 (9)	0.01596 (19)
S2	0.51931 (11)	0.19943 (10)	0.33225 (9)	0.0164 (2)
O1	1.1869 (4)	0.8903 (3)	1.0308 (3)	0.0257 (6)
O2	1.3166 (4)	0.9028 (4)	0.8658 (4)	0.0307 (7)
O3	1.1721 (4)	1.0501 (3)	0.8887 (3)	0.0241 (6)
O4	1.0118 (3)	0.7597 (3)	0.7855 (3)	0.0244 (6)
O5	0.6576 (4)	0.3553 (3)	0.4393 (3)	0.0217 (6)
O6	0.5406 (4)	0.0691 (4)	0.3655 (3)	0.0301 (7)
O7	0.3509 (3)	0.1777 (3)	0.3224 (3)	0.0223 (6)
O8	0.5184 (4)	0.2064 (4)	0.1943 (3)	0.0230 (6)
N1	0.7283 (4)	0.4360 (4)	0.7445 (4)	0.0204 (7)
N2	0.6741 (4)	0.6487 (4)	0.5820 (4)	0.0215 (7)
N3	0.9613 (4)	0.6672 (4)	0.4849 (3)	0.0200 (7)
N4	1.0052 (4)	0.4460 (4)	0.6447 (3)	0.0176 (7)
N5	0.3110 (5)	0.3784 (4)	0.1165 (4)	0.0246 (7)
N6	0.0033 (4)	0.0704 (4)	0.0989 (4)	0.0229 (7)
C1	0.6334 (6)	0.2757 (5)	0.7094 (5)	0.0272 (9)
H1A	0.6163	0.2109	0.6247	0.033*
C2	0.5587 (6)	0.1993 (6)	0.7905 (5)	0.0336 (10)
H2A	0.4927	0.0850	0.7619	0.040*
C3	0.5820 (6)	0.2929 (7)	0.9138 (5)	0.0369 (11)
H3A	0.5347	0.2447	0.9728	0.044*
C4	0.6773 (6)	0.4601 (7)	0.9487 (5)	0.0370 (11)
H4A	0.6929	0.5281	1.0310	0.044*
C5	0.7486 (6)	0.5257 (5)	0.8629 (4)	0.0286 (9)
H5A	0.8152	0.6397	0.8889	0.034*
C6	0.5027 (6)	0.5482 (6)	0.5237 (5)	0.0306 (10)
H6A	0.4581	0.4352	0.4991	0.037*
C7	0.3906 (7)	0.6036 (7)	0.4988 (6)	0.0488 (15)
H7A	0.2711	0.5296	0.4589	0.059*
C8	0.4526 (8)	0.7670 (8)	0.5321 (7)	0.0532 (16)
H8A	0.3771	0.8074	0.5150	0.064*
C9	0.6240 (8)	0.8687 (7)	0.5899 (6)	0.0464 (14)
H9A	0.6701	0.9819	0.6137	0.056*
C10	0.7326 (6)	0.8065 (6)	0.6143 (5)	0.0296 (10)
H10A	0.8524	0.8793	0.6554	0.036*
C11	1.0601 (5)	0.8273 (5)	0.5168 (4)	0.0246 (9)
H11A	1.0821	0.8958	0.6019	0.030*
C12	1.1313 (6)	0.8974 (6)	0.4317 (5)	0.0316 (10)
H12A	1.1984	1.0113	0.4572	0.038*
C13	1.1031 (6)	0.7992 (7)	0.3097 (5)	0.0355 (11)
H13A	1.1498	0.8437	0.2491	0.043*
C14	1.0062 (6)	0.6355 (6)	0.2778 (5)	0.0354 (11)
H14A	0.9873	0.5649	0.1953	0.042*
C15	0.9365 (5)	0.5741 (5)	0.3658 (5)	0.0277 (9)
H15A	0.8676	0.4604	0.3410	0.033*
C16	1.1720 (6)	0.5345 (6)	0.7278 (6)	0.0349 (11)
H16A	1.2212	0.6471	0.7689	0.042*
C17	1.2763 (6)	0.4698 (7)	0.7568 (6)	0.0461 (14)
H17A	1.3939	0.5371	0.8169	0.055*
C18	1.2079 (7)	0.3067 (7)	0.6978 (6)	0.0444 (13)
H18A	1.2760	0.2588	0.7180	0.053*
C19	1.0382 (7)	0.2158 (6)	0.6090 (6)	0.0429 (13)
H19A	0.9879	0.1040	0.5632	0.051*
C20	0.9411 (6)	0.2882 (5)	0.5866 (5)	0.0295 (10)
H20A	0.8230	0.2227	0.5272	0.035*
C21	0.1897 (7)	0.4092 (6)	0.0510 (6)	0.0390 (11)
H21A	0.0781	0.3207	−0.0062	0.047*
C22	0.2193 (8)	0.5635 (7)	0.0626 (7)	0.0458 (13)
H22A	0.1299	0.5798	0.0139	0.055*
C23	0.3786 (8)	0.6921 (6)	0.1451 (6)	0.0475 (15)
H23A	0.4017	0.7994	0.1571	0.057*
C24	0.5055 (8)	0.6619 (6)	0.2107 (6)	0.0456 (13)
H24A	0.6186	0.7487	0.2666	0.055*
C25	0.4666 (6)	0.5049 (5)	0.1944 (5)	0.0337 (10)
H25A	0.5548	0.4861	0.2408	0.040*
C26	−0.1383 (6)	−0.0208 (6)	−0.0188 (5)	0.0321 (10)
H26A	−0.1291	−0.0677	−0.0979	0.039*
C27	−0.2969 (6)	−0.0497 (6)	−0.0301 (5)	0.0384 (11)
H27A	−0.3944	−0.1150	−0.1154	0.046*
C28	−0.3120 (6)	0.0175 (6)	0.0842 (6)	0.0368 (11)
H28A	−0.4192	0.0019	0.0782	0.044*
C29	−0.1684 (7)	0.1076 (7)	0.2070 (6)	0.0441 (13)
H29A	−0.1751	0.1530	0.2882	0.053*
C30	−0.0132 (6)	0.1308 (6)	0.2096 (5)	0.0338 (10)
H30A	0.0855	0.1927	0.2945	0.041*

(2). Atomic displacement parameters (Ų)

	U11	U22	U33	U12	U13	U23
Co1	0.0131 (2)	0.0118 (2)	0.0131 (2)	0.00517 (18)	0.00466 (18)	0.00285 (17)
Co2	0.0152 (2)	0.0145 (2)	0.0156 (2)	0.00629 (19)	0.00422 (19)	0.00207 (18)
S1	0.0135 (4)	0.0128 (4)	0.0152 (4)	0.0041 (3)	0.0040 (3)	0.0009 (3)
S2	0.0148 (4)	0.0132 (4)	0.0148 (4)	0.0049 (4)	0.0032 (4)	0.0021 (4)
O1	0.0351 (17)	0.0227 (15)	0.0163 (14)	0.0150 (13)	0.0074 (13)	0.0052 (12)
O2	0.0177 (14)	0.0232 (15)	0.0453 (19)	0.0067 (12)	0.0157 (14)	0.0028 (14)
O3	0.0320 (16)	0.0164 (14)	0.0256 (15)	0.0124 (13)	0.0133 (13)	0.0082 (12)
O4	0.0158 (13)	0.0201 (14)	0.0213 (15)	0.0030 (12)	0.0036 (12)	−0.0055 (11)
O5	0.0182 (14)	0.0174 (14)	0.0173 (14)	0.0036 (11)	0.0036 (12)	0.0004 (11)
O6	0.0295 (16)	0.0180 (15)	0.0332 (18)	0.0114 (13)	0.0037 (14)	0.0064 (13)
O7	0.0165 (14)	0.0273 (15)	0.0192 (14)	0.0085 (12)	0.0073 (11)	0.0066 (12)
O8	0.0239 (14)	0.0275 (15)	0.0170 (14)	0.0131 (13)	0.0092 (12)	0.0045 (12)
N1	0.0187 (16)	0.0204 (17)	0.0201 (17)	0.0082 (14)	0.0082 (14)	0.0073 (14)
N2	0.0273 (18)	0.0250 (18)	0.0211 (17)	0.0173 (15)	0.0134 (15)	0.0102 (14)
N3	0.0195 (16)	0.0214 (17)	0.0191 (17)	0.0099 (14)	0.0084 (14)	0.0073 (14)
N4	0.0171 (16)	0.0174 (16)	0.0188 (17)	0.0083 (13)	0.0093 (14)	0.0052 (13)
N5	0.0304 (19)	0.0205 (18)	0.0229 (18)	0.0129 (16)	0.0116 (15)	0.0061 (15)
N6	0.0189 (17)	0.0236 (17)	0.0243 (18)	0.0103 (14)	0.0092 (14)	0.0038 (14)
C1	0.031 (2)	0.026 (2)	0.033 (2)	0.0157 (19)	0.0180 (19)	0.0152 (19)
C2	0.031 (2)	0.028 (2)	0.040 (3)	0.0087 (19)	0.018 (2)	0.020 (2)
C3	0.029 (2)	0.052 (3)	0.034 (3)	0.016 (2)	0.020 (2)	0.026 (2)
C4	0.034 (3)	0.047 (3)	0.023 (2)	0.014 (2)	0.015 (2)	0.008 (2)
C5	0.029 (2)	0.029 (2)	0.020 (2)	0.0102 (19)	0.0091 (18)	0.0037 (18)
C6	0.023 (2)	0.029 (2)	0.036 (3)	0.0144 (19)	0.0078 (19)	0.0027 (19)
C7	0.024 (2)	0.052 (3)	0.055 (4)	0.024 (2)	0.001 (2)	−0.004 (3)
C8	0.046 (3)	0.056 (4)	0.061 (4)	0.043 (3)	0.005 (3)	0.007 (3)
C9	0.053 (3)	0.039 (3)	0.058 (4)	0.037 (3)	0.017 (3)	0.012 (3)
C10	0.036 (2)	0.028 (2)	0.029 (2)	0.022 (2)	0.010 (2)	0.0090 (19)
C11	0.031 (2)	0.022 (2)	0.026 (2)	0.0147 (18)	0.0138 (18)	0.0113 (17)
C12	0.033 (2)	0.032 (2)	0.041 (3)	0.018 (2)	0.022 (2)	0.023 (2)
C13	0.032 (2)	0.049 (3)	0.032 (3)	0.019 (2)	0.020 (2)	0.025 (2)
C14	0.030 (2)	0.043 (3)	0.025 (2)	0.012 (2)	0.015 (2)	0.006 (2)
C15	0.025 (2)	0.026 (2)	0.029 (2)	0.0082 (18)	0.0159 (19)	0.0061 (18)
C16	0.023 (2)	0.026 (2)	0.047 (3)	0.0133 (19)	0.008 (2)	−0.001 (2)
C17	0.024 (2)	0.043 (3)	0.055 (3)	0.021 (2)	0.000 (2)	−0.001 (3)
C18	0.042 (3)	0.045 (3)	0.060 (4)	0.035 (3)	0.018 (3)	0.017 (3)
C19	0.038 (3)	0.028 (2)	0.064 (4)	0.022 (2)	0.016 (3)	0.013 (2)
C20	0.024 (2)	0.024 (2)	0.037 (2)	0.0139 (18)	0.0080 (19)	0.0077 (19)
C21	0.035 (3)	0.036 (3)	0.051 (3)	0.020 (2)	0.017 (2)	0.024 (2)
C22	0.057 (3)	0.048 (3)	0.069 (4)	0.041 (3)	0.041 (3)	0.037 (3)
C23	0.079 (4)	0.030 (3)	0.058 (4)	0.035 (3)	0.045 (3)	0.023 (3)
C24	0.055 (3)	0.025 (2)	0.045 (3)	0.011 (2)	0.020 (3)	0.010 (2)
C25	0.038 (3)	0.021 (2)	0.032 (2)	0.011 (2)	0.010 (2)	0.0063 (19)
C26	0.024 (2)	0.035 (2)	0.030 (2)	0.013 (2)	0.0077 (19)	0.004 (2)
C27	0.020 (2)	0.041 (3)	0.039 (3)	0.012 (2)	0.003 (2)	0.004 (2)
C28	0.023 (2)	0.044 (3)	0.051 (3)	0.020 (2)	0.019 (2)	0.020 (2)
C29	0.038 (3)	0.060 (3)	0.046 (3)	0.031 (3)	0.025 (2)	0.013 (3)
C30	0.021 (2)	0.044 (3)	0.030 (2)	0.017 (2)	0.0062 (18)	0.004 (2)

(2). Geometric parameters (Å, º)

Co1—O4	2.070 (3)	C6—C7	1.376 (7)
Co1—O5	2.080 (3)	C6—H6A	0.9500
Co1—N2	2.179 (3)	C7—C8	1.377 (9)
Co1—N1	2.180 (3)	C7—H7A	0.9500
Co1—N4	2.183 (3)	C8—C9	1.356 (9)
Co1—N3	2.185 (3)	C8—H8A	0.9500
Co2—N6	2.104 (3)	C9—C10	1.398 (6)
Co2—O7	2.113 (3)	C9—H9A	0.9500
Co2—N5	2.123 (3)	C10—H10A	0.9500
Co2—O3i	2.141 (3)	C11—C12	1.385 (6)
Co2—O1i	2.185 (3)	C11—H11A	0.9500
Co2—O8	2.208 (3)	C12—C13	1.375 (7)
Co2—S1i	2.7061 (11)	C12—H12A	0.9500
Co2—S2	2.7107 (10)	C13—C14	1.370 (7)
S1—O2	1.450 (3)	C13—H13A	0.9500
S1—O4	1.476 (3)	C14—C15	1.378 (7)
S1—O1	1.483 (3)	C14—H14A	0.9500
S1—O3	1.493 (3)	C15—H15A	0.9500
S1—Co2ii	2.7062 (11)	C16—C17	1.384 (7)
S2—O6	1.451 (3)	C16—H16A	0.9500
S2—O5	1.477 (3)	C17—C18	1.379 (8)
S2—O8	1.488 (3)	C17—H17A	0.9500
S2—O7	1.500 (3)	C18—C19	1.372 (8)
O1—Co2ii	2.185 (3)	C18—H18A	0.9500
O3—Co2ii	2.141 (3)	C19—C20	1.383 (6)
N1—C5	1.337 (6)	C19—H19A	0.9500
N1—C1	1.337 (6)	C20—H20A	0.9500
N2—C10	1.333 (6)	C21—C22	1.383 (7)
N2—C6	1.355 (6)	C21—H21A	0.9500
N3—C15	1.340 (5)	C22—C23	1.364 (9)
N3—C11	1.344 (5)	C22—H22A	0.9500
N4—C16	1.339 (6)	C23—C24	1.383 (9)
N4—C20	1.340 (6)	C23—H23A	0.9500
N5—C25	1.331 (6)	C24—C25	1.379 (7)
N5—C21	1.344 (6)	C24—H24A	0.9500
N6—C30	1.331 (6)	C25—H25A	0.9500
N6—C26	1.340 (6)	C26—C27	1.381 (7)
C1—C2	1.388 (6)	C26—H26A	0.9500
C1—H1A	0.9500	C27—C28	1.380 (8)
C2—C3	1.384 (8)	C27—H27A	0.9500
C2—H2A	0.9500	C28—C29	1.378 (8)
C3—C4	1.395 (8)	C28—H28A	0.9500
C3—H3A	0.9500	C29—C30	1.393 (7)
C4—C5	1.378 (7)	C29—H29A	0.9500
C4—H4A	0.9500	C30—H30A	0.9500
C5—H5A	0.9500
O4—Co1—O5	173.43 (12)	C2—C1—H1A	118.3
O4—Co1—N2	85.60 (13)	C3—C2—C1	118.7 (4)
O5—Co1—N2	87.84 (12)	C3—C2—H2A	120.6
O4—Co1—N1	89.17 (13)	C1—C2—H2A	120.6
O5—Co1—N1	90.86 (12)	C2—C3—C4	117.9 (4)
N2—Co1—N1	87.48 (13)	C2—C3—H3A	121.0
O4—Co1—N4	96.45 (12)	C4—C3—H3A	121.0
O5—Co1—N4	90.12 (12)	C5—C4—C3	119.4 (5)
N2—Co1—N4	177.57 (14)	C5—C4—H4A	120.3
N1—Co1—N4	91.24 (12)	C3—C4—H4A	120.3
O4—Co1—N3	91.19 (13)	N1—C5—C4	122.9 (4)
O5—Co1—N3	88.85 (12)	N1—C5—H5A	118.5
N2—Co1—N3	93.18 (12)	C4—C5—H5A	118.5
N1—Co1—N3	179.27 (14)	N2—C6—C7	122.5 (5)
N4—Co1—N3	88.08 (12)	N2—C6—H6A	118.8
N6—Co2—O7	92.49 (12)	C7—C6—H6A	118.8
N6—Co2—N5	93.63 (13)	C6—C7—C8	119.6 (5)
O7—Co2—N5	98.33 (13)	C6—C7—H7A	120.2
N6—Co2—O3i	96.90 (13)	C8—C7—H7A	120.2
O7—Co2—O3i	162.62 (11)	C9—C8—C7	118.4 (5)
N5—Co2—O3i	95.64 (12)	C9—C8—H8A	120.8
N6—Co2—O1i	93.88 (13)	C7—C8—H8A	120.8
O7—Co2—O1i	98.98 (11)	C8—C9—C10	119.8 (5)
N5—Co2—O1i	160.79 (12)	C8—C9—H9A	120.1
O3i—Co2—O1i	65.90 (10)	C10—C9—H9A	120.1
N6—Co2—O8	158.65 (12)	N2—C10—C9	122.3 (5)
O7—Co2—O8	66.37 (10)	N2—C10—H10A	118.8
N5—Co2—O8	92.48 (13)	C9—C10—H10A	118.8
O3i—Co2—O8	102.84 (11)	N3—C11—C12	123.2 (4)
O1i—Co2—O8	86.87 (11)	N3—C11—H11A	118.4
N6—Co2—S1i	101.38 (10)	C12—C11—H11A	118.4
O7—Co2—S1i	130.13 (8)	C13—C12—C11	118.9 (4)
N5—Co2—S1i	127.73 (10)	C13—C12—H12A	120.6
O3i—Co2—S1i	33.37 (7)	C11—C12—H12A	120.6
O1i—Co2—S1i	33.18 (8)	C14—C13—C12	118.5 (4)
O8—Co2—S1i	90.91 (8)	C14—C13—H13A	120.8
N6—Co2—S2	125.39 (10)	C12—C13—H13A	120.8
O7—Co2—S2	33.41 (8)	C13—C14—C15	119.6 (5)
N5—Co2—S2	99.84 (10)	C13—C14—H14A	120.2
O3i—Co2—S2	133.35 (8)	C15—C14—H14A	120.2
O1i—Co2—S2	90.12 (8)	N3—C15—C14	123.0 (4)
O8—Co2—S2	33.27 (7)	N3—C15—H15A	118.5
S1i—Co2—S2	110.52 (3)	C14—C15—H15A	118.5
O2—S1—O4	110.31 (18)	N4—C16—C17	123.2 (4)
O2—S1—O1	112.58 (19)	N4—C16—H16A	118.4
O4—S1—O1	109.17 (18)	C17—C16—H16A	118.4
O2—S1—O3	111.06 (18)	C18—C17—C16	119.4 (5)
O4—S1—O3	109.08 (18)	C18—C17—H17A	120.3
O1—S1—O3	104.45 (16)	C16—C17—H17A	120.3
O2—S1—Co2ii	117.43 (14)	C19—C18—C17	117.9 (4)
O4—S1—Co2ii	132.24 (12)	C19—C18—H18A	121.1
O1—S1—Co2ii	53.72 (11)	C17—C18—H18A	121.1
O3—S1—Co2ii	52.05 (12)	C18—C19—C20	119.5 (5)
O6—S2—O5	110.02 (17)	C18—C19—H19A	120.2
O6—S2—O8	112.20 (18)	C20—C19—H19A	120.2
O5—S2—O8	109.12 (17)	N4—C20—C19	123.2 (4)
O6—S2—O7	111.68 (18)	N4—C20—H20A	118.4
O5—S2—O7	108.93 (17)	C19—C20—H20A	118.4
O8—S2—O7	104.72 (17)	N5—C21—C22	123.3 (5)
O6—S2—Co2	120.94 (13)	N5—C21—H21A	118.4
O5—S2—Co2	128.99 (12)	C22—C21—H21A	118.4
O8—S2—Co2	54.46 (11)	C23—C22—C21	119.1 (5)
O7—S2—Co2	50.87 (11)	C23—C22—H22A	120.5
S1—O1—Co2ii	93.10 (14)	C21—C22—H22A	120.5
S1—O3—Co2ii	94.57 (14)	C22—C23—C24	118.2 (4)
S1—O4—Co1	159.38 (19)	C22—C23—H23A	120.9
S2—O5—Co1	169.67 (19)	C24—C23—H23A	120.9
S2—O7—Co2	95.72 (15)	C25—C24—C23	119.5 (5)
S2—O8—Co2	92.27 (14)	C25—C24—H24A	120.3
C5—N1—C1	117.6 (4)	C23—C24—H24A	120.3
C5—N1—Co1	119.9 (3)	N5—C25—C24	123.0 (5)
C1—N1—Co1	122.6 (3)	N5—C25—H25A	118.5
C10—N2—C6	117.3 (4)	C24—C25—H25A	118.5
C10—N2—Co1	122.1 (3)	N6—C26—C27	122.9 (5)
C6—N2—Co1	120.6 (3)	N6—C26—H26A	118.5
C15—N3—C11	116.8 (4)	C27—C26—H26A	118.5
C15—N3—Co1	119.0 (3)	C28—C27—C26	119.1 (4)
C11—N3—Co1	124.2 (3)	C28—C27—H27A	120.4
C16—N4—C20	116.7 (4)	C26—C27—H27A	120.4
C16—N4—Co1	121.3 (3)	C29—C28—C27	118.7 (4)
C20—N4—Co1	121.9 (3)	C29—C28—H28A	120.7
C25—N5—C21	117.0 (4)	C27—C28—H28A	120.7
C25—N5—Co2	122.4 (3)	C28—C29—C30	118.5 (5)
C21—N5—Co2	120.4 (3)	C28—C29—H29A	120.7
C30—N6—C26	117.5 (4)	C30—C29—H29A	120.7
C30—N6—Co2	119.9 (3)	N6—C30—C29	123.2 (4)
C26—N6—Co2	122.3 (3)	N6—C30—H30A	118.4
N1—C1—C2	123.4 (4)	C29—C30—H30A	118.4
N1—C1—H1A	118.3
O2—S1—O1—Co2ii	108.27 (16)	Co1—N2—C10—C9	178.3 (4)
O4—S1—O1—Co2ii	−128.88 (15)	C8—C9—C10—N2	0.4 (9)
O3—S1—O1—Co2ii	−12.33 (17)	C15—N3—C11—C12	1.7 (6)
O2—S1—O3—Co2ii	−109.00 (18)	Co1—N3—C11—C12	−179.2 (3)
O4—S1—O3—Co2ii	129.22 (15)	N3—C11—C12—C13	−1.4 (7)
O1—S1—O3—Co2ii	12.61 (17)	C11—C12—C13—C14	−0.4 (7)
O2—S1—O4—Co1	1.7 (7)	C12—C13—C14—C15	1.6 (7)
O1—S1—O4—Co1	−122.5 (6)	C11—N3—C15—C14	−0.3 (6)
O3—S1—O4—Co1	124.0 (6)	Co1—N3—C15—C14	−179.5 (4)
Co2ii—S1—O4—Co1	179.6 (5)	C13—C14—C15—N3	−1.4 (7)
O6—S2—O5—Co1	−43.6 (11)	C20—N4—C16—C17	−1.2 (8)
O8—S2—O5—Co1	−167.1 (11)	Co1—N4—C16—C17	175.5 (4)
O7—S2—O5—Co1	79.2 (11)	N4—C16—C17—C18	0.4 (9)
Co2—S2—O5—Co1	133.7 (10)	C16—C17—C18—C19	1.7 (9)
O6—S2—O7—Co2	−112.94 (17)	C17—C18—C19—C20	−2.8 (9)
O5—S2—O7—Co2	125.34 (15)	C16—N4—C20—C19	0.0 (7)
O8—S2—O7—Co2	8.72 (18)	Co1—N4—C20—C19	−176.7 (4)
O6—S2—O8—Co2	113.01 (16)	C18—C19—C20—N4	2.0 (8)
O5—S2—O8—Co2	−124.80 (14)	C25—N5—C21—C22	−0.8 (8)
O7—S2—O8—Co2	−8.31 (17)	Co2—N5—C21—C22	174.2 (4)
C5—N1—C1—C2	−1.2 (6)	N5—C21—C22—C23	−0.5 (8)
Co1—N1—C1—C2	180.0 (3)	C21—C22—C23—C24	1.8 (8)
N1—C1—C2—C3	0.4 (7)	C22—C23—C24—C25	−1.9 (8)
C1—C2—C3—C4	1.2 (7)	C21—N5—C25—C24	0.7 (7)
C2—C3—C4—C5	−2.1 (7)	Co2—N5—C25—C24	−174.2 (4)
C1—N1—C5—C4	0.3 (7)	C23—C24—C25—N5	0.6 (8)
Co1—N1—C5—C4	179.2 (4)	C30—N6—C26—C27	2.0 (7)
C3—C4—C5—N1	1.3 (7)	Co2—N6—C26—C27	−171.6 (4)
C10—N2—C6—C7	−0.5 (7)	N6—C26—C27—C28	−0.1 (8)
Co1—N2—C6—C7	−178.9 (4)	C26—C27—C28—C29	−1.8 (8)
N2—C6—C7—C8	0.8 (9)	C27—C28—C29—C30	1.8 (8)
C6—C7—C8—C9	−0.5 (10)	C26—N6—C30—C29	−2.1 (7)
C7—C8—C9—C10	−0.1 (10)	Co2—N6—C30—C29	171.7 (4)
C6—N2—C10—C9	−0.1 (7)	C28—C29—C30—N6	0.2 (8)

Symmetry codes: (i) x−1, y−1, z−1; (ii) x+1, y+1, z+1.

(2). Hydrogen-bond geometry (Å, º)

D—H···A	D—H	H···A	D···A	D—H···A
C1—H1A···O6	0.95	2.63	3.563 (6)	167
C2—H2A···O2iii	0.95	2.52	3.219 (5)	131
C5—H5A···O4	0.95	2.42	3.009 (5)	120
C6—H6A···O5	0.95	2.56	3.054 (5)	112
C6—H6A···O7	0.95	2.47	3.322 (6)	149
C10—H10A···O4	0.95	2.53	3.010 (5)	112
C12—H12A···O7iv	0.95	2.60	3.271 (5)	128
C15—H15A···O5	0.95	2.45	3.017 (5)	118
C16—H16A···O2	0.95	2.19	3.139 (6)	176
C20—H20A···O5	0.95	2.51	3.091 (5)	119
C20—H20A···O6	0.95	2.32	3.272 (5)	175
C25—H25A···O8	0.95	2.55	3.162 (5)	123
C30—H30A···O7	0.95	2.54	3.116 (5)	119

Symmetry codes: (iii) x−1, y−1, z; (iv) x+1, y+1, z.

Funding Statement

This work was funded by National Science Foundation, Directorate for Mathematical and Physical Sciences grant CHE-1429086.