Di-μ-chlorido-bis­{[N,N′-dicyclo­hexyl-N′′,N′′-bis­(trimethyl­sil­yl)guanidinato-κ² N,N′](tetra­hydro­furan-κO)magnesium(II)}

Abstract

The dinuclear title complex, [Mg₂(C₁₉H₄₀N₃Si₂)₂Cl₂(C₄H₈O)₂], lies on a center of inversion. The Mg²⁺ ions are bonded to a chelating N,N′-bonded guanidinate anion, a tetra­hydro­furan mol­ecule and two bridging chloride anions. The geometry of the resulting five-coordinated Mg²⁺ ion is a very distorted square-based pyramid with the O atom in the apical position.

Related literature

For the synthesis of analogous metal-ligated complexes, see: Sánchez-Barba et al. (2006 ▶); Doring & Kempe (2009 ▶); Lyubov et al. (2007 ▶). For a review of the crystal structures of guanidinato-ligated metal complexes, see: Bailey & Pace (2001 ▶).

Experimental

Crystal data

• [Mg₂(C₁₉H₄₀N₃Si₂)₂Cl₂(C₄H₈O)₂]

• M _r = 997.17

• Triclinic,

• a = 8.7249 (3) Å

• b = 11.0016 (5) Å

• c = 16.8893 (8) Å

• α = 79.487 (6)°

• β = 75.211 (6)°

• γ = 72.201 (5)°

• V = 1482.80 (11) ų

• Z = 1

• Mo Kα radiation

• μ = 0.25 mm⁻¹

• T = 223 K

• 0.60 × 0.30 × 0.22 mm

Data collection

• Rigaku Saturn diffractometer

• Absorption correction: multi-scan (REQAB; Jacobson, 1998 ▶) T _min = 0.340, T _max = 0.462

• 12201 measured reflections

• 5485 independent reflections

• 4175 reflections with I > 2σ(I)

• R _int = 0.028

Refinement

• R[F ² > 2σ(F ²)] = 0.050

• wR(F ²) = 0.141

• S = 1.08

• 5485 reflections

• 287 parameters

• 2 restraints

• H-atom parameters constrained

• Δρ_max = 0.40 e Å⁻³

• Δρ_min = −0.42 e Å⁻³

Data collection: CrystalClear (Rigaku, 2000 ▶); cell refinement: CrystalClear; data reduction: CrystalStructure (Rigaku, 2000 ▶); program(s) used to solve structure: SHELXS97 (Sheldrick, 2008 ▶); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008 ▶); molecular graphics: SHELXTL (Sheldrick, 2008 ▶); software used to prepare material for publication: SHELXTL.

Supplementary Material

Additional supplementary materials: crystallographic information; 3D view; checkCIF report

Table 1. Selected bond lengths (Å).

Mg1—O1	2.0334 (19)
Mg1—N2	2.0734 (18)
Mg1—N1	2.1247 (17)
Mg1—Cl1i	2.4946 (9)
Mg1—Cl1	2.4171 (9)

Symmetry code: (i) .

supplementary crystallographic information

Comment

The title compound exists as a centrosymmetric dinuclear molecule in which each Mg²⁺ is five-coordinated by one bidentate guanidinato anion in h²-fashion, two chlorido anions, and one THF molecule to adopt a distorted pyramidal geometry (Fig. 1). The two {Mg(guanidinato)(THF)}⁺ moieties are connected by two chlorido anions in m²-mode.

Experimental

The mono(guanidinato) yttrium dichloride complex was synthesized by the reaction of guanidinato lithium with one equivalent of YCl₃ in THF according to a literature procedure. Treatment of the mono(guanidinato) yttrium dichloride complex with Mg(C₃H₅)Cl in 1:2 molar ratio in THF at room temperature, after recrystallization, afforded the title complex as colorless crystals. Colourless prisms were obtained from a saturated hexane solution at 243 K.

Refinement

H-atoms were placed in calculated positions and were included in the refinement in the riding model approximation.

Figures

Fig. 1.

Molecular structure of the title compound with displacement elliposids drawn at the 30% probability level. Atoms with suffix A are generated by the symmetry operation (1–x, 1–y, 1–z).

Crystal data

[Mg2(C19H40N3Si2)2Cl2(C4H8O)2]	Z = 1
Mr = 997.17	F(000) = 544
Triclinic, P1	Dx = 1.117 Mg m−3
Hall symbol: -P 1	Mo Kα radiation, λ = 0.71075 Å
a = 8.7249 (3) Å	Cell parameters from 6219 reflections
b = 11.0016 (5) Å	θ = 3.0–27.5°
c = 16.8893 (8) Å	µ = 0.25 mm−1
α = 79.487 (6)°	T = 223 K
β = 75.211 (6)°	Prism, colourless
γ = 72.201 (5)°	0.60 × 0.30 × 0.22 mm
V = 1482.80 (11) Å3

Data collection

Rigaku Saturn diffractometer	5485 independent reflections
Radiation source: fine-focus sealed tube	4175 reflections with I > 2σ(I)
graphite	Rint = 0.028
Detector resolution: 14.63 pixels mm-1	θmax = 25.5°, θmin = 3.0°
ω scans	h = −10→10
Absorption correction: multi-scan (REQAB; Jacobson, 1998)	k = −13→11
Tmin = 0.340, Tmax = 0.462	l = −20→18
12201 measured reflections

Refinement

Refinement on F2	Primary atom site location: structure-invariant direct methods
Least-squares matrix: full	Secondary atom site location: difference Fourier map
R[F2 > 2σ(F2)] = 0.050	Hydrogen site location: inferred from neighbouring sites
wR(F2) = 0.141	H-atom parameters constrained
S = 1.08	w = 1/[σ2(Fo2) + (0.0855P)2] where P = (Fo2 + 2Fc2)/3
5485 reflections	(Δ/σ)max = 0.001
287 parameters	Δρmax = 0.40 e Å−3
2 restraints	Δρmin = −0.42 e Å−3

Special details

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

Refinement. Refinement of F2 against ALL reflections. The weighted R-factor wR and goodness of fit S are based on F2, conventional R-factors R are based on F, with F set to zero for negative F2. The threshold expression of F2 > σ(F2) is used only for calculating R-factors(gt) etc. and is not relevant to the choice of reflections for refinement. R-factors based on F2 are statistically about twice as large as those based on F, and R- factors based on ALL data will be even larger.

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

	x	y	z	Uiso*/Ueq
Cl1	0.57869 (8)	0.59193 (6)	0.53865 (3)	0.0538 (2)
Si1	0.19612 (8)	0.27490 (6)	0.89356 (3)	0.04007 (19)
Si2	0.57738 (8)	0.19428 (7)	0.83044 (4)	0.0486 (2)
Mg1	0.37458 (9)	0.47603 (7)	0.60061 (4)	0.0372 (2)
O1	0.1567 (2)	0.6051 (2)	0.58704 (11)	0.0670 (6)
N1	0.3601 (2)	0.47652 (18)	0.72806 (10)	0.0400 (4)
N2	0.3613 (2)	0.30543 (17)	0.67452 (10)	0.0350 (4)
N3	0.3771 (2)	0.27627 (17)	0.81889 (9)	0.0319 (4)
C1	0.3639 (2)	0.3536 (2)	0.74099 (11)	0.0308 (4)
C2	0.3718 (3)	0.5451 (2)	0.79118 (13)	0.0489 (6)
H2	0.3730	0.4863	0.8431	0.059*
C3	0.2249 (4)	0.6613 (3)	0.80647 (19)	0.0698 (8)
H3A	0.1235	0.6336	0.8224	0.084*
H3B	0.2207	0.7198	0.7553	0.084*
C4	0.2330 (5)	0.7332 (4)	0.8742 (2)	0.0911 (12)
H4A	0.1395	0.8102	0.8800	0.109*
H4B	0.2250	0.6780	0.9268	0.109*
C5	0.3926 (5)	0.7717 (3)	0.85416 (16)	0.0771 (10)
H5A	0.3921	0.8377	0.8065	0.093*
H5B	0.4000	0.8090	0.9011	0.093*
C6	0.5393 (5)	0.6602 (4)	0.8355 (2)	0.0837 (10)
H6A	0.5498	0.6008	0.8859	0.100*
H6B	0.6385	0.6907	0.8174	0.100*
C7	0.5280 (4)	0.5886 (3)	0.76892 (18)	0.0670 (8)
H7A	0.5304	0.6449	0.7167	0.080*
H7B	0.6238	0.5135	0.7611	0.080*
C8	0.3507 (2)	0.1751 (2)	0.67767 (12)	0.0345 (5)
H8	0.3583	0.1305	0.7336	0.041*
C9	0.4891 (3)	0.0989 (2)	0.61505 (13)	0.0410 (5)
H9A	0.4838	0.1429	0.5595	0.049*
H9B	0.5956	0.0953	0.6258	0.049*
C10	0.4761 (3)	−0.0373 (2)	0.61940 (14)	0.0461 (6)
H10A	0.5638	−0.0821	0.5769	0.055*
H10B	0.4926	−0.0838	0.6732	0.055*
C11	0.3108 (3)	−0.0390 (2)	0.60709 (15)	0.0490 (6)
H11A	0.3020	−0.0058	0.5500	0.059*
H11B	0.3031	−0.1277	0.6167	0.059*
C12	0.1706 (3)	0.0416 (3)	0.66506 (18)	0.0599 (7)
H12A	0.1683	−0.0004	0.7216	0.072*
H12B	0.0662	0.0469	0.6512	0.072*
C13	0.1866 (3)	0.1767 (3)	0.66063 (18)	0.0534 (6)
H13A	0.0963	0.2239	0.7011	0.064*
H13B	0.1770	0.2220	0.6057	0.064*
C14	0.0156 (3)	0.3832 (3)	0.85500 (17)	0.0582 (7)
H14A	0.0309	0.4687	0.8390	0.087*
H14B	−0.0829	0.3867	0.8981	0.087*
H14C	0.0040	0.3510	0.8077	0.087*
C15	0.1996 (4)	0.3282 (4)	0.99136 (16)	0.0809 (10)
H15A	0.2800	0.2636	1.0181	0.121*
H15B	0.0915	0.3401	1.0276	0.121*
H15C	0.2293	0.4088	0.9794	0.121*
C16	0.1665 (4)	0.1109 (3)	0.9186 (2)	0.0867 (11)
H16A	0.1686	0.0788	0.8684	0.130*
H16B	0.0612	0.1141	0.9563	0.130*
H16C	0.2543	0.0543	0.9442	0.130*
C17	0.7269 (3)	0.2293 (3)	0.73586 (18)	0.0684 (8)
H17A	0.7127	0.1940	0.6905	0.103*
H17B	0.8381	0.1907	0.7446	0.103*
H17C	0.7085	0.3215	0.7229	0.103*
C18	0.6256 (4)	0.2438 (5)	0.9186 (2)	0.1038 (14)
H18A	0.6050	0.3364	0.9120	0.156*
H18B	0.7405	0.2035	0.9203	0.156*
H18C	0.5564	0.2172	0.9696	0.156*
C19	0.6096 (5)	0.0173 (4)	0.8484 (4)	0.129 (2)
H19A	0.5437	−0.0052	0.9016	0.193*
H19B	0.7251	−0.0249	0.8477	0.193*
H19C	0.5770	−0.0103	0.8054	0.193*
C20	0.0019 (4)	0.6055 (4)	0.6432 (2)	0.0992 (13)
H20A	0.0158	0.5861	0.7004	0.119*
H20B	−0.0449	0.5418	0.6317	0.119*
C21	−0.1037 (6)	0.7348 (6)	0.6292 (4)	0.172 (3)
H21A	−0.2109	0.7309	0.6234	0.206*
H21B	−0.1217	0.7818	0.6763	0.206*
C22	−0.0259 (5)	0.8007 (4)	0.5551 (3)	0.1056 (13)
H22A	−0.0022	0.8755	0.5680	0.127*
H22B	−0.0981	0.8299	0.5155	0.127*
C23	0.1279 (4)	0.7076 (4)	0.5207 (2)	0.0896 (11)
H23A	0.1160	0.6748	0.4731	0.108*
H23B	0.2192	0.7475	0.5035	0.108*

Atomic displacement parameters (Ų)

	U11	U22	U33	U12	U13	U23
Cl1	0.0806 (4)	0.0615 (4)	0.0290 (3)	−0.0396 (4)	−0.0038 (3)	−0.0054 (2)
Si1	0.0467 (4)	0.0415 (4)	0.0285 (3)	−0.0158 (3)	0.0035 (2)	−0.0051 (2)
Si2	0.0422 (4)	0.0536 (5)	0.0536 (4)	−0.0178 (3)	−0.0203 (3)	0.0075 (3)
Mg1	0.0451 (4)	0.0361 (4)	0.0264 (3)	−0.0095 (3)	−0.0043 (3)	−0.0013 (3)
O1	0.0567 (11)	0.0719 (14)	0.0464 (10)	0.0067 (10)	−0.0073 (8)	0.0108 (9)
N1	0.0589 (11)	0.0359 (11)	0.0257 (8)	−0.0166 (9)	−0.0045 (8)	−0.0043 (7)
N2	0.0435 (9)	0.0367 (11)	0.0259 (8)	−0.0128 (8)	−0.0048 (7)	−0.0068 (7)
N3	0.0367 (9)	0.0354 (10)	0.0248 (8)	−0.0143 (8)	−0.0046 (7)	−0.0015 (7)
C1	0.0288 (9)	0.0373 (13)	0.0249 (9)	−0.0097 (9)	−0.0020 (7)	−0.0041 (8)
C2	0.0848 (17)	0.0400 (14)	0.0270 (10)	−0.0288 (13)	−0.0077 (11)	−0.0023 (9)
C3	0.0805 (19)	0.060 (2)	0.0731 (18)	−0.0304 (16)	0.0093 (15)	−0.0344 (15)
C4	0.138 (3)	0.071 (2)	0.0680 (19)	−0.051 (2)	0.019 (2)	−0.0372 (17)
C5	0.149 (3)	0.059 (2)	0.0388 (13)	−0.057 (2)	−0.0124 (17)	−0.0067 (13)
C6	0.122 (3)	0.088 (3)	0.0692 (19)	−0.054 (2)	−0.0325 (19)	−0.0161 (18)
C7	0.0733 (18)	0.076 (2)	0.0661 (17)	−0.0309 (16)	−0.0113 (14)	−0.0298 (15)
C8	0.0399 (11)	0.0360 (13)	0.0280 (10)	−0.0122 (10)	−0.0033 (8)	−0.0067 (8)
C9	0.0394 (11)	0.0417 (14)	0.0380 (11)	−0.0068 (10)	−0.0025 (9)	−0.0104 (10)
C10	0.0527 (13)	0.0371 (14)	0.0386 (12)	−0.0003 (11)	−0.0034 (10)	−0.0091 (10)
C11	0.0583 (14)	0.0389 (14)	0.0511 (13)	−0.0129 (12)	−0.0058 (11)	−0.0177 (11)
C12	0.0471 (13)	0.0624 (19)	0.0775 (18)	−0.0236 (13)	0.0025 (13)	−0.0336 (14)
C13	0.0388 (12)	0.0507 (16)	0.0746 (17)	−0.0090 (11)	−0.0037 (12)	−0.0340 (13)
C14	0.0399 (12)	0.071 (2)	0.0605 (15)	−0.0193 (13)	0.0009 (11)	−0.0078 (13)
C15	0.0731 (19)	0.133 (3)	0.0381 (14)	−0.033 (2)	0.0053 (13)	−0.0294 (17)
C16	0.095 (2)	0.054 (2)	0.086 (2)	−0.0323 (17)	0.0359 (19)	−0.0026 (16)
C17	0.0346 (12)	0.091 (2)	0.0725 (18)	−0.0094 (14)	−0.0023 (12)	−0.0195 (16)
C18	0.0684 (19)	0.196 (5)	0.0614 (19)	−0.042 (2)	−0.0300 (16)	−0.017 (2)
C19	0.080 (2)	0.058 (2)	0.253 (6)	−0.0194 (19)	−0.087 (3)	0.045 (3)
C20	0.0543 (18)	0.118 (3)	0.092 (2)	−0.0068 (19)	−0.0064 (17)	0.028 (2)
C21	0.092 (3)	0.161 (5)	0.151 (5)	0.055 (3)	0.015 (3)	0.044 (4)
C22	0.095 (3)	0.083 (3)	0.117 (3)	0.011 (2)	−0.042 (2)	0.010 (2)
C23	0.090 (2)	0.087 (3)	0.067 (2)	−0.001 (2)	−0.0260 (17)	0.0263 (18)

Geometric parameters (Å, °)

Si1—N3	1.7532 (16)	C9—H9A	0.9800
Si1—C14	1.849 (3)	C9—H9B	0.9800
Si1—C16	1.857 (3)	C10—C11	1.515 (3)
Si1—C15	1.861 (3)	C10—H10A	0.9800
Si2—N3	1.7472 (18)	C10—H10B	0.9800
Si2—C17	1.850 (3)	C11—C12	1.511 (3)
Si2—C18	1.857 (3)	C11—H11A	0.9800
Si2—C19	1.858 (4)	C11—H11B	0.9800
Mg1—O1	2.0334 (19)	C12—C13	1.523 (4)
Mg1—N2	2.0734 (18)	C12—H12A	0.9800
Mg1—N1	2.1247 (17)	C12—H12B	0.9800
Mg1—Cl1i	2.4946 (9)	C13—H13A	0.9800
Mg1—Cl1	2.4171 (9)	C13—H13B	0.9800
Mg1—Mg1i	3.5878 (13)	C14—H14A	0.9700
O1—C20	1.439 (4)	C14—H14B	0.9700
O1—C23	1.449 (3)	C14—H14C	0.9700
N1—C1	1.321 (3)	C15—H15A	0.9700
N1—C2	1.453 (3)	C15—H15B	0.9700
N2—C1	1.334 (3)	C15—H15C	0.9700
N2—C8	1.455 (3)	C16—H16A	0.9700
N3—C1	1.441 (2)	C16—H16B	0.9700
C2—C3	1.515 (4)	C16—H16C	0.9700
C2—C7	1.516 (4)	C17—H17A	0.9700
C2—H2	0.9900	C17—H17B	0.9700
C3—C4	1.531 (4)	C17—H17C	0.9700
C3—H3A	0.9800	C18—H18A	0.9700
C3—H3B	0.9800	C18—H18B	0.9700
C4—C5	1.517 (5)	C18—H18C	0.9700
C4—H4A	0.9800	C19—H19A	0.9700
C4—H4B	0.9800	C19—H19B	0.9700
C5—C6	1.489 (5)	C19—H19C	0.9700
C5—H5A	0.9800	C20—C21	1.455 (6)
C5—H5B	0.9800	C20—H20A	0.9800
C6—C7	1.524 (4)	C20—H20B	0.9800
C6—H6A	0.9800	C21—C22	1.445 (6)
C6—H6B	0.9800	C21—H21A	0.9800
C7—H7A	0.9800	C21—H21B	0.9800
C7—H7B	0.9800	C22—C23	1.471 (5)
C8—C13	1.525 (3)	C22—H22A	0.9800
C8—C9	1.527 (3)	C22—H22B	0.9800
C8—H8	0.9900	C23—H23A	0.9800
C9—C10	1.525 (3)	C23—H23B	0.9800
Mg1—Cl1—Mg1i	93.84 (3)	C13—C8—H8	108.6
N3—Si1—C14	110.04 (10)	C9—C8—H8	108.6
N3—Si1—C16	111.06 (12)	C10—C9—C8	111.38 (17)
C14—Si1—C16	108.07 (16)	C10—C9—H9A	109.4
N3—Si1—C15	111.90 (11)	C8—C9—H9A	109.4
C14—Si1—C15	108.22 (15)	C10—C9—H9B	109.4
C16—Si1—C15	107.41 (18)	C8—C9—H9B	109.4
N3—Si2—C17	109.83 (11)	H9A—C9—H9B	108.0
N3—Si2—C18	111.12 (14)	C11—C10—C9	112.2 (2)
C17—Si2—C18	108.39 (16)	C11—C10—H10A	109.2
N3—Si2—C19	112.06 (12)	C9—C10—H10A	109.2
C17—Si2—C19	107.5 (2)	C11—C10—H10B	109.2
C18—Si2—C19	107.8 (2)	C9—C10—H10B	109.2
O1—Mg1—N2	116.59 (8)	H10A—C10—H10B	107.9
O1—Mg1—N1	100.44 (8)	C12—C11—C10	111.19 (19)
N2—Mg1—N1	64.10 (7)	C12—C11—H11A	109.4
O1—Mg1—Cl1	104.41 (7)	C10—C11—H11A	109.4
N2—Mg1—Cl1	138.03 (6)	C12—C11—H11B	109.4
N1—Mg1—Cl1	101.29 (6)	C10—C11—H11B	109.4
O1—Mg1—Cl1i	91.66 (6)	H11A—C11—H11B	108.0
N2—Mg1—Cl1i	100.61 (5)	C11—C12—C13	112.2 (2)
N1—Mg1—Cl1i	163.61 (6)	C11—C12—H12A	109.2
Cl1—Mg1—Cl1i	86.16 (3)	C13—C12—H12A	109.2
O1—Mg1—C1	113.31 (7)	C11—C12—H12B	109.2
N2—Mg1—C1	32.25 (7)	C13—C12—H12B	109.2
N1—Mg1—C1	31.92 (7)	H12A—C12—H12B	107.9
Cl1—Mg1—C1	122.25 (5)	C12—C13—C8	111.8 (2)
Cl1i—Mg1—C1	132.33 (6)	C12—C13—H13A	109.3
O1—Mg1—Mg1i	100.82 (6)	C8—C13—H13A	109.3
N2—Mg1—Mg1i	128.97 (6)	C12—C13—H13B	109.3
N1—Mg1—Mg1i	143.03 (6)	C8—C13—H13B	109.3
Cl1—Mg1—Mg1i	43.93 (2)	H13A—C13—H13B	107.9
Cl1i—Mg1—Mg1i	42.236 (19)	Si1—C14—H14A	109.5
C1—Mg1—Mg1i	145.86 (6)	Si1—C14—H14B	109.5
C20—O1—C23	108.6 (2)	H14A—C14—H14B	109.5
C20—O1—Mg1	123.90 (18)	Si1—C14—H14C	109.5
C23—O1—Mg1	127.48 (18)	H14A—C14—H14C	109.5
C1—N1—C2	122.68 (17)	H14B—C14—H14C	109.5
C1—N1—Mg1	89.82 (12)	Si1—C15—H15A	109.5
C2—N1—Mg1	146.53 (14)	Si1—C15—H15B	109.5
C1—N2—C8	122.48 (17)	H15A—C15—H15B	109.5
C1—N2—Mg1	91.70 (13)	Si1—C15—H15C	109.5
C8—N2—Mg1	145.82 (13)	H15A—C15—H15C	109.5
C1—N3—Si2	115.52 (12)	H15B—C15—H15C	109.5
C1—N3—Si1	118.56 (13)	Si1—C16—H16A	109.5
Si2—N3—Si1	125.91 (10)	Si1—C16—H16B	109.5
N1—C1—N2	114.12 (17)	H16A—C16—H16B	109.5
N1—C1—N3	123.27 (17)	Si1—C16—H16C	109.5
N2—C1—N3	122.56 (18)	H16A—C16—H16C	109.5
N1—C1—Mg1	58.25 (10)	H16B—C16—H16C	109.5
N2—C1—Mg1	56.05 (10)	Si2—C17—H17A	109.5
N3—C1—Mg1	173.59 (14)	Si2—C17—H17B	109.5
N1—C2—C3	111.2 (2)	H17A—C17—H17B	109.5
N1—C2—C7	112.17 (19)	Si2—C17—H17C	109.5
C3—C2—C7	108.8 (2)	H17A—C17—H17C	109.5
N1—C2—H2	108.2	H17B—C17—H17C	109.5
C3—C2—H2	108.2	Si2—C18—H18A	109.5
C7—C2—H2	108.2	Si2—C18—H18B	109.5
C2—C3—C4	112.0 (3)	H18A—C18—H18B	109.5
C2—C3—H3A	109.2	Si2—C18—H18C	109.5
C4—C3—H3A	109.2	H18A—C18—H18C	109.5
C2—C3—H3B	109.2	H18B—C18—H18C	109.5
C4—C3—H3B	109.2	Si2—C19—H19A	109.5
H3A—C3—H3B	107.9	Si2—C19—H19B	109.5
C5—C4—C3	111.0 (2)	H19A—C19—H19B	109.5
C5—C4—H4A	109.4	Si2—C19—H19C	109.5
C3—C4—H4A	109.4	H19A—C19—H19C	109.5
C5—C4—H4B	109.4	H19B—C19—H19C	109.5
C3—C4—H4B	109.4	O1—C20—C21	105.0 (3)
H4A—C4—H4B	108.0	O1—C20—H20A	110.7
C6—C5—C4	111.9 (3)	C21—C20—H20A	110.7
C6—C5—H5A	109.2	O1—C20—H20B	110.7
C4—C5—H5A	109.2	C21—C20—H20B	110.7
C6—C5—H5B	109.2	H20A—C20—H20B	108.8
C4—C5—H5B	109.2	C22—C21—C20	109.2 (3)
H5A—C5—H5B	107.9	C22—C21—H21A	109.8
C5—C6—C7	112.3 (3)	C20—C21—H21A	109.8
C5—C6—H6A	109.1	C22—C21—H21B	109.8
C7—C6—H6A	109.1	C20—C21—H21B	109.8
C5—C6—H6B	109.1	H21A—C21—H21B	108.3
C7—C6—H6B	109.1	C21—C22—C23	106.6 (3)
H6A—C6—H6B	107.9	C21—C22—H22A	110.4
C2—C7—C6	111.8 (2)	C23—C22—H22A	110.4
C2—C7—H7A	109.3	C21—C22—H22B	110.4
C6—C7—H7A	109.3	C23—C22—H22B	110.4
C2—C7—H7B	109.3	H22A—C22—H22B	108.6
C6—C7—H7B	109.3	O1—C23—C22	105.1 (3)
H7A—C7—H7B	107.9	O1—C23—H23A	110.7
N2—C8—C13	110.59 (19)	C22—C23—H23A	110.7
N2—C8—C9	112.16 (16)	O1—C23—H23B	110.7
C13—C8—C9	108.22 (17)	C22—C23—H23B	110.7
N2—C8—H8	108.6	H23A—C23—H23B	108.8
Mg1i—Cl1—Mg1—O1	−90.73 (7)	Mg1—N2—C1—N1	4.89 (18)
Mg1i—Cl1—Mg1—N2	101.63 (9)	C8—N2—C1—N3	7.9 (3)
Mg1i—Cl1—Mg1—N1	165.26 (7)	Mg1—N2—C1—N3	−172.51 (15)
Mg1i—Cl1—Mg1—Cl1i	0.0	C8—N2—C1—Mg1	−179.6 (2)
Mg1i—Cl1—Mg1—C1	139.09 (7)	Si2—N3—C1—N1	−91.9 (2)
N2—Mg1—O1—C20	20.7 (3)	Si1—N3—C1—N1	86.6 (2)
N1—Mg1—O1—C20	−45.5 (3)	Si2—N3—C1—N2	85.2 (2)
Cl1—Mg1—O1—C20	−150.1 (3)	Si1—N3—C1—N2	−96.2 (2)
Cl1i—Mg1—O1—C20	123.4 (3)	Si2—N3—C1—Mg1	9.8 (13)
C1—Mg1—O1—C20	−14.8 (3)	Si1—N3—C1—Mg1	−171.7 (12)
Mg1i—Mg1—O1—C20	165.0 (3)	O1—Mg1—C1—N1	−71.43 (15)
N2—Mg1—O1—C23	−157.5 (3)	N2—Mg1—C1—N1	−174.75 (19)
N1—Mg1—O1—C23	136.3 (3)	Cl1—Mg1—C1—N1	54.89 (14)
Cl1—Mg1—O1—C23	31.7 (3)	Cl1i—Mg1—C1—N1	172.78 (11)
Cl1i—Mg1—O1—C23	−54.8 (3)	Mg1i—Mg1—C1—N1	108.96 (15)
C1—Mg1—O1—C23	167.0 (3)	O1—Mg1—C1—N2	103.33 (14)
Mg1i—Mg1—O1—C23	−13.3 (3)	N1—Mg1—C1—N2	174.75 (19)
O1—Mg1—N1—C1	117.72 (13)	Cl1—Mg1—C1—N2	−130.35 (11)
N2—Mg1—N1—C1	3.11 (11)	Cl1i—Mg1—C1—N2	−12.46 (14)
Cl1—Mg1—N1—C1	−135.13 (12)	Mg1i—Mg1—C1—N2	−76.29 (15)
Cl1i—Mg1—N1—C1	−19.2 (3)	O1—Mg1—C1—N3	−177.1 (12)
Mg1i—Mg1—N1—C1	−118.06 (13)	N2—Mg1—C1—N3	79.5 (13)
O1—Mg1—N1—C2	−75.3 (3)	N1—Mg1—C1—N3	−105.7 (13)
N2—Mg1—N1—C2	170.1 (3)	Cl1—Mg1—C1—N3	−50.8 (13)
Cl1—Mg1—N1—C2	31.8 (3)	Cl1i—Mg1—C1—N3	67.1 (13)
Cl1i—Mg1—N1—C2	147.7 (3)	Mg1i—Mg1—C1—N3	3.3 (13)
C1—Mg1—N1—C2	167.0 (4)	C1—N1—C2—C3	−123.4 (2)
Mg1i—Mg1—N1—C2	48.9 (3)	Mg1—N1—C2—C3	72.2 (3)
O1—Mg1—N2—C1	−92.06 (13)	C1—N1—C2—C7	114.6 (2)
N1—Mg1—N2—C1	−3.08 (11)	Mg1—N1—C2—C7	−49.9 (4)
Cl1—Mg1—N2—C1	74.54 (14)	N1—C2—C3—C4	178.7 (2)
Cl1i—Mg1—N2—C1	170.66 (11)	C7—C2—C3—C4	−57.3 (3)
Mg1i—Mg1—N2—C1	135.47 (11)	C2—C3—C4—C5	55.8 (4)
O1—Mg1—N2—C8	87.3 (3)	C3—C4—C5—C6	−52.8 (4)
N1—Mg1—N2—C8	176.3 (3)	C4—C5—C6—C7	53.0 (4)
Cl1—Mg1—N2—C8	−106.1 (2)	N1—C2—C7—C6	−179.9 (3)
Cl1i—Mg1—N2—C8	−10.0 (3)	C3—C2—C7—C6	56.7 (3)
C1—Mg1—N2—C8	179.4 (3)	C5—C6—C7—C2	−55.7 (4)
Mg1i—Mg1—N2—C8	−45.1 (3)	C1—N2—C8—C13	113.1 (2)
C17—Si2—N3—C1	−0.02 (19)	Mg1—N2—C8—C13	−66.2 (3)
C18—Si2—N3—C1	119.9 (2)	C1—N2—C8—C9	−126.0 (2)
C19—Si2—N3—C1	−119.5 (2)	Mg1—N2—C8—C9	54.7 (3)
C17—Si2—N3—Si1	−178.41 (14)	N2—C8—C9—C10	179.88 (18)
C18—Si2—N3—Si1	−58.5 (2)	C13—C8—C9—C10	−57.9 (2)
C19—Si2—N3—Si1	62.1 (2)	C8—C9—C10—C11	56.5 (2)
C14—Si1—N3—C1	−1.54 (18)	C9—C10—C11—C12	−52.5 (3)
C16—Si1—N3—C1	118.1 (2)	C10—C11—C12—C13	52.2 (3)
C15—Si1—N3—C1	−121.89 (19)	C11—C12—C13—C8	−56.2 (3)
C14—Si1—N3—Si2	176.82 (13)	N2—C8—C13—C12	−178.95 (19)
C16—Si1—N3—Si2	−63.56 (19)	C9—C8—C13—C12	57.8 (3)
C15—Si1—N3—Si2	56.46 (19)	C23—O1—C20—C21	−22.1 (5)
C2—N1—C1—N2	−176.27 (19)	Mg1—O1—C20—C21	159.4 (4)
Mg1—N1—C1—N2	−4.77 (17)	O1—C20—C21—C22	11.9 (7)
C2—N1—C1—N3	1.1 (3)	C20—C21—C22—C23	2.5 (7)
Mg1—N1—C1—N3	172.61 (16)	C20—O1—C23—C22	23.7 (4)
C2—N1—C1—Mg1	−171.5 (2)	Mg1—O1—C23—C22	−157.8 (3)
C8—N2—C1—N1	−174.70 (18)	C21—C22—C23—O1	−15.7 (6)

Symmetry codes: (i) −x+1, −y+1, −z+1.