catena-Poly[[[tetra­aqua­nickel(II)]-μ-4,4′-bipyridyl-κ2 N:N′] 3,3′-(p-phenyl­ene)diacrylate]

Ni-Ya Li

doi:10.1107/S1600536811036993

. 2011 Sep 17;67(Pt 10):m1397. doi: 10.1107/S1600536811036993

catena-Poly[[[tetraaquanickel(II)]-μ-4,4′-bipyridyl-κ² N:N′] 3,3′-(p-phenylene)diacrylate]

Ni-Ya Li ^a,^*

PMCID: PMC3201244 PMID: 22064763

Abstract

In the title compound, {[Ni(C₁₀H₈N₂)(H₂O)₄](C₁₂H₈O₄)}_n, the Ni^II, 4,4′-bipyridyl (bipy) and 3,3′-(p-phenylene)diacrylate (L ²⁻) moieties are situated on inversion centres. The bipy ligands bridge Ni^II ions into positively charged polymeric chains along [101]. The Ni^II atom is coordinated by two N atoms from two bipy ligands and four water molecules in a distorted octahedral geometry. L ²⁻ anions interact with the polymeric chains via O–H⋯O hydrogen bonds, forming a three-dimensional supramolecular network.

Related literature

For a metal-organic complex with bipy and L ²⁻ ligands, see: Huang et al. (2008 ▶). For related Ni complexes, see: Batten & Harris (2001 ▶); Dong (2009 ▶); Li et al. (2010 ▶).

Experimental

Crystal data

[Ni(C₁₀H₈N₂)(H₂O)₄](C₁₂H₈O₄)
M _r = 503.12
Triclinic,
a = 7.0867 (14) Å
b = 7.3614 (15) Å
c = 10.418 (2) Å
α = 95.51 (3)°
β = 102.51 (3)°
γ = 97.27 (3)°
V = 522.0 (2) Å³
Z = 1
Mo Kα radiation
μ = 0.98 mm⁻¹
T = 223 K
0.40 × 0.40 × 0.25 mm

Data collection

Rigaku Mercury CCD area-detector diffractometer
Absorption correction: multi-scan (REQAB; Jacobson, 1998 ▶) T _min = 0.694, T _max = 0.791
4910 measured reflections
1884 independent reflections
1807 reflections with I > 2σ(I)
R _int = 0.018

Refinement

R[F ² > 2σ(F ²)] = 0.026
wR(F ²) = 0.067
S = 1.07
1884 reflections
167 parameters
H atoms treated by a mixture of independent and constrained refinement
Δρ_max = 0.41 e Å⁻³
Δρ_min = −0.36 e Å⁻³

Data collection: CrystalClear (Rigaku, 2001 ▶); cell refinement: CrystalClear; data reduction: CrystalStructure (Rigaku/MSC, 2004 ▶); program(s) used to solve structure: SHELXTL (Sheldrick, 2008 ▶); program(s) used to refine structure: SHELXTL; molecular graphics: SHELXTL; software used to prepare material for publication: SHELXTL and PLATON (Spek, 2009 ▶).

Supplementary Material

Crystal structure: contains datablock(s) I, global. DOI: 10.1107/S1600536811036993/cv5150sup1.cif

e-67-m1397-sup1.cif^{(15.5KB, cif)}

Structure factors: contains datablock(s) I. DOI: 10.1107/S1600536811036993/cv5150Isup2.hkl

e-67-m1397-Isup2.hkl^{(92.7KB, hkl)}

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

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

D—H⋯A	D—H	H⋯A	D⋯A	D—H⋯A
O1—H2W⋯O3	0.84 (3)	1.90 (3)	2.734 (2)	170 (3)
O1—H1W⋯O3ⁱ	0.79 (3)	1.90 (3)	2.683 (2)	171 (3)
O2—H3W⋯O4ⁱⁱ	0.85 (3)	1.86 (3)	2.701 (2)	172 (3)
O2—H4W⋯O4ⁱⁱⁱ	0.82 (3)	1.95 (3)	2.754 (2)	167 (3)

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Symmetry codes: (i) Inline graphic ; (ii) ; (iii) .

Acknowledgments

This work was supported by the Research Start-Up Fund for New Staff of Huaibei Normal University.

supplementary crystallographic information

Comment

In recent years, supramolecular frameworks have attracted considerable attention because of their intriguing architectures and potential applications (Li et al., 2010). Polycarboxylates and dipyridyl ligands have proved to be good linkers for the construction of supramolecular compounds (Li et al., 2010). In this paper, we report the hydrothermal synthesis and structure of a supramolecular compound assembled by the mixed ligands of 4,4'-bipyridyl (bipy) and 3,3'-(1,4-phenylene)-diacrylate (L^2-), respectively.

The aymmetric unit of the title compound (I) (Fig. 1) contains half of a [Ni(H₂O)₄(bipy)] unit, half of a L^2- anion (L^2- = 3,3'-(1,4-phenylene)-diacrylate) and two water molecules. Each Ni center has a distorted octahedral environment being coordinated by four water molecules at the basal positions and two N atoms from two different bipy ligand at the apical position. The Ni–O and Ni–N bond lengths are comparable with those in reported Ni-complexes (Batten & Harris, 2001; Dong, 2009; Li et al., 2010). The Ni centers are bridged by bipy ligands to form one-dimensional [Ni(H₂O)₄(bipy)]_n polymeric chain (Fig. 2). The adjacent chains are further interconnected by the L^2- ligands via intermolecular O—H···O hydrogen bonds (Table 1) to form a three-dimensional supramolecular framework (Fig. 3).

Experimental

10 mL Pyrex glass tube was loaded by NiCl₂.6H₂O (24 mg, 0.1 mmol), 3,3'-(1,4-phenylene)-diacrylic acid (22 mg, 0.1 mmol), 4,4'-bipyridyl (16 mg, 0.1 mmol), and 3 ml of H₂O. The tube was sealed and heated in an oven to 170°C for 3 d, and then cooled to ambient temperature at the rate of 5°C h^-1 to form blue crystals.