[1,2-Bis(pyridin-2-ylmeth­oxy)benzene-κ4 N,O,O′,N′]bis­(nitrato-κO)cobalt(II)

Nan-Nan Huang; Ying-Hui Yu; Ying Liu; Guang-Feng Hou; Jin-Sheng Gao

doi:10.1107/S1600536811013328

. 2011 Apr 16;67(Pt 5):m598. doi: 10.1107/S1600536811013328

[1,2-Bis(pyridin-2-ylmethoxy)benzene-κ⁴ N,O,O′,N′]bis(nitrato-κO)cobalt(II)

Nan-Nan Huang ^a, Ying-Hui Yu ^b, Ying Liu ^b, Guang-Feng Hou ^c, Jin-Sheng Gao ^b,^c,^*

PMCID: PMC3089074 PMID: 21754318

Abstract

In the title compound, [Co(NO₃)₂(C₁₈H₁₆N₂O₂)], the Co^II ion is six-coordinated in a distorted octahedral environment defined by two O and two N atoms from the ligand and by two O atoms from two nitrate anions. A two-dimensional network parallel to the ab plane is built up by C—H⋯O hydrogen bonds, which link adjacent molecules in the crystal structure.

Related literature

For the synthesis and general backround to flexible pyridyl-based ligands, see: Liu et al. (2010a ▶,b ▶). For a related structure, see: Yu et al. (2010 ▶).

Experimental

Crystal data

[Co(NO₃)₂(C₁₈H₁₆N₂O₂)]
M _r = 475.28
Triclinic,
a = 8.6281 (17) Å
b = 10.701 (2) Å
c = 10.921 (2) Å
α = 78.77 (3)°
β = 79.04 (3)°
γ = 78.55 (3)°
V = 957.2 (3) Å³
Z = 2
Mo Kα radiation
μ = 0.95 mm⁻¹
T = 291 K
0.24 × 0.21 × 0.19 mm

Data collection

Rigaku R-AXIS RAPID diffractometer
Absorption correction: multi-scan (ABSCOR; Higashi, 1995 ▶) T _min = 0.803, T _max = 0.840
9403 measured reflections
4317 independent reflections
2942 reflections with I > 2σ(I)
R _int = 0.033

Refinement

R[F ² > 2σ(F ²)] = 0.044
wR(F ²) = 0.098
S = 1.04
4317 reflections
280 parameters
H-atom parameters constrained
Δρ_max = 0.30 e Å⁻³
Δρ_min = −0.44 e Å⁻³

Data collection: RAPID-AUTO (Rigaku, 1998 ▶); cell refinement: RAPID-AUTO; data reduction: CrystalStructure (Rigaku/MSC, 2002 ▶); 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: SHELXL97.

Supplementary Material

Crystal structure: contains datablocks I, global. DOI: 10.1107/S1600536811013328/ng5146sup1.cif

e-67-0m598-sup1.cif^{(19.6KB, cif)}

Structure factors: contains datablocks I. DOI: 10.1107/S1600536811013328/ng5146Isup2.hkl

e-67-0m598-Isup2.hkl^{(211.5KB, 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
C6—H6A⋯O3ⁱ	0.97	2.46	3.241 (3)	138
C13—H13A⋯O6ⁱⁱ	0.97	2.42	3.296 (4)	150
C17—H17⋯O7ⁱⁱⁱ	0.93	2.58	3.469 (4)	160
C18—H18⋯O7	0.93	2.56	2.970 (4)	107

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

Acknowledgments

The authors thank the Special Funds for the Research of Scientific and Technological Innovative Talents of Harbin Municipal Science and Technology Bureau (2009RFXXG027), the Science and Technology Planning Project of Heilongjiang Province (GZ08A401) and Heilongjiang University for supporting this study.

supplementary crystallographic information

Comment

In recent, our group has employed the flexible N-heterocyclic ligands reacting with transition metal to construct several supramolecular architectures (Liu et al. 2010a, 2010b; Yu et al. 2010). As a part of our continuing work for bipyridyl aromatic ligands, we report the crystal structure of the title compound here.

1,2-Bis(pyridin-2-ylmethoxy)benzene molecule act as a chelating ligand to coordinate with Co^II ion forming a discrete structure. Two nitrate anions also coordinate to the center Co^II ion, resulting the Co^II ion is six-coordinated in a distorted octahedral environment (Figure 1).

A two-dimensional network, which parallel to ab plane, is built up by the C—H···O hydrogen bonds linking these isolated complexes (Figure 2, Tbale 1).

Experimental

The 1,2-Bis(pyridin-2-ylmethoxy)benzene was synthesized by the reaction of ο-dihydroxybenzene and 2-chloromethylpyridine hydrochloride under nitrogen atmosphere and alkaline condition (Liu et al., 2010a). Title ligand (0.58 g, 2 mmol) and Co(NO₃)₂^.H₂O (0.44 g, 2 mmol) were dissolved in 15 ml e thanol, and then the mixture keep stirring for 30 minute. The resulting solution was filtered, and the filtrate was allowed to stand in a desiccator at room temperature for several days. Red block crystals were obtained.