Catena-Poly[[diaquabis(formato-κO)cobalt(II)]-μ2-2,6-bis(pyridin-4-yl)-4,4′-bipyridine-κ2N2:N6

De-Yun Ma,Guo-Qing Li,De-En Sun

doi:10.1107/s1600536811021118

Abstract

In the title complex, [Co(CHO2)2(C20H14N4)(H2O)2]n, the CoII ion, lying on an inversion center, is six-coordinated by two O atoms from two monodentate formate ligands, two N atoms from two 2,6-bis(pyridin-4-yl)-4,4′-bipyridine (4-pybpy) ligands and two water molecules, displaying an octahedral geometry. The 4-pybpy ligand, having a twofold rotation axis, functions in a bridging coordination mode, connecting the CoII ions into a corrugated chain along [01]. The chains are further linked into a three-dimensional supramolecular network by O—H⋯O, C—H⋯N and C—H⋯O hydrogen bonds and π–π stacking interactions between the pyridine rings [centroid-to-centroid distance = 3.743 (2) Å].

Highlights

The chains are further linked into a three-dimensional supramolecular network by O—H O, C—H N and C—H O hydrogen bonds and – stacking interactions between the pyridine rings [centroid-to-centroid distance = 3.743 (2) Å]
H atoms treated by a mixture of independent and constrained refinement max = 0.76 e Å3
Supplementary data and figures for this paper are available from the

Summary

Introduction

Monoclinic, C2=c a = 24.412 (5) Å Received 19 April 2011; accepted 1 June 2011 Key indicators: single-crystal X-ray study; T = 293 K; mean (C–C) = 0.005 Å; R factor = 0.044; wR factor = 0.112; data-to-parameter ratio = 14.4.

Results

Conclusion