Hydrothermal Synthesis and Crystal Structure of a One-dimensional Cobalt (II) Coordination Polymer with Two Organic Ligands

Abstract

A new Co(II) coordination polymer [Co(Hdpa)2(dpdo)(H2O)2] (1) (H2dpa=2,2`-biphenyldicarboxylic acid, dpdo=4,4`-bipyridine-N,N`-dioxide) has been synthesized and characterized by IR and UV=Vis spectroscopy, elemental analysis, and single-crystal X-ray structure analysis. The Co(II) atom has a distorted octahedral coordination environment with a set of oxygen donors from two Hdpa- ligands, two dpdo ligands and two coordinated water molecules. Adjacent cobalt centers are bridged by dpdo ligands thereby generating a chain. In the solid state, the chains further interact with each other and form a 3D supramolecular network via C-H···π interactions and multiform hydrogen bonds.