Synthesis and crystal structure of a cobalt(II) coordination polymer constructed from 2,6-pyridinedicarboxylate anion and 1,3-bis(4-pyridyl)propane nitrogen ligand

The coordination polymer named {[Co(H2O)4(BPP)][Co(dipic)2]·H2O}n (dipic = 2,6-pyridinedicarboxylate and BPP = 1,3-bis(4-pyridil)propane) has been synthesized and structurally characterized by single crystal X-ray diffraction analysis. This compound is constituted of an one-dimensional polymeric cationic chain, in which the BPP ligands connect the octahedral Co(II) sites, and an anionic moiety formed by another octahedral Co(II) center and two dipic2− anions. Hydrogen bonding interactions lead to a 3D supramolecular array.