Diaquabis(2,2′-biimidazole)cobalt(II) dichloride

Abstract

There are independent cations and four chloride anions in the crystal structure of the title complex, [Co(C6H6N4)2(H2O)2]Cl2. In each cation, the CoII cation is coordinated by four N atoms from two biimidazole and two O atoms of two water molecules; one Co atom is at a position of site symmetry m, the other at a position of site symmetry 2/m. All Cl− ions and water molecules are also located on the mirror plane. Each structural unit is connected through O—H...Cl and N—H...Cl intermolecular hydrogen bonds, forming a three–dimensional supramolecular structure.