Bis(3-aminopyrazine-2-carboxylato-κ2N1,O)diaquacobalt(II)

Abstract

In the title compound, [Co(C5H4N3O2)2(H2O)2], the CoIIatom is situated on a twofold rotation axis and isN,O-chelated by two 3-aminopyrazine-2-carboxylate anions and additionally bonded to the O atoms of two water molecules, leading to a slightly distorted octahedral coordination environment. The crystal packing is dominated by intermolecular O—H...O, O—H...N and N—H...O hydrogen bonding involving the water molecules and amino groups as donors and carboxylate O atoms, as well as the non-coordinating heterocyclic N atoms as acceptors, resulting in a three-dimensional network. An intramolecular N—H...O hydrogen bond is also observed.