Poly[bis(μ2-pyrazine-2-carboxylato)-κ3N1,O:O′;κ3N1,O:O-cadmium(II)

Abstract

In the structure of the title compound, [Cd(C5H3N2O2)2]n, the CdII ion is six-coordinated by two N atoms and four O atoms from three different pyrazine-2-carboxyl­ate ligands. One N atom and one O atom of the carboxyl­ate group in the ligand coordinate to the metal center, forming a five-membered chelate ring. The carboxyl­ate anion adopts two types of bridging modes, viz. μ2-O and syn–anti. Two CdII ions form a centrosymmetric dimer via a μ2-O bridge, and the dimers are linked through the syn–anti carboxyl­ate functional group, forming a two-dimensional polymeric structure extending along (100).