Tetraaquadiazidocobalt(II) 3,3′-dicarboxylato-1,1′-ethylenedipyridinium

Abstract

The asymmetric unit of the title compound, [Co(N3)2(H2O)4]·C14H12N2O4, comprises half of the cobalt(II) complex molecule and a half of the 3,3′-dicarboxylato-1,1′-ethylenedipyridinium molecule. The CoII atom is located on an inversion centre and hence the complex molecule adopts a centrosymmetric trans-octahedral geometry. The zwitterionic organic molecule is also centrosymmetric with the centre of the C—C bond of the ethylene moiety coinciding with an inversion centre. The adduct of metal complex and organic molecule is associated into a three-dimenional network through O—H...O hydrogen bonds.