Bis[4-(2-carbamoylhydrazin-1-ylidene-κ2N1,O)-5-hydroxymethyl-2-methylpyridinium-3-olato-κO3]cobalt(II) dinitrate dihydrate

Abstract

The asymmetric unit of the title compound, [Co(C9H12N4O3)2](NO3)2·2H2O, consists of a discrete cationic [Co(PLSC)2]2+ complex unit [PLSC is 4-(2-carbamoylhydrazin-1-ylidene)-5-hydroxymethyl-2-methylpyridinium-3-olato], two NO3− and two water molecules. The two tridentate PLSC ligands of the cation are zwitterions related to each other by a non-crystallographic C2 axis. The CoII ion is in a disorted octahedral coordination environment. The crystal structure is composed of alternating NO3/H2O and complex layers supported by extensive C—H...O, N—H...O and N—H...N hydrogen bonding.