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(C9H 12N4O3)2](NO3) 2·2H2O, consists of a discrete cationic [Co(PLSC)2]2+ complex unit [PLSC is 4-(2- carbamoylhydrazin-1-yl-idene)-5-hydroxy-methyl-2-methyl-pyridinium-3-ol-ato], two NO3- and two water mol-ecules. The two tridentate PLSC ligands of the cation are zwitterions related to each other by a non-crystallographic C 2 axis. The CoII ion is in a disorted octa-hedral 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.