title: Bis[4-(2-carbamoylhydrazin-1-yl-idene-κN,O)-5-hydroxy-methyl-2-methyl-pyridinium-3-olato-κO]cobalt(II) dinitrate dihydrate.
abstract: The asymmetric unit of the title compound, [Co(C(9)H(12)N(4)O(3))(2)](NO(3))(2)·2H(2)O, 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 NO(3) (-) 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 Co(II) ion is in a disorted octa-hedral coordination environment. The crystal structure is composed of alternating NO(3)/H(2)O and complex layers supported by extensive C-H⋯O, N-H⋯O and N-H⋯N hydrogen bonding.
authors.forename: Dragoslav
authors.initials: D
authors.lastname: Vidovic
authors.forename: Violeta
authors.initials: V
authors.lastname: Jevtovic