Bis[μ(2)-1-(2-carb­oxy­benzo­yl)thio­semi­carbazide(3−)]hexa­pyridine­trinickel(II) pyridine monosolvate monohydrate

The reaction of Ni(OAc)(2)·4H(2)O with 1-(2-carb­oxy­benzo­yl)thio­semicarbazide (H(3) L) produces the title complex, [Ni(3)(C(9)H(6)N(3)O(3)S)(2)(C(5)H(5)N)(6)]·C(5)H(5)N·2H(2)O, which contains an linear array of three Ni(II) atoms. The asymmetric unit contains half of the complex mol­ecule, a water mol­ecule and a half-mol­ecule of pyridine. The central Ni(II) atom, located on a crystallographic inversion centre, has an octa­hedral N(4)O(2) environment. The other two Ni(II) atoms have a square-pyramidal N(3)OS environment, each bridged to the central Ni(II) atom via the L (3−) group. The carboxyl­ate groups coordinate to the metal atoms in a monodentate fashion. The water mol­ecule is linked to the complex mol­ecule via O—H⋯O hydrogen bonds. The mol­ecules further assemble into a one-dimensional network parallel to [001] via inter­molecular N—H⋯O hydrogen bonds.