[1-(5-Bromo-2-oxidobenzyl­idene)thio­semicarbazidato-κ³O,N¹,S](pyridine-κN)nickel(II)

The reaction of 5-bromo­salicyl­aldehyde thio­semicarbazone with nickel acetate tetra­hydrate and pyridine yielded the title compound, [Ni(C₈H₆BrN₃OS)(C₅H₅N)]. The Ni^II atom is four-coordinated in a square-planar environment by one deprotonated dianionic thio­semicarbazone ligand, acting in a tridentate chelating mode through N, O and S atoms forming two metalla-rings, and by one pyridine mol­ecule. The complex mol­ecules are linked into dimers by pairs of centrosym­metrical N—H...N inter­actions. In addition, mol­ecules are connected through inter­molecular Br...Br inter­actions [3.545 (1) Å], forming chains along the b-axis direction.