Date Published: September 01, 2012
Publisher: International Union of Crystallography
Author(s): Fernanda Rosi Soares Pederzolli, Leandro Bresolin, Johannes Beck, Jörg Daniels, Adriano Bof de Oliveira.
The reaction of 5-bromosalicylaldehyde thiosemicarbazone with nickel acetate tetrahydrate and pyridine yielded the title compound, [Ni(C8H6BrN3OS)(C5H5N)]. The NiII 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.
For the synthesis of 5-bromosalicylaldehyde thiosemicarbazones and for the antibacterial activity of their complexes, see: Joseph et al. (2010 ▶). For the crystal structure of 5-bromosalicylaldehyde thiosemicarbazone, see: Kargar et al. (2010 ▶). For the crystal structure of an NiII complex with a similar coordination environment, see: Güveli et al. (2009 ▶). For the coordination chemistry of thiosemicarbazone derivatives, see: Lobana et al. (2009 ▶).