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

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.

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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 ▶).




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