ABSTRACT
The reaction of 5-bromo-salicyl-aldehyde thio-semicarbazone with nickel acetate tetra-hydrate and pyridine yielded the title compound, [Ni(C(8)H(6)BrN(3)OS)(C(5)H(5)N)]. The Ni(II) atom is four-coordinated in a square-planar environment by one deprotonated dianionic thio-semicarbazone ligand, acting in a tridentate chelating mode through N, O and S atoms forming two metalla-rings, and by one pyridine mol-ecule. The complex mol-ecules are linked into dimers by pairs of centrosym-metrical N-Hâ¯N inter-actions. In addition, mol-ecules are connected through inter-molecular Brâ¯Br inter-actions [3.545â (1)â Å], forming chains along the b-axis direction.
ABSTRACT
In the crystal structure of the title compound, C(9)H(7)BrN(4)OS·C(2)H(3)N, the mol-ecules are connected via N-Hâ¯O and N-Hâ¯S inter-actions into zigzag chains perpendicular to [001]. The mol-ecules in these chains are additionally linked to acetonitrile solvent mol-ecules through N-Hâ¯N hydrogen bonding. The mol-ecules are arranged in layers and are stacked in the direction of the c axis indicative of π-π inter-actions, with distance = 3.381â (7)â Å for the Câ¯C interaction parallel to [001]. An intra-molecular N-Hâ¯O hydrogen bond is also observed in the main mol-ecule.
