Date Published: May 01, 2012
Publisher: International Union of Crystallography
Author(s): Amna Qasem Ali, Naser Eltaher Eltayeb, Siang Guan Teoh, Abdussalam Salhin, Hoong-Kun Fun.
The asymmetric unit of the title compound, [Ni(C15H11N4OS)2]·C3H7NO, contains one NiII complex molecule and one disordered dimethylformamide solvent molecule. The NiII ion is six-coordinated in a distorted octahedral geometry by two N, two O and two S atoms. An intramolecular C—H⋯S hydrogen bond generates an S(6) ring motif. In the crystal, molecules are linked through intermolecular N—H⋯S, N—H⋯O, C—H⋯N, C—H⋯O and C—H⋯S hydrogen bonds into infinite two-dimensional network parallel to the ab plane. The structure is further stablized by weak C—H⋯π interactions. The dimethylformamide solvent molecule is disordered over two sets of sites in a 0.514 (15):0.486 (15) ratio.
For related structures, see: Qasem Ali et al. (2011a ▶,b ▶, 2012a ▶,b ▶); Ali et al. (2012 ▶). For the biological activity of Schiff bases, see: Bhandari et al. (2008 ▶); Bhardwaj et al. (2010 ▶); Pandeya et al. (1999 ▶); Sridhar et al. (2002 ▶); Suryavanshi & Pai (2006 ▶). For the cytotoxic and anticancer activity of isatin and its derivatives, see: Vine et al. (2009 ▶). For graph-set analysis, see: Bernstein et al. (1995 ▶). For bond-length data, see: Allen et al. (1987 ▶).