Date Published: July 01, 2011
Publisher: International Union of Crystallography
Author(s): Md. Abu Affan, Norrihan B. Sam, Fasihuddin B. Ahmad, Fraser White, Edward R. T. Tiekink.
Two independent diphenyltin molecules and two independent methanol molecules comprise the asymmetric unit of the title compound, [Sn(C6H5)2(C17H14N2O3)]·CH3OH. The Sn atom in each is five-coordinated by a tridentate ligand and the ipso-C atoms of the Sn-bound benzene substituents. The resulting C2N2O donor set defines a coordination geometry that is intermediate between trigonal-bipyramidal (TP) and square-pyramidal (SP), with one molecule slightly tending towards TP and the other slightly towards SP. The molecules differ in terms of the relative orientations of the terminal benzene rings [dihedral angles = 45.71 (18) and 53.98 (17)°] and of the Sn-bound benzene substituents [dihedral angles = 59.5 (2) and 45.77 (18)°, respectively]. The most prominent feature of the crystal packing is the formation of four-molecule aggregates via O—H⋯O and O—H⋯N hydrogen bonds, in which the hydroxy group is connected to a methanol molecule which, in turn, is linked to a non-coordinating N atom. Weak C—H⋯π interactions also occur.
For background to the biological interest in related compounds, see: Affan et al. (2010 ▶). For related structures, see: Affan et al. (2009 ▶, 2011 ▶). For additional structural analysis, see: Addison et al. (1984 ▶).