Research Article: {4-Hy­droxy-N′-[(2E,3Z)-4-oxido-4-phenyl­but-3-en-2-yl­idene]benzo­hydra­zidato}diphenyl­tin(IV) methanol monosolvate

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.

Partial Text

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 ▶).




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