n -Butyldichlorido(2-{(1 E )-1-[2-(pyridin-2-yl)hydrazin-1-ylidene]ethyl}phenolato)tin(IV)

• Published in: Acta crystallographica. Section E, Structure reports online Structure reports online, 2010-11, Vol.66 (11), p.m1412-m1413
• Main Authors: Affan, Md. Abu, Chee, Dayang N. A., Ahmad, Fasihuddin B., Ng, Seik Weng, Tiekink, Edward R. T.
• Format: Article
• Language: English
• ISSN: 1600-5368; 1600-5368
• DOI: 10.1107/S1600536810040572

Two independent molecules comprise the asymmetric unit of the title compound, [Sn(C4H9)(C13H12N3O)Cl2]. The Sn atom in each is coordinated by the tridentate ligand via the phenoxide O, hydrazine N and pyridyl N atoms, forming five- and six-membered chelate rings. The approximately octahedral coordination geometry is completed by the α-C atom of the n-butyl group (which is trans to the hydrazine N atom) and two mutually trans Cl atoms. Differences between the molecules are evident in the relative planarity of the chelate rings and in the conformations of the n-butyl groups [C—C—C—C = 177.2 (5) and −64.4 (11)°]. Significant differences in the Sn—Cl bond lengths are related to the formation of N—H...Cl hydrogen bonds, which link the molecules comprising the asymmetric unit into dimeric aggregates. These are consolidated in the crystal packing by C—H...Cl contacts. The structure was refined as an inversion twin; the minor twin component is 37 (3)%.