期刊
INORGANICA CHIMICA ACTA
卷 373, 期 1, 页码 187-194出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.ica.2011.04.016
关键词
4-Benzhydrylpiperazine-1-carbodithioate; Organotin(IV) complexes; Trigonal bipyramidal and square-pyramidal geometries; Molecular spectroscopy; Antimicrobial activity
资金
- Higher Education Commission of Pakistan and the NSERC (Canada)
A new series of organotin(IV) complexes with 4-benzhydrylpiperazine-1-carbodithioate (L) were synthesised by the metathesis reactions of the ligand-salt with triorganotin(IV) chlorides and diorganotin(IV) dichlorides in the appropriate molar ratio. All the complexes were characterized by elemental analysis, Raman, IR, and multinuclear NMR (H-1, C-13 and Sn-119) spectroscopy. Solid-state studies (Raman, IR and X-ray analysis) confirmed the bidentate coordination of the ligand in all cases. Multinuclear NMR spectroscopy suggested that some tri- and diorganotin complexes reduce their geometry by one unit in solution. The tau values, 0.6 and 0.24 for chlorodibutyl- and chlorodiethyltin(IV) derivatives, respectively, authenticated the trigonal bipyramidal geometry for the first complex and distorted square-pyramidal geometry for the latter. The low tau value for the chlorodiethyltin(IV) complex is attributed to the additional Sn center dot center dot center dot Cl and Sn center dot center dot center dot S intermolecular interactions. The antimicrobial results indicated the compounds are active biologically. (C) 2011 Elsevier B. V. All rights reserved.
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