Abstract
This article describes the synthesis of four new homobimetallic organotin(IV) complexes: [Et2Sn]2L (1), [Bu2Sn]2L (2), [Oct2Sn]2L (3) and [BuClSn]2L (4) (H4L = N1′,N6′-bis(5-bromo-2-hydroxybenzylidene)adipodihydrazide) and their structural elucidation by means of elemental analysis, mass spectroscopy, FT-IR, NMR (1H, 13C, 119Sn) and single crystal X-ray analysis. Spectroscopic studies indicate coordination of hexadentate ligand to the diorganotin(IV) moieties via ONO–ONO donor sites and pentacoordinated tin centers. Single crystal X-ray analysis of (1) and (2) revealed homobimetallic nature of complexes with each Sn atom in a distorted square pyramidal coordination geometry. Packing diagrams suggest the seminal role of Sn⋯N and Br⋯π interactions in generating supramolecular assembly. The synthesized compounds were screened for their antimicrobial activity and cytotoxicity. Compound (2) exhibit highest activity against several pathogenic microbes.
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