Dialkyltin(IV)bis(O–tolyl/benzyldithiocarbonate) complexes: Spectroscopic, thermogravemetric, antifungal and crystal analysis of n–Bu2Sn(S2COCH2C6H5)2

Abstract

Novel compounds of dimethyl– and dibutyltin(IV) with O–tolyl/benzyldithiocarbonates were successfully obtained by the reaction of Me₂SnCl₂ and n–Bu₂SnCl₂ with sodium salt of O–tolyl/benzyldithiocarbonates, [o–, m– and p–CH₃C₆H₄OCS₂Na and C₆H₅CH₂OCS₂Na], in 1:2 molar ratio in dry toluene. The structure of these newly synthesized complexes has been examined by elemental analysis, FT–IR, multinuclear NMR (¹H, ¹³C and ¹¹⁹Sn) spectroscopy. The thermal behaviour of the complex (8) has been studied by TGA/DTA analysis. The complex (8), n–Bu₂Sn(S₂COCH₂C₆H₅)₂, crystallizes in the monoclinic space group C2/c, in which tin adopts a distorted octahedron or skew trapezoidal bipyramidal geometry accompanied by two n–butyl chains and the two dithiocarbonate ligands coordinated in an anisobidentate fashion. Antifungal activities against fungus Fusarium sp. of these organotin(IV) derivatives exhibited enhanced activity compared to the free ligands.