Biologically potent organotin(IV) complexes of 2-maleimidoacetic acid

The in vitro LD50, anti-bacterial, anti-fungal and anti-yeast bio-tests are carried out, which proved them to be powerful biocides. The in vitro anti-tumour and analgesic activities also displayed excellent potential of the title compounds. Series of organotin(IV) complexes are synthesized and characterized. Based on spectroscopic analysis and literature evidences, the compound 1 is tetrahedral and 2 distorted octahedral or trigonal bipyramidal in nature wherein the compounds 3 and 4 are tetrahedral in solid and polymeric trigonal bipyramidal geometry in solution. Beside to 1H, 13C and 119Sn NMR, the FT-IR is successfully applied to verify the bonding mode of endo and exo status of tin(IV) of compound 2.