The synthesis and spectroscopic characterization of novel organotin(IV) complexes, are described. The monomeric compound possesses trans octahedral, and the dimeric complex is of six-coordinated skew trapezoidal bipyramidal geometry. The triorganotin(IV) complexes are assigned a polymeric trigonal bipyramidal and a tetrahedral structure. The ED50 test showed toxicity to brine shrimp naupli and bio-activities tests of the compounds exhibited antibacterial, antifungal and excellent anti-tumour activities.