Reactions of iron (III) chloride and dipotassium salts of O-alky or O-aryl trithiophosphates have been carried out in 1:3 molar ratio to form Fe[SSK(S)POR]3 and where (R= Me, Et, Pri , Bui , Ph, CH2Ph), respectively. These compounds have been synthesized by using solvent free microwave assisted procedure and conventional method also. Microwave assisted procedure have certain benefits over conventional methods like energy consumption is minimum, product yield is high and minimum use of solvent. The newly synthesized complexes have been characterised by IR, NMR ( 1 H, 13C, 31P), molecular wieght measurement and elemental analysis (C, H, S). With the help of Physico-chemical spectroscopic studies it is found that compounds show octahedral geometry and monomeric in nature. Newly synthesized compounds also show antibacterial activity against gram positive and gram negative bacteria. The antibacterial activity has carried out by paper disk method. A comparative study of antibacterial effect has also been made with standard drugs like Imipenem and Linezolid.
