Synthesis of mono- and bi-metallic dithiocarboxylate-alkyne complexes from sunlight driven insertion reaction and their antibacterial activity

Sunlight driven synthesis, characterization and antibacterial evaluation of cyclopentadienyl based metal-dithiocarboxylate alkyne complexes, [LM(CO)n(η2-S2C)Ctriple bond; length of mdashCR], [{L = η5-C5H5, M = W, R = (η5-C5H4)Fe(η5-C5H5), n = 2}; {L = η5-C5H5, M = W, R = –C(CH3)double bond; length as m-dashCH2, n = 2}; {L = η5-C5H5, M = Mo, R = –C(CH3)double bond; length as m-dashCH2, n = 2}; {L = η5-C5Me5, M = Fe, R = Ph, n = 1}] (5–8) have been carried out. Reactivity of metal-dithiocarboxylate alkyne complexes towards dicobaltoctacarbonyl were studied to obtain a trimetallic dithiocarboxylate complex (9–11). Structural characterizations of 7 and 8 have been carried out crystallographically and DFT calculation was performed on compound 8 to understand the electronic properties of the complex.