Photochemistry of methanesulphinatopentacarbonylmanganese, Mn(CO) 5(SO 2CH 3), in frozen gas matrices at ca. 12 K

Abstract

Infrared spectroscopic evidence is presented which shows that photolysis of the S-sulphinato complex, Mn(CO) 5( S-SO 2CH 3), in argon, methane, dinitrogen and carbon monoxide matrices at ca. 12 K produces first the O-sulphinato complex, Mn(CO) 5( O-SO 2CH 3), which on further photolysis is converted into the O, O′-sulphinato complex, Mn(CO) 4( O, O′-SO 2CH 3) with ejection of a CO ligand. Annealing the matrices to ca. 35 K results in reversal of the O, O′-sulphinato complex to the parent S-sulphinato complex.