New approach to sulfonated diphosphine complexes:synthesis and amphoteric behaviour of zwitterionic [Mn~+(CO_4{(PPh_2)_2C(H)SO_3~-}]

摘要

Oxidation of the thioketone residue in the complex [Mn(CO)_4{(PPh_2)_2C=S}]~+ (2) with hydrogen peroxide affords the sulfonate derivative [Mn(CO)_4{(PPh_2)_2C(H)SO_3}] (3),which shows amphoteric behaviour in reversible acid-base processes,and is easily chlorinated to give [Mn(CO)_4{(PPh_2)_2C(Cl)SO_3}] (8).