REACTION OF SULFUR DIOXIDE WITH HALOCARBONYLS OF RHODIUM AND IRIDIUM

摘要

The reactions of SO2 with halocarbonyl anions of rhodium and iridium, [M(CO)(2)X(2)](-) (M = Rh, Ir, X = Cl, Br, I), were studied. Addition of neutral ligands, Ph(3)E (E = P, As, Sb) or pyridine, to the SO2 treated halocarbonyl solution resulted in the formation of various complexes according to the nature of the precursor complex and the ligand. The obtained complexes are formulated as Rh(CO)(SO2)(Ph(3)As)(2)Cl, [Rh(py)(2)(SO2)Cl].2H(2)O, Rh(CO)(SO2)(Ph(3)P)(2)Br, Rh-2(CO)(2)(SO2)(Ph(3)Sb)(2)Br-2, Rh(py)(2)(SO2)(2)I(C2H5OH), Rh(SO2)(3)I(C2H5OH) and Rh-2(CO)(2)(SO2)(3)(Ph(3)Sb)(2)I-2, Ir(SO2)(2)Br(H2O)(2), [Ir(SO2)(4)(Ph(3)Sb)Br].6H(2)O, Ir(SO2)I(H2O)(2) and [Ir(SO2)(2)(Ph(3)As)I-3].4H(2)O. All complexes obtained have been characterized by physico-chemical methods [References: 26]