Abstract

Compounds of the general formula [Pt(?2-L) {P(O)Ph2}-{P(OH)Ph2}] where ?2-L = {?2-S2P(OEt)2}- (1) and {?2-S2CNEt2}- (2), react in THF solution with the dinuclear complex [{(cod)M(?-OMe)}2] (M = RhI or IrI) to give new heterodinuclear compounds of the type [(?2-L)Pt{?-P(O)Ph2}2M(cod)], where ?2-L = {?2-S2P-(OEt)2}- M = RhI (3), IrI (4) and ?2-L = {?2-S2C-NEt2}-; M = RhI (5) and IrI (6). Compounds (3) and (4) react with an excess of CO, leading to displacement of the coordinated ?-diolefin (cod) and the formation of the dicarbonyl derivatives [{ß?2-82Ñ(ÏÅß)2}Ñß{ì- Ñ(Ï)-Ph2}2M(CO)2] [M = RhI (7), IrI (8)]. All products were characterized by carbon and hydrogen microanalysis and by i.r. and n.m.r. spectroscopy {1and 31P(1H)}.