A reaction similar to that above using [Os3(CO)10- (NCMe)2] (40 mg, 0.043 mmol) and PhP(Cy)2 (24 mg, 0.086 mmol) for 3 h followed by similar chromatographic separation afforded 1,2-[Os3(CO)10{PhP(Cy)2}2] (4), 1,2,3-[Os3(CO)9{PhP(Cy)2}3] (7) and 1,2...