Reaction of (F3CP)4 and (F3CP)5 with ruthenium and osmium carbonyl clusters: characterisation and crystal structures of the products

Abstract

The reactions of tetrameric (F3CP)4 and pentameric (F3CP)5 with [Os3(CO)11(MeCN)] gave [(OC)11Os3(µ-PHCF3)Os3(CO)11(µ-H)1 while reaction with [Os3(µ-H)2(CO)10] led to the formation of [Os3(µ-H)(µ-PHCF3)(CO)10]2 and [(OC)9(µ-H)2Os3(µ4-F3CPPCF3)Os3(µ-H)2(CO)9]3. Pyrolysis of (F3CP)4 with [Os3(CO)12] at 209 °C resulted in cleavage of the triosmium parent cluster to afford [Os4(CO)13(µ3-PCF3)2]4. When the cyclophosphanes reacted with [Ru3(CO)12] in 1:1 and 1:2 molar ratio, [{Ru(CO)3(µ3-PCF3)}4]5 and [Ru5(CO)15(µ4-PCF3)]6 were obtained respectively. The complex [Ru4(CO)14(µ4-PCF3)]7 was obtained when the reaction between [Ru3(CO)12] and (F3CP)n(n= 4 or 5) was carried out at 80 °C. However, when [Ru4H(CO)12] was treated with the cyclophosphanes the novel molecule [Ru4(µ-H)2(CO)12(µ-PCF3)(µ-PCF3)2]8 was obtained. The crystal structures of 3–8 have been determined.