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- W2076065645 abstract "Reactions of CF3EH2 (E = P or As) with [Ru3(CO)12] under various conditions resulted in the elimination of two hydrogen atoms to afford new trifluoromethyl-phosphinidene and -arsinidene capped ruthenium carbonyl clusters: [Ru3(CO)9(µ-H)2(µ3-PCF3)] 1, [Ru4(CO)13(µ-H)2(µ4-PCF3)] 2, [Ru4(CO)12(µ-H)2(µ3-PCF3)2] 3, [Ru5(CO)15(µ-H)2(µ3-PCF3)3] 4, [Ru5(CO)15(µ4-PCF3)] 5, [Ru4(CO)12(µ-H)2(µ3-AsCF3)2] 6, [Ru4(CO)13(µ-H)2(µ4-AsCF3)] 7, [Ru4(CO)13(µ3-AsCF3)2] 8 and [Ru5(CO)15(µ-H)2(µ3-AsCF3)3] 9. The structures 2 and 7 contain spiked ruthenium frameworks with a phosphinidene or arsinidene group co-ordinated to all four metal atoms. The molecular structures of 4 and 9 have been shown to contain two-metal and three-metal fragments joined together by three µ3-phosphinidene (or arsinidene) units. The hydrides in 2 and 7 display similar fluxional behaviour yielding the same values of ΔG ‡ (= 49 kJ mol–1). The transformation from 1 to 5, probably via intermediate 2, occurs with increase in nuclearity by the treatment of 1 with [Ru3(CO)12]. Pathways for the formation of cluster 3 from 2, 9 from [Ru4(CO)12(µ-H)2(µ3-AsCF3)2(µ-AsCF3)] 10, and also 6 from 8 by hydrogenation are discussed." @default.
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- W2076065645 title "Reactions of trifluoromethyl-phosphine and -arsine with a ruthenium carbonyl cluster: synthesis, characterization and reactivity of cluster derivatives capped by trifluoromethyl-phosphinidene and -arsinidene moieties" @default.
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- W2076065645 doi "https://doi.org/10.1039/a902598g" @default.
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