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- W2000408099 abstract "The reactions of both Os3(CO)10(NCCH3)2 and Os3(CO)11(NCCH3) with HD or with a mixture of H2/D2 in chloroform solution at room temperature afford a mixture of H2Os3(CO)10 (Ia), HDOs3(CO)10 (Ib), and D2Os3(CO)10 (Ic). The three isotopomers are also obtained by reacting H2Os3(CO)10 with D2. By measurement of the rates of disappearance of Ia in the latter reaction at four different temperatures, the thermodynamic parameters have been estimated (Ea = 43.7 kJ/mol, ΔH⧧ = 41.2 kJ/mol, ΔS⧧ = −0.17 kJ/(mol K)). No H/D isotopic exchange has been observed after heating Ia and Ic in toluene for several hours. A mechanism involving the reversible oxidative addition and reductive elimination of molecular hydrogen on H2Os3(CO)10 via the formation of a fluxional tetra(hydrido, deuterio) intermediate is proposed." @default.
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- W2000408099 date "1996-11-12" @default.
- W2000408099 modified "2023-10-16" @default.
- W2000408099 title "H/D Isotopic Exchange on the Surface of a Triosmium Carbonyl Cluster" @default.
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- W2000408099 doi "https://doi.org/10.1021/om960527d" @default.
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