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- W1976172021 abstract "The chemisorption of [Ma3(CO)1 2] on silica (M = Ru and Os) and alumina (M = Os) has been studied by vibrational and X-ray absorption spectroscopies making close comparisons with model compounds. The results indicate that the first chemisorption species observed has the form [M3H(CO)10(O---O)]; the bridging hydride was observed directly for the silica systems as evidenced by the M-H-M bending vibration in the i.r. Also consistent with this structure are the EXAFS analysis of the Ru/SiOz material. This indicated an essentially equilateral ruthenium triangle and coordination to oxygen. The published low frequency Raman data on the Os/Al2Oa product was shown to match most closely with that of model compounds with a bidentate oxygen donor ligand (acac or O2CR). The tethered cluster [Os3H2(CO)9(PPh2C2H4SIL)] was found to be a relatively short lived species on a silica surface. Under ambient conditions it reacts further and the i.r., EXAFS and 31P NMR data of this species suggest that the two osmium atoms not coordinated to the tethering phosphine become involved with a bidentate site from the surface." @default.
- W1976172021 created "2016-06-24" @default.
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- W1976172021 date "1987-01-01" @default.
- W1976172021 modified "2023-10-11" @default.
- W1976172021 title "Characterization of oxide supported metal carbonyl clusters" @default.
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- W1976172021 doi "https://doi.org/10.1016/s0584-8539(87)80040-5" @default.
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