Hydrogen bonding and proton transfer involving the trihydride complexes Cp*M(dppe)H 3 (M = Mo, W) and fluorinated alcohols: the competitive role of the hydride ligands and metal - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Russian Chemical Bulletin Année : 2003

Hydrogen bonding and proton transfer involving the trihydride complexes Cp*M(dppe)H 3 (M = Mo, W) and fluorinated alcohols: the competitive role of the hydride ligands and metal

Résumé

The protonation of complexes Cp*M(dppe)H3 (dppe is ethylenebis(diphenylphosphine), M = Mo (1), W (2)) by a variety of fluorinated alcohols of different acid strength (FCH2CH2OH, CF3CH2OH, (CF3)2CHOH, and (CF3)3COH) was investigated experimentally by the variable temperature spectroscopic methods (IR, NMR) and stopped-flow technique (UV-Vis). The structures of the hydrogen-bonded and proton transfer products were studied by DFT calculations. In agreement with the calculation results, the IR data suggest that the initial hydrogen bond is established with a hydride site for complex 1 and with the metal site for complex 2. However, no intermediate dihydrogen complex found theoretically was detected experimentally on the way to the final classical tetrahydride product.
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Dates et versions

hal-03280838 , version 1 (19-07-2021)

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J. Andrieu, N. Belkova, M. Besora, E. Collange, L. Epstein, et al.. Hydrogen bonding and proton transfer involving the trihydride complexes Cp*M(dppe)H 3 (M = Mo, W) and fluorinated alcohols: the competitive role of the hydride ligands and metal. Russian Chemical Bulletin, 2003, 52 (12), pp.2679-2682. ⟨10.1023/B:RUCB.0000019886.18334.55⟩. ⟨hal-03280838⟩
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