Hydrogen bonding and proton transfer involving the trihydride complexes Cp*M(dppe)H3 (M = Mo, W) and fluorinated alcohols: The competitive role of the hydride ligands and metal

J. Andrieu, N. V. Belkova, M. Besora, E. Collange, L. M. Epstein, A. Lledós, R. Poli, P. O. Revin, E. S. Shubina, E. V. Vorontsob

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15 Citations (Scopus)

Abstract

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, CF 3CH2OH, (CF3)2CHOH, and (CF 3)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.
Original languageEnglish
Pages (from-to)2679-2682
JournalRussian Chemical Bulletin
Volume52
Issue number12
DOIs
Publication statusPublished - 1 Dec 2003

Keywords

  • Hydrogen bonding
  • IR spectroscopy
  • Proton transfer
  • Transition metal polyhydrides
  • UV-Vis NMR spectroscopy

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