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Oxoalkoxides—True precursors of complex oxides

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Abstract

X-ray structural analysis of “crystalline alkoxides” in many cases reveals that along with OR-groups their molecules also contain oxo-ligands. The following possible reactions leading to formation of oxoalkoxides have been discussed: hydrolysis, pyrolysis (frequently uncontrollable), ether elimination, oxidation of OR-groups (which exist in solutions of alkali, alkaline-earth and rare earth elements), or alkoxides of the lower oxidation states (which are formed by reduction of M(OR) n on cathode during electrolysis or by hydrogen in statu nascendi). Oligomeric oxoalkoxides differ from the polymeric alkoxides M(OR) n in considerably higher solubility and reactivity. The most important role of oxoalkoxides in the processes of formation of oxides has been demonstrated using as an example preparation of BaTiO3 from alkoxides.

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Authors and Affiliations

  1. Chemical Department, Moscow State University, Vorob'evy Hills, 117234, Moscow, Russia

    N. YA. Turova, E. P. Turevskaya & V. G. Kessler

  2. L.Ya. Karpov, Institute of Physical Chemistry, Obukha St., 10, 103064, Moscow, Russia

    M. I. Yanovskaya

Authors
  1. N. YA. Turova
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  2. E. P. Turevskaya
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  3. V. G. Kessler
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  4. M. I. Yanovskaya
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Turova, N.Y., Turevskaya, E.P., Kessler, V.G. et al. Oxoalkoxides—True precursors of complex oxides. J Sol-Gel Sci Technol 2, 17–23 (1994). https://doi.org/10.1007/BF00486207

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