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EXAFS Spectroscopy of the Alkoxide Precursor Zr(OnBu)4 and its Modification in Solution

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Summary.

The molecular structure of the transition metal alkoxide Zr(OnBu)4 in toluene and its modification by addition of i-propanol, tetrahydrofurane, and the coordinating ligand pentane-1,3-dione (Hacac) were investigated by extended X-ray absorption fine structure (EXAFS) and X-ray absorption near edge structure (XANES) spectroscopy. Zr(OnBu)4 dissolved in toluene forms dimers. It was proved that cluster size is a function of the number of added equivalents ligand. In contrast, the addition of i-propanol or tetrahydrofurane caused no structural changes observable by EXAFS spectroscopy. A detailed discussion of the structural models is given in terms of possible alternatives and errors within the EXAFS analysis.

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Authors and Affiliations

  1. Institute of Physical Chemistry, University of Stuttgart, D-70569, Stuttgart, Germany

    Matthias Bauer, Christoph Gastl, Christoph Köppl & Helmut Bertagnolli

  2. Institute of Materials Chemistry, Technical University Vienna, A-1060, Wien, Austria

    Guido Kickelbick

Authors
  1. Matthias Bauer
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  2. Christoph Gastl
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  3. Christoph Köppl
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  4. Guido Kickelbick
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  5. Helmut Bertagnolli
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Correspondence to Matthias Bauer.

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Bauer, M., Gastl, C., Köppl, C. et al. EXAFS Spectroscopy of the Alkoxide Precursor Zr(OnBu)4 and its Modification in Solution. Monatsh. Chem. 137, 567–581 (2006). https://doi.org/10.1007/s00706-006-0450-z

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