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Synthesis of Tris-(hexafluoroacetylacetonato)-Chromium (III)

Naturevolume 207pages631632 (1965) | Download Citation



REDUCTION of Cr(VI) in the presence of chelating ligands offers a promising approach to synthesis of Cr(III) chelates in high yield. This principle was used by Aikens and Reilley1 to devise a rapid chelometric method for determination of chromate. Reduction of chromate with bisulphite in a buffered solution of ethylenediaminetetraacetic acid (EDTA) gave quantitative formation of Cr(III)-EDTA. The quantitative yield of Cr(III) EDTA suggested that this might be the basis of a general method for synthesis of Cr(III) complexes. We have now applied this principle to synthesis of Cr(III) chelates of much lower stability as exemplified by tris-(hexafluoroacetyl-acetonato)-Cr(III).

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  1. 1

    Aikens, D. A., and Reilley, C. N., Anal. Chem., 34, 1707 (1962).

  2. 2

    Morris, M. L., Moshier, R. W., and Sievers, R. E., Inorg. Chem., 2, 411 (1963).

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  1. College of Chemistry and Physics, North Dakota State University, Fargo, North Dakota

    • M. L. MORRIS
  2. Department of Chemistry, Rensselaer Polytechnic Institute, Troy, New York

    • D. A. AIKENS


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