Unprecedented Bidentate Coordination of the Uranyl Cation by the Chromate Anion in the Structure of [(CH3)2CHNH3]2[UO2(CrO4)2]

Authors

  • Oleg I. Siidra,

    1. Department of Crystallography, Faculty of Geology, St. Petersburg State University, University Emb. 7/9; 199034 St. Petersburg, Russian Federation, Fax: +7-812-3284418
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  • Evgeny V. Nazarchuk,

    1. Department of Crystallography, Faculty of Geology, St. Petersburg State University, University Emb. 7/9; 199034 St. Petersburg, Russian Federation, Fax: +7-812-3284418
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  • Sergey V. Krivovichev

    1. Department of Crystallography, Faculty of Geology, St. Petersburg State University, University Emb. 7/9; 199034 St. Petersburg, Russian Federation, Fax: +7-812-3284418
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Abstract

[(CH3)2CHNH3]2[UO2(CrO4)2] is the first uranyl chromate with a bidentate coordination mode between the uranyl and chromate ions. Although this type of coordination is typical for sulfates, it has not been previously observed for other group VI elements. Statistical analysis of the bidentate coordination geometry parameters in uranyl compounds is given.

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