ChemInform Abstract: Synthesis and Characterization of Uranyl Chromate Sheet Compounds Containing Edge‐Sharing Dimers of Uranyl Pentagonal Bipyramids.

Abstract

Synthesis and Characterization of Uranyl Chromate Sheet Compounds Containing Edge-Sharing Dimers of Uranyl Pentagonal Bipyramids. -Eight uranyl chromate compounds are synthesized and characterized by single crystal XRD. The uranyl chromates (V), (VII), (X), (XI), and (XIV) crystallize in the monoclinic space group P21/c, (III) crystallizes in the orthorhombic space group Cmcm, (XIII) in the monoclinic space group P2 1 /n, and (XVI) in the orthorhombic space group P2 1 2 1 2 1 . The structural units of the compounds are sheets of uranyl pentagonal bipyramids and [Cr VI O4] 2tetrahedra. The uranyl pentagonal bipyramids share an equitorial edge, resulting in a dimer that is linked into the sheet through corner-sharing with CrO4 tetrahedra. -(UNRUH, D. K.; BARANAY, M.; PRESSPRICH, L.; STOFFER, M.; BURNS*, P. C.; J. Solid State Chem. 186 (2012) 158-164, http://dx.