CRYSTAL STRUCTURE OF A HYDROXO-BRIDGED DIMERIC URANYL COMPLEX WITH A 2,2':6',2"-TERPYRIDINE LIGAND
K. Lyczko, L. Steczek
Institute of Nuclear Chemistry and Technology, Warsaw, Poland
Keywords: uranyl complex, terpyridine, hydroxide bridge, crystal structure
Abstract
A new dimeric compound [{UO2(μ-OH)(terpy)}2](ClO4)2×0.67CH3CN, containing an uranyl cation and a tridentate 2,2':6',2"-terpyridine (terpy) ligand, is synthesized from an acetonitrile solution of uranyl perchlorate and terpy. The crystal structure of the compound is determined by single crystal X-ray diffraction. The crystal structure shows the formation of symmetric and asymmetric cationic hydroxo-bridged uranyl dimers. The uranium atoms adopt a distorted pentagonal bipyramidal configuration with a UO4N3 coordination environment formed by two uranyl O atoms, three N atoms from the terpy ligand, and two O atoms from the hydroxide anions.
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