A. Navaza, F. Villain, P. Charpin
1984
Citations
1
Influential Citations
45
Citations
Journal
Polyhedron
Abstract
Abstract The structures of dicyclohexyl-(18-crown-6) uranyl perchlorate, [(C20H36O6)UO2] (ClO4)2 (complex I) and of dicyclohexyl-(18-crown-6) uranyl hydroxyperchlorate [C20H36O6]3 [(UO2)2(H2O)6] · (ClO4)2, CH3CN, (complex II) have been determined from three dimension X-ray diffraction data. The uranyl group is directly coordinated to the oxygen atoms of the polyether ring in complex I; its hydrolysis (complex II) leads to a dimerization of the uranyl ions by sharing two OH groups with an U-U distance of only 3.827(8) A. The polyether molecules are connected by hydrogen bonds with the dimeric ion [(UO2)2 (OH)2 (H2O)6]2+.