Eight coordinate 1,2-bis(dimethylarsino) and 1,2-bis(dimethylphosphino)-benzene complexes of uranium tetrachloride, UCl4[(1,2-Me2E)2C6H4]2 where E is As or P
作者:Sergio S. Rozenel、Peter G. Edwards、Mark A. Petrie、Richard A. Andersen
DOI:10.1016/j.poly.2016.04.024
日期:2016.9
uranium crystallize in the tetragonal crystal system in space group I 4 ¯ 2m, in which the geometry is a D2d-dodecahedron. In solution the uranium complexes do not exchange with added free ligand on the NMR time scale but they undergo bidentate ligand exchange on the chemical time scale. The 31P1H} NMRchemical shifts of UI4(diphos)2 and UX4(dmpe)2, X = Cl, Br, I range from 1500 to 2100 ppm and are strongly