Synthesis and structural characterisation of lanthanide and actinide phosphaorganometallic complexes derived from the 3,5-di-tert-butyl-1,2,4-triphospholyl ring anion, P3C2But−2: Crystal and molecular structures of [M(η5-P3C2But2)2(η2-P3C2But2)] (M=Sc, Y, Tm, and U)
作者:Guy K.B. Clentsmith、F. Geoffrey N. Cloke、Matthew D. Francis、John R. Hanks、Peter B. Hitchcock、John F. Nixon
DOI:10.1016/j.jorganchem.2008.03.030
日期:2008.6
Treatment of MI3 ( M = Sc, Y, Tm, and U) with three equivalents of KP3C2Bu2t in refluxing toluene led to the corresponding monomeric, formally eight coordinate, complexes [M(eta(5)-P3C2Bu2t)(2)(eta(2)-P3C2Bu2t)] in moderate yields. In the solid state the complexes, which are all iso-structural, display an interesting assembly of ligands comprising of one eta(2)-(bent) and two eta(5)-ligated triphospholyl rings. NMR studies indicate that the complexes are fluxional in solution. (C) 2008 Elsevier B.V. All rights reserved.