synthesized and characterized. In addition to the facile atomic inversions of the metal co-ordinated sulphur and selenium atoms, there are intramolecular 1,3-metallotropic shifts among all the available co-ordination sites on each ligand. From dynamic NMR studies activation energies have been determined for these metal commutations.
摘要单核络合物[M(CO)5(CH 3 E)n CH 4− n](n = 2,M = Cr和W,E = S和Se; n = 3,M = Cr和W,E = S; n = 4,M = Cr,E = S)已经合成并表征。除了
金属配位的
硫和
硒原子的易原子反转外,在每个
配体上所有可用的配位位点之间还存在分子内的1,3-
金属向位移。根据动态NMR研究,已经确定了这些
金属换向的活化能。