Dimethylsuphoxide and its roles in the coordination chemistry of the uranyl ion

摘要

Structure determinations for the dimethylsulphoxide (DMSO) solvates of uranyl triflate,nitrate,picrate and a tetranuclear basic acetate show DMSO to be bound in all cases as an O-donor ligand but with the sulphur atoms involved in a variety of close approaches which may be significant in determining details of the complex ion structures.These close approaches,which generally mean that S may be considered to have '3+2' coordination,usually involve O of an adjacent DMSO or oxyanion ligand,but can also involve uranyl-0 and can be both intra-and inter-molecular.