Actinide coordination chemistry - a unique example of a homoleptic complex of nine-coordinate thorium(IV)

摘要

The dimethylsulfoxide (dmso) solvate of Th(IV) perchlorate is readily obtained from acidic aqueous Th(IV) solutions and has a formulation established from a single crystal structure determination of [Th(dmso-O)(9)](ClO4)(4).4dmso; triclinic, P1, a = 12.4811(8) Angstrom, b = 12.4879(8) Angstrom, c = 23.969(2) Angstrom, alpha = 94.684(1)degrees, beta = 95.823(1)degrees, gamma = 119.347(1)degrees. The primary coordination sphere of the Th is of tricapped trigonal prismatic form, with the symmetry of the [Th(dmso-O)(9)] entity being close to C-3h. (C) 2004 Elsevier B.V. All rights reserved.