SYNTHESIS AND CHARACTERIZATION OF URANYL THIOLATE COMPLEXES - CRYSTALAND MOLECULAR-STRUCTURES OF [ME4N][UO2(NO3)(2)(C5H4NS)] AND [C16H25N2S2SI2][UO2(NO3)(2)(C8H12NSSI)]

The preparations of two monomeric uranyl thiolate compounds are presen ted, [Me4N][UO2(NO3)(2)(C5H4NS)] (4) and [C16H25N2S2Si2][UO2(NO3)(2)(C 8H12NSSi)] (5) Crystal data: 4, C9H16N4O8SU, orthorhombic, P2(1)2(1)2( 1), a=8.553(2), b=13.921(2), c=14.895(2) Angstrom, V=1773.7(9) Angstro m(3), Z=4, 1356 reflections, R=0.0463. 5, C24H37N5O8S3Si3U, monoclinic , P2(1)/c, a=11.925(2), b=27.429(5), c=11.462(2) Angstrom, beta=97.33( 3)degrees, V=3718(2) Angstrom(3), Z=4, 1055 reflections, R=0.0518. The se are possible precursors to previously reported uranyl-peroxo and -o xo thiolate clusters. Attempts at oxo transfer from the clusters to su bstrates are also discussed. (C) 1998 Elsevier Science S.A.