MONOCYCLOOCTATETRAENYL(THIOLATO)SAMARIUM(III) COMPLEXES FROM THE REACTION OF METALLIC SAMARIUM WITH CYCLOOCTATETRAENE AND DIARYLDISULFIDE -CRYSTAL-STRUCTURES OF [SM(MU-SPH)(C8H8)(THF)2]2 AND [(SM[MU-S(2,4,6-TRIISOPROPYLPHENYL)](C8H8)(THF))2]

Metallic samarium reacts directly with cyclooctatetraene in the presen ce of diaryldisulfide to give cyclooctatetraenyl(thiolato)samarium(III ) complexes, [Sm(mu-SAr)(C8H8)(thf)n]2 (thf = tetrahydrofuran) (1, Ar = C6H5, n = 2; 2, Ar = 2,4,6-Me3-C6H2, n = 2; 3, Ar = 2,4,6-(Pri)3-C6H 2, n = 1), the structures of which are confirmed by single crystal X-r ay analyses of 1 and 3, while Yb reacts with diphenyldisulfide in thf to afford [Yb(SPh)2(thf)]n.