Monocyclooctatetraenyl(thiolato)samarium(III) complexes from the reaction of metallic samarium with cyclooctatetraene and diaryldisulfide: crystal structures of [Sm(µ-SPh)(C8H8)(thf)2]2 and [{Sm[µ-S(2,4,6-triisopropylphenyl)(C8H8)(thf)}2]

Abstract

Metallic samarium reacts directly with Cyclooctatetraene in the presence of diaryldisulfide to give cyclooctatetraenyl(thiolato)samarium(III) complexes, {Sm(µ-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-C₆H₂, n= 1), the structures of which are confirmed by single crystal X-ray analyses of 1 and 3, while Yb reacts with diphenyldisulfide in thf to afford [Yb(SPh)₂(thf)]_n.