Study of reactions of some halides, cyclopentadienyl dichlorides, and bis(cyclopentadienyl) chlorides of lanthanides with trans-stilbene adducts with alkali metals [PhCHCHPh].-M+ (M = Li, Na)

Article abstract of DOI:10.1007/BF02495093

Reaction of Sml₂(THF)₂ with metallic lithium and trans-stilbene in 1 : 2 : 2 ratio in DME gives the stilbene complex of divalent samarium (PhCHCHPh)Sm(DME)₂. This complex reacts with hydrogen in THF to give SmH₂(THF)₂ and 1,2-diphenylethane. The reaction with (Me₃Si)₂NH gives the amide [(Me₃Si)₂N]₂Sm(DME)₂ and the reaction with triphenylgermane yields Ph₃GeGePh₃. Reaction of CpLuCl₂(THF)₂ with 2 equivalents of [PhCHCHPh]^.- Na⁺ in DME results in the dimerization of stilbene fragments to give an ate-complex {Cp₂Lu[μ-CH(Ph)CH(Ph)CH(Ph)CH(Ph)]}Na(DME)₃. In the reaction of Cp₂GdCl with [PhCHCHPh]^.- Na⁺, the known complex Cp₃Gd(THF) was isolated as the only lanthanide-containing product.