Perfluormethyl-Element-Liganden. Reaktionen der Metallhydride π-C5H5(CO)3 MH (M = Cr,Mo, W) mit Organoelement-Elementverbindungen des Typs R2EER2 und RE′ E′ R (E = As; E′ = S,Se; R = CH3 CF3)

Perfluoromethyl Element Ligands. XXX. Reactions of the Metal Hydridesπ-C₅H₅(CO)₃MH (M = Cr, Mo, W) with Organoelement-Element Compounds of the Type R₂ EER₂ and RE′ ′E ′R (E = P, As; E′ = S, Se; R = CH₃, CF₃) Cleavage reactions of R₂EER₂ and RE′E′R, respectively, (E = P, As; E′ = S, Se; R = CH₃, CF₃) with complexes π-C₅H₅(CO)₃MH (M = Cr, Mo, W) are used (a) to prepare known and novel complex subsituted phosphanes, arsanes, sulfanes, or selanes π-C₅H₅(CO)₃MER₂ (I) and π-C₅H₅(CO)₃ME′R (II), respectively, (b) to study the reactivity trends as a function of E, E′, R, and M (see Inhaltsübersicht). The tendency observed for the formation of the binuclear complexes π-C₅H₅(CO)₂MER₂]₂ and π-C₅H₅(CO)₂ME′R]₂, respectively, in following reactions of I and II increases in the series W ? Mo ≤ Cr and SeCF₃ < As(CF₃)₂ < SCF₃ ≈ P(CF₃)₂ < SeMe < AsMe₂ ?; PMe₂ ≈ SMe.