Mehrfachbindungen zwischen Hauptgruppenelementen und Übergangsmetallen : XLV. Eigenschaften und Reaktionsverhalten von Hydrogenchalkogenid-Komplexen der Metalle Chrom, Molybdän und Wolfram

Hydrogensulfido and hydrogenselenido complexes of general composition (η⁵-C₅R₅(CO)3M(EH) (R = H, CH₃; M = Cr, Mo, W; E = S, Se) react at the EH functions by deprotonation, bimolecular elimination of H₂E, or by loss of the chalcogen atoms E. Reactions with Lewis-acidic complex cations such as ((η⁵-C₅R₅)(CO)₃M]⁺ (R = H, CH₃; M = Mo, W) are useful for the synthesis of chalcogen bridged compounds (μ-E)(η⁵-C₅R₅)(CO)₃M]₂. The heterodinuclear chalcogen bridge complexes thus generated form metathesis equilibria with their corresponding homodinuclear systems.