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The transition metal arsines C 5 H 5 (CO) 2 LM-As(CH 3 ) 2  (M = Mo, W; L = CO, P(CH 3 ) 3 ) react with elementary sulfur (selenium) in CS 2  to give the transition metal substituted arsine chalcogenides C 5 H 5 (CO) 2 LM-As(CH 3 ) 2 S(Se). Due to the pronounced basicity of the chalcogen centre they are easily converted into cationic mononuclear complexes [trans-C 5 H 5 (CO) 2 P(CH 3 ) 3 Mo-As(CH 3 ) 2 SR] ⊕ X ⊖  by alkylhalides, and into bridged dinuclear complexes tans-C 5 H 5 (CO) 2 P(CH 3 ) 3 Mo-As(CH 3 ) 2 S-ML n  on treatment with THF · Cr(CO) 5  or AgI. The structures of the new compounds are established by spectroscopic investigations.

zeitschrift für naturforschung b

Übergangsmetall-subsituierte Phosphine, Arsine und Stibine, 19 [1]Synthese und einige Eigenschaften übergangsmetall-substituierter Arsinsulfide / Transition Metal Substituted Pliosphines, Arsines and Stibines, 19 [1]Synthesis and Some Properties of Transition Metal Substituted Arsine Sulfides