(7)) are formed by sulfur transfer reactions. For the generation of 4, 6 electronic reasons are relevant. Considering the formation of the manganese compounds 5, 7 a distinct dependence of the product distribution is observed on the steric demand of the organic substituents R. 6d crystallizes in the triclinic space group Pi with Z = 2. 7Durch Verwendung besonders sperriger" oder elektronenreicher') organischer Substituenten gelang in den zuruckliegenden Jahren die Stabilisierung von Di-

No abstract

H3CPS, the first organophosphorus species with a PIIIS double bond, could be generated as intermediate by dehalogenation of the phosphorane H3CP(S)Cl2 with highly reactive magnesium. It was trapped with Mn2(CO)10. The H3CPS ligand in complex 1 is coupled side‐on with Mn(CO)4 and end‐on via the P atom with Mn(CO)5.

The thioxophosphanes RPS are stabilized in the protecting coordination sphere of the carbonyl‐Mo and ‐Mn complexes (IIIa)‐(IIId) or (VIIa), (VIIc)‐(VIIf).

Die durch Dehalogenierung von (I) durch Magnesium gebildete intermediäre Titelverbindung wird durch Anwesenheit von Mn3ger ," in der Reaktionsmi‐ I37 schung in Form des Komplexes (II) abgefangen, in dem ihr Molekülgerüst erhalten bleibt.