Chlorthionitrenkomplexe des Molybdäns

Chlorothionitrene Complexes of Molybdenum Molybdenum pentachloride reacts with trimer thiazylchloride, (NSCl)₃, forming the chlorothionitrene complex \documentclass{article}\pagestyle{empty}\begin{document}$ {\rm Cl}_4 {\rm Mo} = \mathop {\rm N}\limits^ \oplus = \mathop {{\rm SCl}}\limits^ \ominus $\end{document}, in which the chlorothionitrene ligand is to be understood as (NSCl)^2? group. I reacts with phosphorylchloride forming the solvate Cl₃PO? Mo(Cl₄)(NSCl) ( II ) that can also be obtained directly from MoCl₅ · OPCl₃ and trithiazylchloride. II reacts with chloride ions giving the anionic chlorothionitrene complex Cl₅Mo(NSCl)]? ( III ). Thermal decomposition of I leads to MoNCl₃ under SCl₂ cleavage, while reaction of I with chloride ions gives MoNCl₄]?. Both reactions prove chlorothionitrene complexes to be excellent precursors for the syntheses of nitrido complexes. The complexes I—III have been characterized by IR spectroscopy.