Formation of thallium and Its Utility in the Synthesis of Heterobimetallic Ti-Mn Complexes: The Molecular Structure of (η5-Cyclopentadienyl)dicarbonyl5-cyclopentadienyl)5-(diphenylphosphino)cyclopentadienyl>dichlorotitanium-P>manganese

Article abstract of DOI:10.1021/ja00350a024

A reaction between (C5H5)P(C6H5)2 and TlOEt in ethyl ether produces Tl in quantitative yield.Treatment of (η⁵-C5H5)TiCl3 with Tl affords (η⁵-C5H5))TiCl2 in 95 percent yield.Reductive carbonylation of the latter complex yields (η⁵-C5H5)<η⁵-C5H4P(C6H5)2>Ti(CO)2.Both of these phosphine-substituted titanocene derivatives react with (η⁵-C5H5)(CO)2(THF)Mn to generate the respective bimetallic complexes (η⁵-C5H5)(CO)2<(η⁵-C5H5)<η⁵-C5H4P(C6H5)2>TiCl2>Mn and (η⁵-C5H5)(CO)2<(η⁵-C5H5)<η⁵-C5H4P(C6H5)2>Ti(CO)2>Mn in good yield.In the presence of air, the latter complex undergoes facile decomposition to yield (η⁵-C5H5)Mn(CO)2<(C5H5)2P>.The crystal and molecular structure of the bimetallic complex (η⁵-C5H5)(CO)2<(η⁵-C5H5)<η⁵-C5H4P(C6H5)2>TiCl2>Mn has been determined by X-ray diffraction methods.