Aryloxo titanium complexes

Scheme 350 shows the structures of a number of mono-Cp titanium complexes with more elaborately substituted aryloxo ligands. The compounds are formed by the reaction of Cp TiCl3 with 1 equiv. of the substituted phenol in the presence of an excess of pyridine or by treatment of the lithium phenoxide with Cp TiCl3 some of them have been... 

Mono-Cp chloro titanium complexes containing a sulfide-bridged chelating bis(aryloxo) ligand have been synthesized and characterized (Scheme 383). The complex Ti(tbmp)Gl2 reacts with LiCp (Cp =Cp, Cp, G5H4SiMe3) to... 

Mono-Cp alkoxo and aryloxo titanium thiolates and sulfides have been widely reported. These complexes show an interesting reactivity, including C-H and G-S bond activation and reduction of Ti(iv) to Ti(m). The incorporation of bulky aryloxo ligands in the coordination environment of the titanium center limits some of this reactivity and alters the chemistry of the compounds considerably. The implications of the electronic and steric effects of these ancillary ligands have been considered.1005-1008... 

The aryloxo and alkoxo titanium complexes were reported to catalyze intermolecular hydroamination of terminal alkynes. Depending on the auxiliary ligands, a... 

Nomura K, Hasumi S, Fujiki M, Itagaki K. Effect of aryloxo substiments in ethylene polymerisation by tris(pyrazolyl)borate titanium(IV) complexes containing aryloxo Hgands of type, TpTiCl2(OAr). Dalton Trans. 2009 38 9052-9057. 

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