A method for the production of titanium (iii) coordination complexes

摘要

Prepn. of Ti(III) coordination complexes by redn. of a Ti(IV) salt, comprises: a). forming an ether complex of the Ti(IV) salt using a stoichiometric excess of ether; b). reducing the complex with an organometallic or metal hydride to form a Ti(III)-ether coordination complex. Pref. the ether is tetrahydrofuran, ethylene glycol dimethyl ether, diglyme, triglyme or tetraglyme. The redn. agent is an Li cpd., pref. Li-alkyl or LiH, or an Al-alkyl having 1-20C, pref. triethyl-Al, tri-n-butyl-Al, triisobutyl-Al, tri-n-propyl-Al, tri-n-heyxyl-Al, tri-n-octyl-Al or diisobutyl-Al and the Ti(IV) salt is a halide, esp. TiCl4.