Zwitterionic complexes arising from the reaction of tucked-in titanocenes with tris(pentafluorophenyl)borane

摘要

Single tucked-in titanocene [Ti(eta~5-C_5Me_5)(eta~5:eta~1-C_5Me_4CH_2)] adds to B(C_6F_5)_3 to give the paramagnetic cationic complex [Ti(eta~5-C_5Me_5){eta~5-C_5Me_4CH_2B(C_6F_5)_3}] (1).Doubly tucked-in titanocene [Ti(eta~5-C_5Me_5){eta~3:eta~4-C_5Me_3(CH_2)_2}] reacts with B(C_6F_5)_3 by one methylene group to give [Ti(eta~5-C_5Me_5){eta~5:eta~1-C_5Me_3CH_2)CH_2B(C_6F_5)_3}] (6).The crystal structure of 6 revealed that one hydrogen of the methylene group attached to boron agostically interacts with Ti(IV).