Synthesis of titanium(IV) ferrocenylaminate complexes
摘要:
Attempts to prepare ferrocenylaminate(1-) complexes of titanium(IV) from a range of ferrocenylaminates are described. These often foundered due to problems of preparing pure samples of the 2-lithiated ferrocenylamines. However, [TiCp2(Fc'CH2CH2N-NMe2)Cl], [TiCp2(Fc'CH2NEt2)Cl] and [TiCp(FcCH(2)NMe(2))(2)Cl], where Fc' = Fe(C5H5)(2-C5H3), were isolated, and the last two were characterised structurally. In the second of these complexes, ferrocenylaminate is unexpectedly monodentate, possibly as a result of steric pressure. The last complex also contains monodentate ferrocenylaminates, and fills in a gap in the structures of the series of complexes [TiCp(Fc'CH2NMe2)(n)Cl3-n] (n = 1-3). (C) 2002 Elsevier Science B.V. All rights reserved.