C 2 -Bridged Titanocene−Ferrocenyl Complexes: Synthesis, Reaction Chemistry, and Electrochemical Behavior
1998; American Chemical Society; Volume: 17; Issue: 1 Linguagem: Inglês
10.1021/om9701231
ISSN1520-6041
AutoresStephan Back, Hans Pritzkow, Heinrich Lang,
Tópico(s)Synthetic Organic Chemistry Methods
ResumoLiC⋮CFc (2; Fc = (η5-C5H4)(η5-C5H5)Fe) reacts with [Ti]Cl2 (1a) ([Ti] = (η5-C5H4SiMe3)2Ti) in a 2:1 molar ratio to produce the C2-bridged titanocene−ferrocenyl complex [Ti](C⋮CFc)2 (3). While treatment of heterotrinuclear 3 with Ni(CO)4 (4) affords the heterotetranuclear tweezer complex {[Ti](C⋮CFc)2}Ni(CO) (5), reaction of 3 with NiCl2 (6) yields FcC⋮CC⋮CFc (7) along with [Ti]Cl2 (1a) and Ni0 in a redox reaction. 7 can also be synthesized in the chemical oxidation of 3 with 2 equiv of AgPF6. The electrochemical behavior of compounds 3 and 5 is discussed. The X-ray structure analysis of complex 3 is reported.
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