New Examples of Half-Sandwich (Borylcyclopentadienyl)titanium Trichloride Complexes and an X-ray Structural Characterization of the Homobimetallic Complex [TiCl 3 {η 5 -C 5 H 4 }] 2 BPh
1996; American Chemical Society; Volume: 15; Issue: 9 Linguagem: Inglês
10.1021/om9600699
ISSN1520-6041
AutoresScott A. Larkin, Jeffery T. Golden, Pamela J. Shapiro, Glenn P. A. Yap, David Ming Jin Foo, Arnold L. Rheingold,
Tópico(s)Synthesis and characterization of novel inorganic/organometallic compounds
ResumoA new series of half-sandwich (borylcyclopentadienyl)titanium trichloride complexes have been prepared which include the boryl substituents [1,2-(C6H4O2)]B−, Ph(Cl)B−, Ph2B− and a (PhB<)-bridged bimetallic complex. No correlation was found between the 1H and 13C NMR chemical shifts of the cyclopentadienyl ring in these complexes and the Lewis acidity of the attached boryl group. The crystal structure of the phenylboron-bridged bimetallic complex PhB{(η5-C5H4)TiCl3}2 was determined. The cyclopentadienyltitanium units of the molecule are twisted away from each other, forming an angle of 41° between the cyclopentadienyl ring planes. Each cyclopentadienyl ring is twisted out of the trigonal plane of the boron by 24°. Preliminary results concerning the Ti-alkylation of some of these complexes are described.
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