Struktur und Reaktivität von Bis(π‐pentamethylcyclopentadienyl)‐(2‐methyliden)titanacyclobutan
- 1 February 1992
- journal article
- research article
- Published by Wiley in European Journal of Inorganic Chemistry
- Vol. 125 (2) , 291-299
- https://doi.org/10.1002/cber.19921250204
Abstract
Structure and Reactivity of Bis(π‐pentamethylcyclopentadienyl)(2‐methylidene)titanacyclobutaneThe reaction of vinyllithium with bis(π‐pentamethylcyclopentadienyl)titanium dichloride in a molar ratio of 2:1 quantitatively yields the unexpected titanacyclobutane derivative(2) (Cp* = [C5(CH3)5]). The isolated complex2has been characterized by spectroscopic methods and by elemental analysis, and its structure has been confirmed by an X‐ray structure determination. The chemical reactivity of2is characterized by the splitting of the four‐membered ring at higher temperatures, forming a titanocene vinylidene fragment {Cp2*Ti = C = CH2} and ethylene. This cycloreversion is confirmed by the fragmentation behavior in the mass spectrometer, and some aspects of it have been studied by Extended Hückel Model calculations.Keywords
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