ISSN:
1434-1948
Keywords:
Boron
;
Titanium
;
Zirconium
;
Hafnium
;
Metallocenophanes
;
Metallocenophanes
;
Chemistry
;
General Chemistry
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
Notes:
Various [1]borametallocenophane complexes of all the group IV metals were obtained in high yield by a very efficient multistep, one-pot synthesis. By this method not only the biscyclopentadienyl and diindenyl complexes [{R2NB(η5-C5H4)2}MCl2] (M = Zr, R = Me, SiMe3, 4a, b; M = Hf, R = SiMe3, 5) and [{(Me3Si2)NB(η5-C9H6)2}MCl2] (M = Ti, 6; M = Zr, 7) were obtained, but also complexes with two different η5-coordinated ligands such as [{iPr2NB(η5-C5H4)(η5-C9H6)}MCl2] (M = Zr, 8; M = Hf, 9). Some of compounds 4-9 were chosen to investigate their catalytic properties with respect to Ziegler-Natta-type polymerisation of olefins, and proved to be highly efficient for the preparation of polyethylene.
Additional Material:
2 Ill.
Type of Medium:
Electronic Resource
