Heterocycles as ligands. XVI. [2,5-(Me3C)2C4HNR]MCl3 (M = titanium, zirconium, hafnium; R = H, trimethylsilyl) - Azacyclopentadienyl complexes of Group 4 metals.
In: Journal of Organometallic Chemistry, Jg. 440 (1992) ; Nr. 3, S. 289-296
Zeitschriftenaufsatz / Fach: Chemie
The title complexes I (M = Ti, Zr, Hf; R = H, SiMe3) were prepd. as stable solids from the lithiated pyrroles and MCl4. The p-coordination of the azacyclopentadienyl ligands, as suggested from 13C NMR data, has been confirmed for I (M = Ti, R = H) by an x-ray diffraction study.