Alkyl and alkylidene tantalum-lithium complexes supported by an anionic triazacyclononane ligand

Citation
Jar. Schmidt et al., Alkyl and alkylidene tantalum-lithium complexes supported by an anionic triazacyclononane ligand, ORGANOMETAL, 20(6), 2001, pp. 1062-1064
Citations number
23
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Organic Chemistry/Polymer Science
Journal title
ORGANOMETALLICS
ISSN journal
0276-7333 → ACNP
Volume
20
Issue
6
Year of publication
2001
Pages
1062 - 1064
Database
ISI
SICI code
0276-7333(20010319)20:6<1062:AAATCS>2.0.ZU;2-4
Abstract
A new Pr-i(2)-tacn(-)-supported alkyl tantalum species, (Me3SiCH2)(2)(RN=)T a(mu -CH2SiMe3)(mu -n(1):n(3)-(i)-Pr-2-tacn)Li (R = 2,6-(Pr2C6H3)-Pr-i; 2), was synthesized and found to undergo alpha -H abstraction under gentle hea ting to form the alkylidene (Me3SiCH2)(RN=)Ta(mu -CHSiMe3)(mu -n(1):n(3)-Pr -i(2)-tacn)Li (3), The syntheses and crystal structures of 2 and 3 and thei r precursor ((Pr-i(2)-tacn)TaCl2(=NR) (1)) are described, as well as kineti c data for the first-order thermolysis reaction producing 3.