SYNTHESIS OF A SQUARE PYRAMIDAL TUNGSTEN(VI) ALKYLIDENE COMPLEX WITH A BIS(AMIDE) CHELATE LIGAND

Authors
VANDERLENDE DD ABBOUD KA BONCELLA JM
Citation
Dd. Vanderlende et al., SYNTHESIS OF A SQUARE PYRAMIDAL TUNGSTEN(VI) ALKYLIDENE COMPLEX WITH A BIS(AMIDE) CHELATE LIGAND, Organometallics, 13(9), 1994, pp. 3378-3380
Citations number
17
Categorie Soggetti
Chemistry Inorganic & Nuclear","Chemistry Inorganic & Nuclear
Journal title
Organometallics → ACNP
ISSN journal
02767333
Volume
13
Issue
9
Year of publication
1994
Pages
3378 - 3380
Database
ISI
SICI code
0276-7333(1994)13:9<3378:SOASPT>2.0.ZU;2-N
Abstract
Reaction of Li-2[(NSiMe(3))(2)C6H4] with W(NPh)-Cl-4(OEt(2)) yields W( NPh)Cl-2[(NSiMe(3))(2)C6H4], 3. Compound 3 can be alkylated to give th e corresponding dialkyls, W(NPh)R(2)[(NSiMe(3))(2)C6H4]. W(NPh)(CH(2)C Me(3))(2)[(NSiMe(3))(2)C6H4], 4a, can be heated in the presence of exc ess PMe(3) to give the new alkylidene complex W(NPh)(CHCMe(3))[(NSiMe( 3))(2)C6H4], 5. The X-ray structure of 5 reveals that 5 adops a unique square pyramidal structure with the alkylidene carbon in teh apical p osition.