CONSECUTIVE C-C BOND SCISSION OF AN ALLYL LIGAND ON A WOS3 CLUSTER FRAMEWORK

Citation
Jt. Park et al., CONSECUTIVE C-C BOND SCISSION OF AN ALLYL LIGAND ON A WOS3 CLUSTER FRAMEWORK, Organometallics, 13(9), 1994, pp. 3384-3386
Citations number
24
Language
INGLESE
art.tipo
Note
Categorie Soggetti
Chemistry Inorganic & Nuclear","Chemistry Inorganic & Nuclear
Journal title
ISSN journal
0276-7333
Volume
13
Issue
9
Year of publication
1994
Pages
3384 - 3386
Database
ISI
SICI code
0276-7333(1994)13:9<3384:CCBSOA>2.0.ZU;2-M
Abstract
The reaction, of Os-3(CO)(9)(C(2)R(2)) (R = Tol, Ph; Tol = p-C(6)H(4)M e) with Cp(CO)(2)W=CTol (Cp = eta(5)-C5H5) produces an alkylidyne-alky ne complex pWOs(3)(CO)(10)(mu(3)-eta(2)-C(2)R(2))(mu(3)-CTol) [1a (R = Tol), 1b (R = Ph)], which is converted to two isomeric allyl complexe s CpWOs(3)(CO)(10)(mu(3)-C(3)R(2)Tol) (2a,b and 3a,b) upon thermolysis . Complexes 3a,b, in which the allyl ligand is pi-coordinated to the t ungsten atom, undergo consecutive allyl C-C bond cleavage to afford tr ialkylidyne complexes CpWOs(3)(CO)(9)(mu(3)-CR)(2)(mu 3-CTol) (5a,b) v ia alkylidyne-alkyne complex pWOs(3)(CO)(10)(mu(3)-eta(2)-C(2)R(2))(mu (3)-CTol) or CpWOs(3)(Co)(10)(mu 3-eta(2)-C(2)RTol)(mu(3)-CR) (4a,b), together with formation of CpWOs(3)(CO)(8)(mu(3)-perpendicular to-C(2) R(2))(mu(3)-CTol) or CpWOs(3)(CO)(8)(mu(3)-eta(2)-perpendicular to-C(2 )RTol)(mu(3)-CR) (6a,b) as a minor product.