Authors
Citation
Am. Sheloumov et al., Reaction of alkyne cluster Os-3(mu-CO)(CO)(9)(mu(3)-eta(1):eta(1):eta(2)-Me3SiC2Me) with HC equivalent to CCOOMe. Molecular and crystal structures ofOs-3(CO)(9){mu(3)-eta(1):eta(1):eta(2):eta(2)-C(SiMe3)C(Me)C(COOMe)CH} andOs-3(CO)(8){mu(3)-eta(1):eta(1):eta(4):eta(1)-C(SiMe3)C(Me)C(H)C(COOMe)} complexes, RUSS CHEM B, 48(9), 1999, pp. 1767-1773
Citations number
15
Categorie Soggetti
Chemistry
Journal title
RUSSIAN CHEMICAL BULLETIN
ISSN journal
10665285
→ ACNP
Volume
48
Issue
9
Year of publication
1999
Pages
1767 - 1773
Database
ISI
SICI code
1066-5285(199909)48:9<1767:ROACO>2.0.ZU;2-B
Abstract
Reaction of the cluster Os-3(mu-CO)(CO)(9)(mu(3)-eta(1):eta(1):eta(2)-Me3Si
C2Me) with HC drop CCOOMe in benzene at 70 degrees C results in Os-3(CO)(9)
{mu(3)-eta(1):eta(1):eta(2):eta(2)-C(SiMe3)C(Me)C(COOMe)CH} (5), Os-3(CO)(9
){mu(3)-eta(1):eta(1):eta(2):eta(2)-C(SiMe3)C(Me)C(H)C(COOMe)} (6), Os-3(CO
)(9){mu-eta(1):eta(1):eta(4)-C(SiMe3)C(Me)C(COOMe)CH} (7), and Os-3(CO)(8){
mu(3)-eta(1):eta(1):eta(4):eta(1)-C(SiMe3)C(Me)C(H)C(COOMe)} complexes 8, c
ontaining an osmacyclopentadiene moiety. Complexes 5-8 were characterized b
y H-1 NMR and IR spectroscopy. The structure of clusters 5 and 8 was confir
med by X-ray analysis. Complex 7 is formed from cluster 5 as a result of a
new intramolecular rearrangement and complex 8 is obtained by decarbonylati
on of compound 6. Complex 8 adds PPh3 to give Os-3(CO)(8)(PPh3){mu-eta(1):e
ta(1):eta(4)-C(SiMe3)C(Me)C(H)(COOMe)}.