REACTIONS OF CATIONIC ETA(2)-PHOSPHINOCAR BENE COMPLEXES OF TUNGSTEN WITH ANIONIC NUCLEOPHILES

Authors
LEHOTKAY T OSTERMEIER J OGRIC C KREISSL FR
Citation
T. Lehotkay et al., REACTIONS OF CATIONIC ETA(2)-PHOSPHINOCAR BENE COMPLEXES OF TUNGSTEN WITH ANIONIC NUCLEOPHILES, Journal of organometallic chemistry, 520(1-2), 1996, pp. 59-62
Citations number
19
Categorie Soggetti
Chemistry Inorganic & Nuclear","Chemistry Inorganic & Nuclear
Journal title
Journal of organometallic chemistry → ACNP
ISSN journal
0022328X
Volume
520
Issue
1-2
Year of publication
1996
Pages
59 - 62
Database
ISI
SICI code
0022-328X(1996)520:1-2<59:ROCEBC>2.0.ZU;2-E
Abstract
eta(2)-Phosphinocarbene complexes of tungsten show a different behavio ur towards anionic nucleophiles. The cationic eta(2)-phosphinocarbene complex [Cp(CO)(2)<(W=C(Tol)PP)over bar>h(2)][BPh(4)] reacts with the thiophenolate anion PhS(-) via carbonyl substitution, whereas the corr esponding trimethylphosphine substituted carbene complex [Cp(CO)(PMe(3 ))<(W=C(Tol)PP)over bar>h(2)][BF4] adds the cyclopentadienyl anion at the carbene carbon atom. A third reaction pathway is observed on treat ing [Cp(CO)(2)<(W=C(Me)PP)over bar>h(2)][BPh(4)] with lithium diethyla mide, providing a neutral eta(2)-phosphinovinyl complex.