Complexes with functional phosphines
Identifieur interne : 002A71 ( Istex/Checkpoint ); précédent : 002A70; suivant : 002A72Complexes with functional phosphines
Auteurs : Pierre Braunstein [France] ; Silverio Coco Cea [France] ; Michael I. Bruce [France] ; Brian W. Skelton [Australie] ; Allan H. White [Australie]Source :
- Journal of Organometallic Chemistry [ 0022-328X ] ; 1992.
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Abstract
Abstract: Reactions of the ketophosphine Ph2PCH2C(O)Ph (PO) with [Ru3(CO)12] afford the derivatives [Ru3(CO)11(PO)] (1) and [Ru3(CO)10(PO)2] (4). In the presence of triphenylphosphiniminium acetate (PPN)(OAc), the former leads to the labile [Ru3(CO)10{μ-(P O)}] (2), in which the functional phosphine acts as a (P,O) bridging ligand, whereas thermal activation of either 1 or 4 results in PCH bond cleavage and formation of [Ru3(μ-H) [μ-η1(O):η2(P,O) -O( CPh) CHPPh2} (CO)9] (3) whose crystal structure reveals an unprecedented bonding mode for the phosphinoenolate ligand, its oxygen atom bridging the Ru(1)Ru(2) edge. Protonation of this complex occurs selectively at the enolato-carbon and [Ru3 (μ-H)(μ-Ph2PCH2C(O)Ph}(CO)10]BF4 (5) and [Ru3(μ-H)(μ-Ph2PCH2C(O)Ph}2(CO)8]BF4 (7) were characterized in which the PO ligand(s) bridge between two Ru centres.
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DOI: 10.1016/0022-328X(92)83137-7
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Bruce">Michael I. Bruce</name><affiliation wicri:level="0"><country wicri:rule="zip">France</country></affiliation></author><author><name sortKey="Skelton, Brian W" sort="Skelton, Brian W" uniqKey="Skelton B" first="Brian W." last="Skelton">Brian W. Skelton</name><affiliation wicri:level="1"><country xml:lang="fr">Australie</country><wicri:regionArea>Department of Chemistry, University of Western Australia, Nedlands</wicri:regionArea><wicri:noRegion>Nedlands</wicri:noRegion></affiliation></author><author><name sortKey="White, Allan H" sort="White, Allan H" uniqKey="White A" first="Allan H." last="White">Allan H. White</name><affiliation wicri:level="1"><country xml:lang="fr">Australie</country><wicri:regionArea>Department of Chemistry, University of Western Australia, Nedlands</wicri:regionArea><wicri:noRegion>Nedlands</wicri:noRegion></affiliation></author></analytic><monogr></monogr><series><title level="j">Journal of Organometallic Chemistry</title><title level="j" type="abbrev">JOM</title><idno type="ISSN">0022-328X</idno><imprint><publisher>ELSEVIER</publisher><date type="published" when="1992">1992</date><biblScope unit="volume">423</biblScope><biblScope unit="issue">3</biblScope><biblScope unit="page" from="C38">C38</biblScope><biblScope unit="page" to="C42">C42</biblScope></imprint><idno type="ISSN">0022-328X</idno></series></biblStruct></sourceDesc><seriesStmt><idno type="ISSN">0022-328X</idno></seriesStmt></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>External reference</term><term>Ligand</term><term>Phosphinoenolate ligand</term></keywords><keywords scheme="Teeft" xml:lang="en"><term>External reference</term><term>Ligand</term><term>Phosphinoenolate ligand</term></keywords></textClass><langUsage><language ident="en">en</language></langUsage></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">Abstract: Reactions of the ketophosphine Ph2PCH2C(O)Ph (PO) with [Ru3(CO)12] afford the derivatives [Ru3(CO)11(PO)] (1) and [Ru3(CO)10(PO)2] (4). In the presence of triphenylphosphiniminium acetate (PPN)(OAc), the former leads to the labile [Ru3(CO)10{μ-(P O)}] (2), in which the functional phosphine acts as a (P,O) bridging ligand, whereas thermal activation of either 1 or 4 results in PCH bond cleavage and formation of [Ru3(μ-H) [μ-η1(O):η2(P,O) -O( CPh) CHPPh2} (CO)9] (3) whose crystal structure reveals an unprecedented bonding mode for the phosphinoenolate ligand, its oxygen atom bridging the Ru(1)Ru(2) edge. Protonation of this complex occurs selectively at the enolato-carbon and [Ru3 (μ-H)(μ-Ph2PCH2C(O)Ph}(CO)10]BF4 (5) and [Ru3(μ-H)(μ-Ph2PCH2C(O)Ph}2(CO)8]BF4 (7) were characterized in which the PO ligand(s) bridge between two Ru centres.</div></front></TEI><affiliations><list><country><li>Australie</li><li>France</li></country></list><tree><country name="France"><noRegion><name sortKey="Braunstein, Pierre" sort="Braunstein, Pierre" uniqKey="Braunstein P" first="Pierre" last="Braunstein">Pierre Braunstein</name></noRegion><name sortKey="Cea, Silverio Coco" sort="Cea, Silverio Coco" uniqKey="Cea S" first="Silverio Coco" last="Cea">Silverio Coco Cea</name><name sortKey="I Bruce, Michael" sort="I Bruce, Michael" uniqKey="I Bruce M" first="Michael" last="I. Bruce">Michael I. Bruce</name></country><country name="Australie"><noRegion><name sortKey="Skelton, Brian W" sort="Skelton, Brian W" uniqKey="Skelton B" first="Brian W." last="Skelton">Brian W. Skelton</name></noRegion><name sortKey="White, Allan H" sort="White, Allan H" uniqKey="White A" first="Allan H." last="White">Allan H. White</name></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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