Intramolecular Exchange of Coordinated and Dangling Phosphine Groups in Pentacarbonyl[(diphenylphosphino)(di-p-tolylphosphino)methane]tungsten(0)

Intramolecular Exchange of Coordinated and Dangling Phosphine Groups in Pentacarbonyl[(diphenylphosphino)(di-p-tolylphosphino)methane]tungsten(0)

Equilibrium constants and rates have been determined for the isomerization of the linkage isomers (OC)5W­[κ1-PPh2CH2P­(p-tolyl)2] (5) and (OC)5W­[κ1-P­(p-tolyl)2CH2PPh2] (6). It is proposed that this intramolecular exchange involves a nucleophilic attack of the pendant phosphine on a cis carbonyl gr...

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Veröffentlicht in:Organometallics 2012-06, Vol.31 (12), p.4619-4622
Hauptverfasser: Keiter, Richard L, Chen, Deliang, Holloway, Geoffrey A, Keiter, Ellen A, Zang, Yi, Huml, M. Todd, Filley, Jonathan, Brandt, Douglas E
Format: Artikel
Sprache:eng
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Zusammenfassung:Equilibrium constants and rates have been determined for the isomerization of the linkage isomers (OC)5W­[κ1-PPh2CH2P­(p-tolyl)2] (5) and (OC)5W­[κ1-P­(p-tolyl)2CH2PPh2] (6). It is proposed that this intramolecular exchange involves a nucleophilic attack of the pendant phosphine on a cis carbonyl group, followed by ring opening and a 1,2-shift.
ISSN:0276-7333
1520-6041
DOI:10.1021/om300092x