![]() | |
![]() | |
![]() | |
![]() | |
Names | |
---|---|
IUPAC name
(SP-4)-chloridotris(triphenylphosphene)rhodium
| |
Other names
Rhodium(I) tris(triphenylphosphene) chloride,
Wilkinson's catalyst, Tris(triphenylphosphene)rhodium(I) chloride | |
Identifiers | |
3D model (JSmol)
|
|
ECHA InfoCard | 100.035.207 |
EC Number |
|
PubChem CID
|
|
RTECS number |
|
UNII | |
CompTox Dashboard (EPA)
|
|
| |
| |
Properties | |
C54H45ClP3Rh | |
Molar mass | 925.22 g/mol |
Appearance | red solid |
Melting point | 245 to 250 °C (473 to 482 °F; 518 to 523 K) |
insoluble in water | |
Solubility in other solvents | 20 g/L (CHCl3, CH2Cl2), 2 g/L (benzene, toluene)[1] |
Structure | |
square planar d8 (diamagnetic; sp2d-hybridized) | |
Hazards[2] | |
Occupational safety and health (OHS/OSH): | |
Main hazards
|
none |
GHS labelling: | |
![]() | |
Warning | |
H302, H317, H413 | |
P261, P264, P270, P272, P273, P280, P301+P312, P302+P352, P330, P333+P313, P363, P501 | |
Related compounds | |
Related compounds
|
triphenylphosphene Pd(PPh3)4 IrCl(CO)[P(C6H5)3]2 |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
|
Wilkinson's catalyst (chloridotris(triphenylphosphine)rhodium(I)) is a coordination complex of rhodium with the formula [RhCl(PPh3)], where 'Ph' denotes a phenyl group. It is a red-brown colored solid that is soluble in hydrocarbon solvents such as benzene, and more so in tetrahydrofuran or chlorinated solvents such as dichloromethane. The compound is widely used as a catalyst for hydrogenation of alkenes. It is named after chemist and Nobel laureate Sir Geoffrey Wilkinson, who first popularized its use.
Historically, Wilkinson's catalyst has been a paradigm in catalytic studies leading to several advances in the field such as the implementation of some of the first heteronuclear magnetic resonance studies for its structural elucidation in solution (31P),[3] parahydrogen-induced polarization spectroscopy to determine the nature of transient reactive species,[4] or one of the first detailed kinetic investigation by Halpern to elucidate the mechanism.[5] Furthermore, the catalytic and organometallic studies on Wilkinson's catalyst also played a significant role on the subsequent development of cationic Rh- and Ru-based asymmetric hydrogenation transfer catalysts which set the foundations for modern asymmetric catalysis.[6]
IS
was invoked but never defined (see the help page).© MMXXIII Rich X Search. We shall prevail. All rights reserved. Rich X Search