Hydridotetrakis(triphenylphosphine)rhodium(I)

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Hydridotetrakis(triphenylphosphine)­rhodium(I)
Identifiers
3D model (
JSmol
)
ChemSpider
ECHA InfoCard
 100.153.466 Edit this at Wikidata
EC Number
  • 624-922-3
  • C1=CC=C(C=C1)P(C2=CC=CC=C2)C3=CC=CC=C3.C1=CC=C(C=C1)P(C2=CC=CC=C2)C3=CC=CC=C3.C1=CC=C(C=C1)P(C2=CC=CC=C2)C3=CC=CC=C3.C1=CC=C(C=C1)P(C2=CC=CC=C2)C3=CC=CC=C3.[Rh][H]
Properties
C72H61P4Rh
Molar mass 1153.12
Appearance yellow solid
Density 1.328 g/cm3
Melting point 162–163 °C (324–325 °F; 435–436 K)
Hazards
GHS labelling:
GHS07: Exclamation mark
Warning
H315, H319, H335
P261, P264, P271, P280, P302+P352, P304+P340, P305+P351+P338, P312, P321, P332+P313, P337+P313, P362, P403+P233, P405, P501
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).

Hydridotetrakis(triphenylphosphine)rhodium(I) is the

homogeneous catalyst for hydrogenation and related reactions.[2]
It is a yellow solid that dissolves in aromatic solvents.

Preparation

In the presence of base, H2, and additional triphenylphosphine, Wilkinson's catalyst (chloridotris(triphenylphosphane)rhodium(I)) converts to HRh(PPh3)4:[3]

RhCl(PPh3)3 + H2 + KOH + PPh3 → RhH(PPh3)4 + H2O + KCl

References

  1. doi:10.1039/c29690001495
    .
  2. doi:10.1002/047084289X.rh030m
  3. ISBN 9780470132593. {{cite book}}: |journal= ignored (help
    )
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