2-Diphenylphosphinobenzoic acid

2-Diphenylphosphinobenzoic acid
3D model (JSmol)
Molar mass 306.301 g·mol−1
Appearance white solid
Density 1.278 g/cm3
Melting point 174–181 °C (345–358 °F; 447–454 K)
alcohols, acetone, CH2Cl2
GHS pictograms GHS07: Harmful
GHS Signal word Warning
H315, H319, H332, H335
P261, P264, P271, P280, P302+352, P304+312, P304+340, P305+351+338, P312, P321, P332+313, P337+313, P362, P403+233, P405, P501
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Infobox references

2-Diphenylphosphinobenzoic acid is an organophosphorus compound with the formula (C6H5)2PC6H4CO2H. It is a white solid that dissolves in polar organic solvents. The ligand is a component of catalysts used for the Shell higher olefin process.[1] It is prepared by the reaction of sodium diphenylphosphide with the sodium salt of 2-chlorobenzoic acid.[2]


  1. ^ Keim W, Schulz R. P. (1994). "Chelate control in the nickel-complex catalysed homogeneous oligomerization of ethylene". Journal of Molecular Catalysis. 92: 21–33. doi:10.1016/0304-5102(94)00050-6.CS1 maint: uses authors parameter (link)
  2. ^ Hoots, J. E., Rauchfuss, T. B., Wrobleski, D. A. (1982). "Substituted Triaryl Phosphines". Inorganic Syntheses. 21: 175–179. doi:10.1002/9780470132524.ch39. ISBN 9780470132524.CS1 maint: uses authors parameter (link)