2-Diphenylphosphinobenzoic acid

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]

2-Diphenylphosphinobenzoic acid

Names
Preferred IUPAC name 2-(Diphenylphosphanyl)benzoic acid
Identifiers
CAS Number	17261-28-8 N
3D model (JSmol)	Interactive image
ChEMBL	ChEMBL361405
ChemSpider	78496
ECHA InfoCard	100.037.524
EC Number	241-293-7
PubChem CID	87021
UNII	5TH63M8SLV Y
CompTox Dashboard (EPA)	DTXSID4066179
InChI InChI=1S/C19H15O2P/c20-19(21)17-13-7-8-14-18(17)22(15-9-3-1-4-10-15)16-11-5-2-6-12-16/h1-14H,(H,20,21) Key: UYRPRYSDOVYCOU-UHFFFAOYSA-N
SMILES C1=CC=C(C=C1)P(C2=CC=CC=C2)C3=CC=CC=C3C(=O)O
Properties
Chemical formula	C19H15O2P
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)
Solubility in water	alcohols, acetone, CH2Cl2
Hazards
GHS labelling:
Pictograms
Signal word	Warning
Hazard statements	H315, H319, H332, H335
Precautionary statements	P261, P264, P271, P280, P302+P352, P304+P312, 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). Infobox references

Related compounds

• Diphenylphosphinobenzaldehyde