Diphenylphosphinic acid(1707-03-5) IR2
Product NameDiphenylphosphinic acid
CAS1707-03-5
Molecular FormulaC12H11O2P
Molecular Weight218.19
InChIInChI=1S/C12H11O2P/c13-15(14,11-7-3-1-4-8-11)12-9-5-2-6-10-12/h1-10H,(H,13,14)
InChIKey BEQVQKJCLJBTKZ-UHFFFAOYSA-N
SmilesP(C1=CC=CC=C1)(C1=CC=CC=C1)(O)=O
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MassMS-NW-6984 diphenylphosphinic acid C12H11O2P (Mass of molecular ion: 218)
Source Temperature: 230 °C Sample Temperature: 150 °C Direct, 75 eV
18.0 1.7 27.0 2.6 39.0 4.2 47.0 11.3 50.0 9.6 51.0 28.6 52.0 4.1 63.0 1.8 65.0 2.0 66.0 1.0 74.0 2.8 75.0 2.3 76.0 4.1 77.0 45.8 78.0 15.9 79.0 1.2 94.0 14.2 95.0 1.1 99.5 2.5 100.0 1.0 108.5 1.4 109.0 1.1 125.0 5.0 141.0 7.4 151.0 1.6 152.0 9.0 153.0 4.2 154.0 2.4 170.0 1.0 199.0 46.3 200.0 7.6 201.0 1.3 216.0 1.1 217.0 100.0 218.0 60.9 219.0 9.7
400 MHz in DMSO-d6
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1H NMR 399.65 MHz C12 H11 O2 P 0.031 g : 0.5 ml DMSO-d6 diphenylphosphinic acid 
Assign. Shift(ppm)
A 7.744 B 7.50
Hz ppm Int.3104.55 7.769 696 3096.77 7.749 833 3092.96 7.740 804 3085.17 7.720 756 3014.22 7.543 250 3007.20 7.525 603 3000.18 7.508 748 2994.84 7.494 849 2992.55 7.488 926 2987.67 7.476 998 2985.38 7.470 1000
in DMSO-d6
KBr disc
nujol mull
4880 A,200 M,powder
