1H-17O nuclear quadrupole double resonance in phenylphosphinic acid and phenylphosphonic acid. 17O quadrupole coupling in P = O and P-O-H bonds.

The (17)O nuclear quadrupole resonance (NQR) frequencies have been measured in phenylphosphinic acid and phenylphosphonic acid using nuclear quadrupole double resonance. The quadrupole coupling constants have been determined with an uncertainty of +/- 10 kHz and the asymmetry parameter eta with an uncertainty of +/- 0.01. The results are compared to the… (More)