Table 1. Fitting Parameters for the SFG Spectra of 1 mM OA in D₂O at Various pH*s in SSP Polarization with Gamma Reported in FWHM.

pH*	AR with ANR = 0.02, φNR = −0.13, and Γi = 60 cm–1	ωi (cm–1)
1.2	13.5 ± 2.6	1710 ± 3
1.9	12.4 ± 0.4	1707 ± 0
3.2	12.7 ± 0.3	1707 ± 0
4.4	13.1 ± 1.9	1702 ± 3
5.5	7.0 ± 2.3	1693 ± 2
7.4	0	0