Open Access

Table A.3

Peak positions of the CH3OH C-H symmetric stretching mode at ~3.53 µm at temperatures from 15 to 145 K in pure CH3OH ice and CH3OH ice mixed with H2O. We estimated uncertainties of 0.5 cm−1 for these peak positions.

T(K) Pure CH3OH CH3OH:H2O 2:1 CH3OH:H2O 1:1 CH3OH:H2O 1:2 CH3OH:H2O 1:5
(cm−1) (µm) (cm−1) (µm) (cm−1) (µm) (cm−1) (µm) (cm−1) (µm)
15 2827.9 3.5362 2827.9 3.5362 2828.6 3.5353 2829.1 3.5347 2830.7 3.5326
25 2827.9 3.5362 2827.9 3.5362 2828.6 3.5353 2829.1 3.5347 2830.7 3.5326
35 2827.9 3.5362 2827.9 3.5362 2828.6 3.5353 2829.1 3.5347 2830.7 3.5326
45 2828.3 3.5366 2827.9 3.5362 2828.6 3.5353 2829.1 3.5347 2830.5 3.5329
55 2828.3 3.5366 2828.3 3.5356 2828.8 3.5350 2829.1 3.5347 2830.3 3.5332
65 2828.6 3.5353 2828.6 3.5353 2828.8 3.5350 2829.3 3.5344 2830.3 3.5332
75 2829.1 3.5347 2828.8 3.5350 2829.3 3.5344 2829.5 3.5341 2830.3 3.5332
85 2829.3 3.5344 2829.1 3.5347 2829.5 3.5341 2829.5 3.5341 - -
95 2829.5 3.5341 2829.5 3.5341 2829.8 3.5338 2830.0 3.5335 - -
105 2829.5 3.5341 2829.8 3.5338 2830.0 3.5335 2830.3 3.5332 2830.5 3.5329
115 2831.2 3.5320 2829.3 3.5344 2830.3 3.5332 2830.5 3.5329 2831.0 3.5323
125 2831.5 3.5317 2829.3 3.5344 2829.8 3.5338 2830.7 3.5326 2831.0 3.5323
135 2831.5 3.5317 2829.8 3.5338 2830.0 3.5335 2831.7 3.5314 2831.7 3.5314
145 2831.7 3.5314 2830.5 3.5329 2831.2 3.5320 2832.2 3.5308 2832.7 3.5302

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