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Table 3.
Absolute (A) and effective (A′) band strengths of CH3OH crystalline ice grown at the indicated temperatures.
| Label | Mode | Peak | Integration | A | A′ | A | A′ | A | A′ |
|---|---|---|---|---|---|---|---|---|---|
| cm−1 | interval | (× 1018 cm molecule−1) | |||||||
| cm−1 | 130 K | 120 K | 110 K | ||||||
| 4742 | 4812–4649 | – | 0.031 | – | 0.041 | 0.028 | |||
| 4399 | 4622–4200 | – | 0.44 | – | 0.469 | 0.527 | |||
| 4270 | 4322–4224 | – | 0.045 | – | 0.049 | 0.058 | |||
| 4026 | 4168–3888 | – | 0.411 | – | 0.436 | 0.402 | |||
| 3858 | 3888–3823 | – | 0.049 | – | 0.054 | 0.033 | |||
| ν1 | OH str. | ||||||||
| ν3, ν9 | CH3 str. | 2950 | 3600–2700 | 164 | 150 | 179 | 168 | 185 | 178 |
| ν3, ν9 | CH3 str. | 2832 | 2875–2785 | 7.03 | 6.51 | 8.15 | 7.62 | 6.24 | 6.08 |
| 2537 | 2704–2413 | 4.21 | 3.9 | 4.56 | 4.25 | 4.5 | 4.47 | ||
| 2251 | 2302–2206 | 0.29 | 0.28 | 0.33 | 0.3 | 0.32 | 0.33 | ||
| 2036 | 2077–2020 | 0.35 | 0.38 | 0.38 | 0.42 | 0.26 | 0.29 | ||
| ν4, ν5 | CH3 bend | ||||||||
| ν6, ν10 | OH bend | 1460 | 1742–1420 | 7.24 | 8.12 | 8.11 | 9.26 | 6.97 | 8.62 |
| 1336 | 1421–1235 | 2.09 | 1.87 | 2.03 | 1.94 | 1.57 | 1.81 | ||
| ν7 | CH3 rock | 1142 | 1224–1132 | 0.68 | 0.72 | 0.76 | 0.85 | 0.61 | 0.73 |
| ν8 | CO str. | 1027 | 1133–996 | 12.8 | 11.7 | 14.5 | 13.1 | 11.8 | 11.7 |
| ν12 | torsion | 720 | 991–650 | 18.9 | 15.1 | 20.3 | 22.4 | 20.7 | 19.2 |
Notes.First two columns: mode assignment; third column: wavenumber of the strongest peak in the integration interval; fourth column: integration interval.
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