Table 1
Assigned features of the infrared spectrum of the EXP1 ice mixture H2O:CH3OH:NH3: = 10:1:1 after 56 h of VUV photolysis at 25 K.
| EXP1 25 K | |||
| Wavenumber (cm-1) | Assignments | Species | References |
|
|
|||
| 1723 | ν(CO) | H2CO | Schutte et al. (1993) |
| 1710 | ν(CO) | HCOOH/NH2CHO | Schutte et al. (1999)/Brucato et al. (2006) |
| 1638 | δ(OH) | H2O | Palumbo (2005)* |
| 1585 | νas(COO−) | HCOO− | Schutte et al. (1999) |
| 1502 | δ(CH2) | H2CO | Schutte et al. (1993) |
| 1460 | δ(OH) / δ(NH) | CH3OH /  ? |
Schutte et al. (1999) |
| 1378 | δs (CH) | HCOO− | Schutte et al. (1999) |
| 1353 | δas (CH) | HCOO− | Schutte et al. (1999) |
| 1246 | ρ(CH2) | H2CO | Schutte et al. (1993) |
| 1122 | ω(NH) | NH3 | Kerkhof et al. (1999) |
| 1024 | ν(C-O) | CH3OH | Kerkhof et al. (1999) |
| 840 b | libration | H2O | Palumbo (2005)* |
Notes.Vibration mode: stretching (ν), bending (δ), rocking (ρ), inversion (ω). as: asymmetric mode, s: symmetric mode. * Tentatively assigned to water bands in a complex environment changing the position bands from pure water ice.
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