Open Access
Table B.6
Peak position and FWHM of methyl cyanide CH3 rock (1041.6 cm−1/ 9.600 µm) in pure and mixed ices at temperatures ranging from 15 - 150 K.
| T | Matrix | 1:5 | 1:10 | 1:20 | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Peak | FWHM | Peak | FWHM | Peak | FWHM | Peak | FWHM | Peak | FWHM | Peak | FWHM | ||
| (cm-1) | (cm-1) | (µm) | (µm) | (cm-1) | (cm-1) | (µm) | (µm) | (cm-1) | (cm-1) | (µm) | (µm) | ||
| 15 | Pure ice | 1041.6 | 19.9 | 9.600 | 0.183 | - | - | - | - | - | - | - | |
| H2O | 1040.9 | 14.6 | 9.607 | 0.1351 | 1041.4 | 14.0 | 9.603 | 0.129 | 1041.4 | 13.7 | 9.603 | 0.126 | |
| CO | 1040.9 | 8.6 | 9.607 | 0.079 | 1040.4 | 9.0 | 9.612 | 0.083 | - | - | - | - | |
| CO2 | 1039.9 | 11.1 | 9.616 | 0.103 | 1039.0 | 10.6 | 9.625 | 0.098 | - | - | - | - | |
| CH4 | 1041.9 | 7.7 | 9.598 | 0.071 | 1040.9 | 6.9 | 9.607 | 0.063 | 1040.4 | 6.3 | 9.612 | 0.058 | |
| NH3 | 1037.5 | 13.4 | 9.638 | 0.124 | 1037.5 | 12.3 | 9.638 | 0.115 | 1037.0 | 11.4 | 9.643 | 0.106 | |
| H2O:CO2 | - | - | - | - | 1039.9 | 14.4 | 9.612 | 0.133 | - | - | - | - | |
| 4 comp | - | - | - | - | - | - | - | - | 1040.9 | 12.6 | 9.607 | 0.116 | |
| 30 | Pure ice | 1040.9 | 19.7 | 9.607 | 0.182 | - | - | - | - | - | - | ||
| H2O | 1040.9 | 13.8 | 9.607 | 0.127 | 1041.4 | 12.8 | 9.603 | 0.118 | 1040.4 | 13.7 | 9.612 | 0.127 | |
| CO | 1041.4 | 9.7 | 9.603 | 0.089 | 1040.4 | 14.3 | 9.612 | 0.132 | - | - | - | - | |
| CO2 | 1039.9 | 11.0 | 9.616 | 0.102 | 1039.9 | 10.6 | 9.616 | 0.098 | - | - | - | - | |
| CH4 | 1042.3 | 7.8 | 9.594 | 0.072 | 1041.9 | 6.9 | 9.598 | 0.064 | 1041.9 | 6.1 | 9.598 | 0.057 | |
| NH3 | 1037.5 | 13.5 | 9.638 | 0.126 | 1037.5 | 12.8 | 9.638 | 0.119 | 1037.0 | 11.0 | 9.643 | 0.102 | |
| H2O:CO2 | - | - | - | - | 1039.4 | 14.0 | 9.616 | 0.129 | - | - | - | - | |
| 4 comp | - | - | - | - | - | - | - | - | 1040.9 | 11.3 | 9.607 | 0.104 | |
| 50 | Pure ice | 1041.4 | 18.7 | 9.603 | 0.173 | - | - | - | - | - | - | ||
| H2O | 1040.4 | 13.5 | 9.612 | 0.125 | 1040.4 | 12.1 | 9.612 | 0.112 | 1039.9 | 14.0 | 9.616 | 0.130 | |
| CO2 | 1039.9 | 10.8 | 9.616 | 0.100 | 1039.9 | 10.3 | 9.616 | 0.095 | - | - | - | - | |
| CH4 | 1041.9 | 15.7 | 9.598 | 0.145 | 1040.9 | 15.8 | 9.607 | 0.146 | 1041.9 | 14.8 | 9.598 | 0.136 | |
| NH3 | 1037.5 | 12.8 | 9.638 | 0.119 | 1037.0 | 12.8 | 9.643 | 0.119 | - | - | - | - | |
| H2O:CO2 | - | - | - | 1039.4 | 13.6 | 9.629 | 0.126 | - | - | - | - | ||
| 4 comp | - | - | - | - | - | - | - | - | 1040.4 | 10.7 | 9.612 | 0.099 | |
| 80 | Pure ice | 1041.1 | 17.5 | 9.605 | 0.162 | - | - | - | - | - | |||
| H2O | 1040.4 | 12.4 | 9.612 | 0.115 | 1039.9 | 11.3 | 9.616 | 0.104 | 1039.0 | 14.1 | 9.625 | 0.130 | |
| CO2 | 1039.9 | 11.6 | 9.616 | 0.107 | 1036.1 | 9.2 | 9.652 | 0.086 | - | - | - | - | |
| NH3 | 1037.5 | 12.6 | 9.638 | 0.117 | 1037.0 | 12.5 | 9.643 | 0.117 | - | - | - | - | |
| H2O:CO2 | - | - | - | - | 1039.0 | 12.8 | 9.621 | 0.119 | - | - | - | - | |
| 4 comp | - | - | - | - | - | - | - | - | 1040.4 | 10.4 | 9.612 | 0.096 | |
| 100 | Pure ice | 1036.1* | - | 9.652 | 0.102 | - | - | - | - | - | |||
| 1040.2* | 15.07 | 9.613 | 0.139 | - | - | - | - | - | - | ||||
| 1048.4* | - | 9.539 | 0.037 | - | - | - | - | - | - | ||||
| H2O | 1039.4 | 12.2 | 9.621 | 0.113 | 1040.4 | 11.7 | 9.612 | 0.108 | 1038.5 | 13.9 | 9.629 | 0.129 | |
| CO2 | 1040.4 | 14.8 | 9.612 | 0.137 | - | - | - | - | - | - | - | - | |
| NH3 | 1039.9 | 13.1 | 9.616 | 0.121 | - | - | - | - | - | - | - | - | |
| H2O:CO2 | - | - | - | - | 1039.0 | 13.1 | 9.621 | 0.121 | - | - | - | - | |
| 4 comp | - | - | - | - | - | - | - | 1039.9 | 9.9 | 9.616 | 0.091 | ||
| 120 | Pure ice | 1036.1 | 2.11 | 9.652 | 0.020 | - | - | - | - | - | - | - | - |
| 1039.9 | 2.45 | 9.616 | 0.022 | - | - | - | - | - | - | - | - | ||
| 1048.1 | 2.35 | 9.541 | 0.021 | - | - | - | - | - | - | - | - | ||
| H2O | 1039.9 | 12.3 | 9.616 | 0.114 | 1040.4 | 11.8 | 9.612 | 0.109 | 1035.6 | 12.9 | 9.656 | 0.120 | |
| NH3 | 1036.1* | 7.3 | 9.652* | 0.0684 | - | - | - | - | - | - | - | - | |
| 1040.0* | - | 9.616* | - | - | - | - | - | - | - | - | - | ||
| 1048.1 | 3.02 | 9.541 | 0.027 | - | - | - | - | - | - | - | - | ||
| H2O:CO2 | - | - | - | - | 1038.5 | 14.4 | 9.621 | 0.134 | - | - | - | - | |
| 4 comp | - | - | - | - | - | - | - | - | 1040.9 | 8.2 | 9.607 | 0.075 | |
| 140 | Pure ice | 1036.3 | 2.3 | 9.650 | 0.022 | - | - | - | - | - | - | - | |
| 1039.9 | 2.7 | 9.616 | 0.025 | - | - | - | - | - | - | ||||
| 1047.6 | 2.54 | 9.545 | 0.023 | - | - | - | - | - | - | ||||
| 1036.1* | 6.3 | 9.652 | 0.059 | 1036.1* | 7.3 | 9.652* | 0.068 | - | - | - | - | ||
| 1040.0* | - | - | 1039.9* | - | 9.616* | - | - | - | - | - | |||
| 1047.6 | 3.2 | 9.545 | 0.029 | 1047.6 | 3.6 | 9.545 | 0.033 | - | - | - | - | ||
| H2O:CO2 | - | - | - | - | 1036.1 | 7.0 | 9.652 | 0.065 | - | - | - | - | |
| - | - | - | - | 1047.6 | 3.5 | 9.545 | 0.032 | - | - | - | - | ||
| 4 comp | - | - | - | - | - | - | - | - | - | - | - | - | |
| 150 | Pure ice | 1038.0 | 6.9 | 9.634 | 0.064 | - | - | - | - | - | - | - | - |
| 1039.7 | - | 9.618 | - | - | - | - | - | - | - | - | |||
| 1047.4 | 2.8 | 9.547 | 0.025 | - | - | - | - | - | - | - | |||
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