TABLE I
Observed P -branch line intensities and frequencies from low-pressure methane ν 3 -band spectra.a
Assignment Frequencies (vacuum cm−1 ) for 12 CH4 J BSHP BF Intensity (cm−1 Torr−1 ) BSHP PI HHAV TDPGA PII
± 0.002 ± 0.003 ± 0.002 ± 0.0010 ± 0.0005 ± 0.0005 P (1)F 2(1)F 1(0)0.054 3009.006 0.006* 0.0121 ⋯ 0.0105 P (2)E (1)E (0)0.100 2999.063 0.063* 0.0610 ⋯ 0.0590 F 2(1)F 2(0)0.150 2998.997 0.995 0.9949 ⋯ 0.9936 P (3)F 2(1)F 1(0)0.211 2989.035 0.038 0.0334 0.0335 0.0334 F 1(1)F 2(0)0.210 2988.936 0.936* 0.9334 0.9324 0.9321 A 1(1)A 2(0)0.343 2988.797 0.796 0.7956 ⋯ 0.7942 P (4)A 1(1)A 1(0)0.399 2979.009 0.011 0.0118 ⋯ 0.0115 F 1(1)F 1(0)0.237 2978.917 0.917 0.9201 0.9201 0.9193 E (1)E (0)0.159 2978.844 0.844* 0.8482 0.8480 0.8475 F 2(1)F 2(0)0.237 2978.647 0.645 0.6510 0.6506 0.6497 P (5)F 2(1)F 1(0)0.235 2968.855 0.857 0.8561 0.8552 0.8549 F 1(1)F 2(0)0.236 2968.736 0.736* 0.7382 ⋯ 0.7415 E (1)E (0)0.156 2968.472 0.469 0.4745 0.4733 0.4739 F 2(2)F 1(1)0.234 2968.402 0.399 0.4048 0.4035 0.4034 P (6)E (1)E (0)0.139 2958.685 0.685 0.6660 0.6823 0.6818 F 2(1)F 2(1)0.206 2958.654 0.654 0.6660 0.6505 0.6502 A 2(1)A 2(0)0.349 2958.540 0.540 0.5374 ⋯ 0.5363 F 2(2)F 2(0)0.203 2958.236 0.236* 0.2340 0.2330 0.2324 F 1(1)F 1(0)0.206 2958.124 0.124 0.1220 0.1200 0.1194 A 1(1)A 1(0)0.344 2958.020 0.016 0.0183 0.0170 0.0167 P (7)F 2(1)F 1(0)0.171 2948.477 0.479 0.4731 0.4741 0.4744 F 1(1)F 2(0)0.170 2948.425 0.425 0.4224 0.4215 0.4217 A 1(1)A 2(0)0.282 2948.112 0.112* 0.1087 0.1084 0.1086 F 1(2)F 2(1)0.169 2947.914 0.910 0.9116 0.9120 0.9121† E (1)E (0)0.113 2947.812 0.811 0.8106 0.8112 0.8113 F 2(2)F 1(1)0.171 2947.670 0.666 0.6685 0.6674 0.6686 P (8)A 1(1)A 1(0)0.215 2938.256 0.261 0.2514 0.2521 0.2519 F 1(1)F 1(1)0.128 2938.219 0.224 0.2073 ⋯ 0.2150 E (1)E (1)0.086 2938.196 0.201 0.2073 ⋯ 0.1938 F 2(1)F 2(1)0.124 2937.773 0.773* 0.7677 0.7672 0.7675 F 1(2)F 1(0)0.126 2937.499 0.499 0.4954 0.4940 0.4946 E (2)E (0)0.085 2937.310 0.313 0.3080 0.3071 0.3085 F 2(2)F 2(0)0.127 2937.236 0.237 0.2353 0.2343 0.2346 P (9)F 2(1)F 1(0)0.092 2927.964 0.967 0.9632 ⋯ 0.9647 F 1(1)F 2(0)0.091 2927.932 0.937 0.9364 ⋯ 0.9327 E (1)E (0)0.060 2927.429 0.429* 0.4305 0.4288 0.4292 F 2(2)F 1(1)0.089 2927.372 0.372 0.3739 0.3724 0.3728 A 2(1)A 1(0)0.150 2927.076 0.073 0.0777 0.0767 0.0769 F 2(3)F 1(2)0.089 2926.885 ⋯ 0.8855 0.8849 0.8855 F 1(2)F 2(1)0.090 2926.783 ⋯ 0.7842 0.7831 0.7832 A 1(1)A 2(0)0.151 2926.701 ⋯ 0.7016 0.7005 0.7010 P (10)E (1)E (1)0.043b 2917.668 0.673 0.6524 ⋯ 0.6618 F 2(1)F 2(2)0.062b 2917.660 0.664 0.6524 ⋯ 0.6528 A 2(1)A 2(0)0.102 2917.636 0.641 0.6359 0.6285 0.6290 F 2(2)F 2(1)0.059 2917.074 0.074* 0.0676 0.0660 0.0661 F 1(1)F 1(1)0.058 2916.973 0.975 0.9676 0.9661 0.9662 A 1(1)A 1(0)0.098 2916.756 0.762 0.7556 0.7546 0.7539 F 1(2)F 1(0)0.059 2916.398 ⋯ 0.3977 0.3967 0.3965 E (2)E (0)0.040 2916.303 ⋯ 0.3039 0.3036 0.3021 F 2(3)F 2(0)0.060 2916.202 ⋯ 0.2028 0.2019 0.2025
a BSHP, Ref.
4 ; BF, Ref.
14 ; PI, Ref.
2 ; HHAV, Ref.
5 ; TDPGA, Ref.
3 ; PII, present work; ±, relative rms errors.
b Blended;
* bench mark lines referenced to BSHP;
† standard line from Ref.
7 .
TABLE II
Observed Q -branch line intensities and frequencies from low-pressure methane ν 3 -band spectra.a
Assignment Frequencies (vacuum cm−1 ) for 12 CH4 J BSHP BF Intensity (cm−1 Torr−1 ) BSHP PI HHAV TDPGA PII ± 0.002 ± 0.003 ± 0.002 ± 0.0010 ± 0.0005 ± 0.0005 Q (1)F 2(1)F 1(0)0.169 3018.825 0.8250 ⋯ 0.8240 Q (2)E (1)E (0)0.169 3018.593 0.5921 ⋯ 0.5911 F 2(1)F 2(0)0.248 3018.652 0.6520 0.6501 0.6508 Q (3)F 2(1)F 1(0)0.303 3018.245 0.2426 0.2420 0.2415 F 1(1)F 2(0)0.303 3018.362 0.3594 0.3588 0.3587 A 1(1)A 2(0)0.509 3018.531 0.5290 ⋯ 0.5291 Q (4)A 1(1)A 1(0)0.530 3017.718 0.7119 ⋯ 0.7117 F 1(1)F 1(0)0.328 3017.826 0.8208 0.8153 0.8149 E (1)E (0)0.209 3017.891 0.8864 0.8855 0.8863 F 2(1)F 2(0)0.319 3018.209 0.2067 0.2054 0.2059 Q (5)F 2(1)F 1(0)0.298 3017.170 0.1635 0.1632 0.1632 F 1(1)F 2(0)0.295 3017.274 0.2668 0.2664 0.2661 E (1)E (0)0.200 3017.769 0.7630 0.7629 0.7631 F 2(2)F 1(1)0.314 3017.826 0.8208 0.8252 0.8243 Q (6)E (1)E (0)0.173 3016.463 0.4603 0.4581 0.4580 F 2(1)F 2(1)⋯ 3016.500 0.4943 ⋯ 0.4890b A 2(1)A 2(0)0.430 3016.571 0.5662 0.5656 0.5644 F 2(2)F 2(0)0.257 3017.235 0.2289 0.2279 0.2268 F 1(1)F 1(0)0.261 3017.353 0.3463 0.3456 0.3453 A 1(1)A 1(0)0.440 3017.474 0.4672 ⋯ 0.4664 Q (7)F 2(1)F 1(0)0.212 3015.644 0.6366 0.6417 0.6410 F 1(1)F 2(0)0.207 3015.685 0.6842 0.6824 0.6815 A 1(1)A 2(0)0.384b 3016.500 0.4943 0.4964 0.4964 F 1(2)F 2(1)0.206 3016.646 0.6412 0.6404 0.6392 E (1)E (0)0.139 3016.739 0.7341 0.7330 0.7327 F 2(2)F 1(1)0.211 3016.946 0.9285 0.9394 0.9384 Q (8)A 1(1)A 1(0)0.264 3014.713 0.7158 0.7117 0.7113 F 1(1)F 1(1)0.158 3014.737 0.7385 0.7350 0.7353 E (1)E (1)0.107 3014.747 0.7385 0.7460 0.7468 F 2(1)F 2(1)0.163 3015.814 0.8110 0.8145 0.8142 F 1(2)F 1(0)0.154 3015.992 0.9897 0.9893 0.9882 E (2)E (0)0.106 3016.306 0.3027 0.3015 0.3010 F 2(2)F 2(0)0.159 3016.374 0.3702 0.3688 0.3681 Q (9)F 2(1)F 1(0)0.112 3013.711 0.7182 0.7111 0.7113 F 1(1)F 2(0)0.111 3013.724 0.7182 0.7235 0.7241 E (1)E (0)0.071 3015.001 0.0010 0.0013 0.0011 F 2(2)F 1(1)0.108 3015.051 0.0516 0.0505 0.0505 A 2(1)A 1(0)0.180 3015.203 0.2040 0.2029 0.2031 F 2(3)F 1(2)0.110 3015.592 0.5884 0.5907 0.5904 F 1(2)F 2(1)0.112 3015.709 0.7093 0.7062 0.7054 A 1(1)A 2(0)0.195 3015.806 0.8110 0.8055 0.8049 Q (10)E (1)E (1)⋯ 3012.618 0.6185 0.6185 0.6190 F 2(1)F 2(2)⋯ 3012.618 0.6185 0.6185 0.6190 A 2(1)A 2(0)0.168b 3012.618 0.6185 0.6186 0.6190 F 2(2)F 2(1)0.073 3014.098 0.0952 0.0956 0.0954 F 1(1)F 1(1)0.070 3014.174 0.1727 0.1720 0.1718 A 1(1)A 1(0)0.123 3014.644 0.6424 0.6415 0.6415 F 1(2)F 1(0)0.073 3014.839 0.8388 0.8377 0.8375 E (2)E (0)0.050 3014.942 0.9417 0.9410 0.9399 F 2(3)F 2(0)0.075 3015.091 0.0922 ⋯ 0.0906
a BSHP, Ref.
4 ; BF, Ref.
14 ; PI, Ref.
2 ; HHAV, Ref.
5 ; TDPGA, Ref.
3 ; PII, present work; ±, relative rms errors.
b Blended;
* bench mark lines referenced to BSHP.
TABLE III
Observed R -branch line intensities and frequencies from low-pressure methane ν 3 -band spectra.a
Assignment Frequencies (vacuum cm−1 ) for 12 CH4 J BSHP BF Intensity (cm−1 Torr−1 ) BSHP PI HHAV TDPGA PII
± 0.002 ± 0.003 ± 0.002 ± 0.0010 ± 0.0005 0.0005 R (0)A 1(1)A (0)0.297 3028.763 0.763* 0.7536 ⋯ 0.7528 R (1)F 2(1)F 1(0)0.286 3038.500 0.500* 0.4998 0.4987 0.4989 R (2)E (1)E (0)0.239 3048.171 0.171* ⋯ 0.1692 0.1702 F 2(1)F 2(0)0.364 3048.154 0.155 0.1578 ⋯ 0.1533 R (3)F 2(1)F 1(0)0.404 3057.760 0.760* 0.7610 0.7609 0.7606 F 1(1)F 2(0)0.402 3057.726 0.725 0.7276 ⋯ 0.7268 A 1(1)A 2(0)0.680 3057.687 0.687 0.6880 ⋯ 0.6878 R (4)A 1(1)A 1(0)0.671 3067.300 0.300 0.3007 0.3008 0.2999 F 1(1)F 1(0)0.401 3067.260 0.260* 0.2614 0.2612 0.2603 E (1)E (0)0.270 3067.234 0.232 0.2363 0.2342 0.2330 F 2(1)F 2(0)0.405 3067.163 0.162 0.1649 ⋯ 0.1645 R (5)F 2(1)F 1(0)0.372 3076.720 0.720 0.7260 0.7255 0.7255 F 1(1)F 2(0)0.370 3076.671 0.671* 0.6766 0.6770 0.6773 E (1)E (0)0.251 3076.563 0.561 0.5650 0.5689 0.5689 F 2(2)F 1(1)0.372 3076.543 0.542 0.5535 ⋯ 0.5488 R (6)E (1)E (0)0.202 3086.080 0.083 0.0769 ⋯ 0.0856 F 2(1)F 2(1)0.320 3086.065 0.068 0.0769 0.0717 0.0708 A 2(1)A 2(0)0.526 3086.027 0.027* 0.0323 0.0305 0.0305 F 2(2)F 2(0)0.318 3085.890 0.889 0.8944 0.8933 0.8933 F 1(1)F 1(0)0.319 3085.858 0.857 0.8613 ⋯ 0.8598 A 1(1)A 1(0)0.537 3085.830 0.828 0.8341 ⋯ 0.8318 R (7)F 2(1)F 1(0)0.251 3095.375 0.378 0.3671 0.3709 0.3707 F 1(1)F 2(0)0.250 3095.354 0.357 0.3548 0.3510 0.3506 A 1(1)A 2(0)0.424 3095.183 0.183* 0.1801 0.1794 0.1795 F 1(2)F 2(1)0.255 3095.134 0.134 0.1314 0.1307 0.1306 E (1)E (0)0.171 3095.107 0.107 0.1049 0.1041 0.1032 F 2(2)F 1(1)0.254 3095.064 0.063 0.0620 ⋯ 0.0594 R (8)A 1(1)A 1(0)0.321 3104.591 0.584 0.5792 0.5850 0.5867 F 1(1)F 1(1)0.251b 3104.578 0.572 0.5792 0.5732 0.5730 E (1)E (1)⋯ 3104.578 0.572 0.5792 ⋯ 0.5730 F 2(1)F 2(1)0.190 3104.333 0.333* 0.3371 0.3365 0.3366 F 1(2)F 1(0)0.189 3104.280 0.281 0.2863 0.2838 0.2841 E (2)E (0)0.129 3104.218 0.214 0.2118 ⋯ 0.2203 F 2(2)F 2(0)0.192 3104.204 0.200 0.2118 ⋯ 0.2055 R (9)F 2(1)F 1(0)0.225b 3113.708 0.709 0.7098 0.7098 0.7100 F 1(1)F 2(0)⋯ 3113.708 0.709 0.7098 0.7098 0.7100 E (1)E (0)0.096 3113.422 0.425 0.4220 ⋯ 0.4270 F 2(2)F 1(1)0.132 3113.414 0.415 0.4220 0.4184 0.4175 A 2(1)A 1(0)0.222 3113.378 0.378* 0.3793 0.3802 0.3794 F 2(3)F 1(2)0.129 3113.299 0.298 0.2987 ⋯ 0.3007 F 1(2)F 2(1)0.136 3113.277 0.275 0.2828 ⋯ 0.2794 A 1(1)A 2(0)0.226 3113.258 0.257 0.2670 ⋯ 0.2612 R (10)E (1)E (1)⋯ 3122.766 0.770 0.7642 0.7640 0.7630 F 2(1)F 2(2)⋯ 3122.766 0.770 ⋯ 0.7640 0.7630 A 2(1)A 2(0)0.283b 3122.766 0.770 ⋯ 0.7640 0.7630 F 1(1)F 2(1)0.137b 3122.444 0.444* 0.4424 ⋯ 0.4422 F 2(2+)⋯ 3122.444 0.444 ⋯ ⋯ 0.4422 F 2(2)F 1(1)0.021 3122.370 0.370 0.3670 ⋯ 0.3676 F 1(2−)⋯ 3122.370 0.370 ⋯ ⋯ 0.3676 F 1(1+)⋯ 3122.370 0.370 ⋯ ⋯ 0.3676 A 1(1)A 1(0)0.149b 3122.333 0.335 0.3321 0.3318 0.3315 F 2(3)⋯ 3122.333 0.335 ⋯ 0.3318 0.3315 F 1(2)F 1(0)0.076b 3122.295 0.299 ⋯ ⋯ 0.2962 E (2)E (0)0.062b 3122.285 0.288 0.2908 ⋯ 0.2852 F 2(3−)F 2(0)0.088 3122.258 0.261 0.2586 ⋯ 0.2577
a BSHP, Ref.
4 ; BF Ref.
14 ; PI, Ref.
2 ; HHAV, Ref.
5 ; TDPGA, Ref.
3 ; PII, present work; ±, relative rms errors.
b Blended
* bench mark lines referenced to BSHP.