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Table 1

Selection of observed transition frequencies of CH2NH and its isotopologs around 1500 GHz.

Species Frequencya obs. calc.a

CH2NH 44 0 ← 33 1 1 404 238.028(70)b 0.140
54 2 ← 43 1 1 468 185.402(70) 0.007
54 1 ← 43 2 1 468 199.075(70) 0.023
125 7 ← 124 8 1 471 199.202(70) 0.012
125 8 ← 124 9 1 471 499.403(70) 0.027
95 4 ← 94 5 1 473 861.534(70) 0.018
95 5 ← 94 6 1 473 892.068(70) 0.014
85 3 ← 84 4 1 474 356.250(70) 0.024
85 4 ← 84 5 1 474 367.926(70) 0.089
113 9 ← 102 8 1 484 492.817(70) 0.011
123 10 ← 112 9 1 532 209.417(70) 0.076
113 8 ← 102 9 1 548 586.974(70) 0.002
133 11 ← 122 10 1 576 363.188(70) 0.010

13CH2NH 212 19 ← 202 18 1 352 287.798(70) 0.012
221 21 ← 211 20 1 357 924.664(70) 0.046
44 1 ← 33 0 1 403 358.349(70) 0.052
44 0 ← 33 1 1 403 359.871(70) 0.096
113 9 ← 102 8 1 474 883.686(70) 0.022
145 9 ← 144 10 1 475 381.288(70) 0.058
145 10 ← 144 11 1 476 200.023(70) 0.039
135 9 ← 134 10 1 477 506.681(70) 0.015
125 7 ← 124 8 1 478 359.598(70) 0.083
115 6 ← 114 7 1 479 383.508(70) 0.023
115 7 ← 114 8 1 479 506.536(70) 0.022
105 5 ← 104 6 1 480 174.884(70) 0.010
105 6 ← 104 7 1 480 232.612(70) 0.001
95 4 ← 94 5 1 480 778.809(70) 0.070
95 5 ← 94 6 1 480 803.406(70) 0.177
123 10 ← 112 9 1 522 368.746(70) 0.126
64 3 ← 53 2 1 528 120.333(70) 0.016
64 2 ← 53 3 1 528 167.416(70) 0.024
133 11 ← 122 10 1 566 486.726(70) 0.011

CHNH 223 20 ← 213 19 1 372 963.250(70) 0.039
226 17 ← 216 16 1 376 401.678(70) 0.044
226 16 ← 216 15 1 376 428.341(70) 0.061
225 18 ← 216 17 1 379 173.653(70) 0.043
225 17 ← 216 16 1 379 791.274(70) 0.082
224 18 ← 214 17 1 389 424.015(70) 0.017
214 20 ← 201 19 1 392 881.468(70) 0.081
240 24 ← 231 23 1 401 369.234(70) 0.042
241 24 ← 231 23 1 403 565.546(70) 0.034
240 24 ← 230 23 1 404 280.946(70) 0.010
241 23 ← 232 22 1 407 122.642(70) 0.042
231 22 ← 221 22 1 413 143.255(70) 0.037
225 18 ← 224 19 1 455 861.400(70) 0.046
242 23 ← 232 22 1 457 357.254(70) 0.000
250 25 ← 241 24 1 459 068.714(70) 0.032
75 2 ← 74 3 1 477 594.406(70) 0.073
75 3 ← 74 4 1 477 597.522(70) 0.060
55 ← 54 1 478 001.450(70) 0.064
244 21 ← 234 20 1 507 131.016(70) 0.009
252 24 ← 242 23 1 515 322.641(70) 0.024
242 23 ← 231 22 1 519 421.807(70) 0.061
244 20 ← 234 19 1 520 980.865(70) 0.007

CH2ND 84 5 ← 73 4 1 365 724.764(70) 0.002
84 4 ← 73 5 1 366 494.752(70) 0.014
94 6 ← 83 5 1 423 367.321(70) 0.009
94 5 ← 83 6 1 425 064.589(70) 0.012
55 ← 44 1 446 408.397(70) 0.077
104 7 ← 93 6 1 480 328.684(70) 0.017
104 6 ← 93 7 1 483 724.746(70) 0.009
114 8 ← 103 7 1 536 302.549(70) 0.000
114 7 ← 103 8 1 542 599.447(70) 0.012
75 3 ← 64 2 1 563 606.214(70) 0.031
75 2 ← 64 3 1 563 609.067(70) 0.105

Notes. Hyperfine splitting due to the nitrogen nucleus is not resolved for the tabulated lines. See text for the detail.

(a)

Units are in MHz.

(b)

Experimental frequency accuracy in the present study.

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