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Table 1.
Spectroscopic parameters Xa (MHz) and their differences ΔXb (MHz) of cyanamide isotopologs.
| Parameter |  NCN |
H2NC15N | H2N13CN | H2NCN |
|---|---|---|---|---|
| ΔE | 1460174. (120) | 1486116. (118) | 1486522. (66) | 1486004.275 (185) |
| Fac | 342.505 (46) | 335.828 (47) | 345.963 (59) | 346.5304 (245) |
 |
−1.442 | −1.415 | −1.457 | −1.4577 (40) |
 |
1.2756 (113) | 1.1048 (119) | 1.2514 (108) | 1.2009 (89) |
 |
−48.69 | −47.52 | −50.54 | −50.57 (155) |
 |
10.64 | 10.32 | 11.34 | 11.36 (48) |
| A | 307819.7 (241) | 308328.7 (239) | 308205.1 (122) | 308298.054 (66) |
| ΔA/2 | −3838.00 | −3844.35 | −3842.81 | −3843.971 (33) |
| B | 9845.11174 (75) | 9794.54528 (82) | 10117.07868 (93) | 10121.205258 (188) |
| ΔB/2 | −8.74933 (71) | −8.09439 (79) | −8.56394 (93) | −8.551540 (113) |
| C | 9604.18856 (76) | 9555.59774 (79) | 9862.34933 (114) | 9866.291773 (186) |
| ΔC/2 | −0.28904 (77) | −0.26534 (81) | −0.35051 (110) | −0.368180 (109) |
| DK | 36.036 | 36.110 | 36.070 | 36.0421 (44) |
| ΔDK/2 | −8.084 | −8.101 | −8.092 | −8.0857 (33) |
| DJK × 103 | 368.428 (80) | 357.939( 80) | 377.325 (101) | 377.705 (40) |
| ΔDJK/2 × 103 | −19.239 (44) | −17.766 (42) | −18.097 (83) | −18.494 (26) |
| DJ × 103 | 3.59457 (39) | 3.50397 (38) | 3.75968 (31) | 3.759689 (180) |
| ΔDJ/2 × 103 | 0.01490 (34) | 0.01741 (32) | 0.01813 (26) | 0.018511 (49) |
| d1 × 106 | −126.84 (48) | −117.29 (49) | −129.70 (36) | −130.2699 (176) |
| Δd1/2 × 106 | 8.89 (47) | 9.37 (49) | 10.88 (36) | 10.5633 (225) |
| d2 × 106 | −25.100 (283) | −23.484 (304) | −27.739 (219) | −27.2965 (45) |
| Δd2/2 × 106 | 4.931 (150) | 4.062 (206) | 5.516 (165) | 5.2987 (43) |
| HK × 103 | 10.76 | 10.79 | 10.77 | 10.760 (84) |
| ΔHK/2 × 103 | −6.45 | −6.47 | −6.46 | −6.453 (78) |
| HKJ × 106 | −219.2 (50) | −267.7 (48) | −196.2 (45) | −264.41 (234) |
| ΔHKJ/2 × 106 | 71.6 (12) | 70.6 (10) | 82.3 (7) | 73.64 (180) |
| HJK × 106 | 0.889 (73) | 1.115 (70) | 0.945 (44) | 1.0798 (167) |
| ΔHJK/2 × 106 | −0.250 (27) | −0.268 (23) | −0.297 (11) | −0.2879 (65) |
| HJ × 109 | −0.761 | −0.750 | −0.825 | −0.826 (77) |
| ΔHJ/2 × 109 | 0.189 | 0.186 | 0.204 | 0.205 (9) |
| LK × 106 | 16.00 | 16.07 | 16.04 | 16.01 |
| ΔLK/2 × 106 | −5.31 | −5.34 | −5.32 | −5.32 |
| LKKJ × 106 | −4.118 (88) | −3.439 (82) | −5.800 (54) | −3.681 (46) |
| ΔLKKJ/2 × 106 | 0.343 | 0.343 | 0.353 | 0.353 (39) |
| LJK × 109 | 17.78 (223) | 10.10 (199) | 17.44 (94) | 12.47 (42) |
| rms | 0.040 | 0.037 | 0.043 | 0.098 |
| σb | 0.82 | 0.86 | 0.98 | 0.94 |
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