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Table 1

Rotational transition frequencies and spectroscopic constants of 15N2H+ and 15N2D+.

15N2H+ 15N2D+

J + 1 J Observed Obs.-calc. Uncert.a A b Observed Obs.-calc. Uncert.a A b
(MHz) (kHz) (kHz) (s-1) (MHz) (kHz) (kHz) (s-1)

1 0 88 264.0580 1.1 0.3 3.08(5) 73 635.4710c 0.3 1.79(5)
2 1 176 526.2210c 0.6 2.96(4) 147 269.6072c 0.5 1.72(4)
3 2 264 784.5878 0.8 0.8 1.07(3) 220 901.0740c 0.7 6.22(4)
4 3 353 037.2641 0.6 0.9 2.63(3) 294 528.5363 0.3 0.8 1.53(3)
5 4 441 282.3524c 0.9 5.26(3) 368 150.6609 0.3 0.9 3.05(3)
6 5 529 517.9570 2.2 0.8 9.22(3) 441 766.1115c 0.9 5.35(3)
7 6 617 742.1767 1.3 0.8 1.48(2) 515 373.5533 1.9 0.8 8.60(3)
8 7 705 953.1169 0.7 0.9 2.23(2) 588 971.6577 0.0 0.8 1.29(2)
9 8 794 148.8830 2.4 1.1 3.19(2) 662 559.0842 0.9 0.7 1.85(2)
10 9 882 327.5827c 1.3 4.40(2) 736 134.5064 2.2 0.8 2.56(2)
11 10 970 487.3141c 1.3 5.88(2) 809 696.5838 2.0 1.0 3.42(2)
12 11 1 058 626.1863 2.0 1.1 7.66(2) 883 243.9851c 1.2 4.45(2)
13 12 1 146 742.2976 1.0 1.5 9.77(2) 956 775.3817c 1.3 5.67(2)
14 13 1 234 833.7625c 1.5 1.22(1) 1 030 289.4371 2.8 1.2 7.10(2)
15 14 1 103 784.8281c 1.2 8.76(2)
16 15 1 177 260.2165 1.0 1.7 1.06(1)
17 16 1 250 714.2716c 3.2 1.28(1)
rmsd = 1.5 kHz rmsd = 1.6 kHz

Constant Valuee Correlation matrix Valuee Correlation matrix

B0/MHz 44 132.18765(17)   1.000 36 817.84672(13)   1.000
DJ/kHz 79.0502(20)   0.934   1.000 55.6152(10)   0.931   1.000
HJ/mHz 50.4(63)   0.871   0.986   1.000 50.7(22)   0.860   0.982   1.000

Notes.

(a)

Uncertainties derived from the errors on the fitted spectroscopic parameters.

(b)

The order of magnitude is reported in parentheses.

(c)

Predicted value.

(d)

Root-mean-square error of the residuals: .

(e)

Standard errors are reported in parentheses in units of the last quoted digit.

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