N2O

Rotational and centrifugal distortion constants *

Isotopic
Species
Vib. State a
υ1 υ2 υ3
Bυ
[MHz]
Dυ
[MHz]
Hυ
[MHz]
Ref.
14N14N16O 0 00 0 12 561.6348(21) 5.2808(61) +0.0008(57) 76028
1 00 0 12 458.1706 5.17   75018
0 11c 0 12 566.6411(21) 5.3539(61) +0.0057(57) 76028
0 11d 0 12 590.3906(21) 5.4002(61) +0.0197(57)
0 20 0 12 588.8913(21) 7.4403(61) +0.0825(57)
0 22c 0 12 595.0614(21) 3.6281(61) -0.0702(57)
0 22d 0 12 595.0692(21) 5.4482(61) +0.0029(57)
0 31c 0 12 578.8241(68) 6.340(19) +0.039(18)
0 31d 0 12 623.6200(68) 6.494(19) -0.035(18)
0 33 0 12 611.2577(72) 4.742(20) -0.102(18)
0 00 1 12 508.9923(31) 5.1726(86) +0.0018(77)
0 11c 1 12 515.270(15) 5.233(38) -0.001(33)
0 11d 1 12 542.493(15) 5.120(38) -0.023(33)
14N15N16O 0 00 0 12 560.7310(21) 5.2682(61) -0.0081(57)
0 11c 0 12 564.5298(99) 5.319(27) -0.021(24)
0 11d 0 12 588.8168(68) 5.368(19) -0.003(18)
15N14N16O 0 00 0 12 137.3103(22) 4.8896(57) -0.0113(49)
0 11c 0 12 142.711(10) 4.960(25) -0.004(20)
0 11d 0 12 164.996(10) 4.972(25) -0.016(20)
15N15N16O 0 00 0 12 137.40(3) 5.2 b   49009
14N14N17O 0 00 0 12 191.719(10) 4.987(25) -0.004(20) 76028
14N14N18O 0 00 0 11 859.1097(22) 4.7274(57) -0.0119(49)
0 11c 0 11 864.545(10 4.772(25) -0.020(20)
0 11d 0 11 885.913(15) 4.857(36) +0.023(28)

* For a detailed analysis of the -doubling and Fermi resonances in N2O see [76028] and the results in the tables:
Molecular constants for 14N216O and
Molecular constants for 14N15N16O,   15N14N16O, and 14N218O.

a With the exception of the (0, 22, 0) state the c and d labels associated with the quantum number correlate with the L (lower) and U (upper) labels, respectively, in the table: Microwave spectrum of N2O, while the reverse correlation holds for the (0, 22, 0) c and d states.

b Assumed value.

Molecular constants for 14N216O

Parameters Value Ref. Parameters Value Ref.
B0 [MHz] 12 561.6369(9) 76028 a q(010) [MHz] 11.872 12(27) 76028 a
α1* [MHz] b 58.786 78(86) q1 [MHz] 0.253(23)
α2* [MHz] b -17.036 55(35) q2 [MHz] 0.0379(56)
γ12 [MHz] -0.414 72(42) qJ [Hz] -15.68(38)
γ22 [MHz] -0.170 87(14) qJJ [Hz] c
γ [MHz] c ρ [Hz] -0.86(15)
D0 [kHz] 5.2869(24) g [GHz] 16.79(83)
β1 [kHz] -0.051 53(92) Δ1 [THz] 2.9604
β2 [kHz] -0.083 03(35) Δ2 [THz] 2.9360
H0 [Hz] 0.0061(22) K(100)122 [THz] 1.3221(87)
  λ2 [THz] -0.0123(24)
λJ [MHz] -2.58(18)

a All experimental measurements from [76028], except for the (0, 33 0) state, were included in the analysis. The values of Δ1 and Δ2 were determined from infrared data.

b Here   α1* = α1 - 2γ11 - 2γ12 - γ13   and   α2* = α2 - γ12 - 2γ22 - γ23.

c The condition γ = qJJ = 0 was employed.


Molecular constants for 14N15N16O,   15N14N16O, and 14N218O

Parameters 14N15N16O Value 15N14N16O Value 14N218O Value Ref.
B0 [MHz] 12 560.7310(19) 12 137.3104(20) 11 859.1100(21) 76028 
α1** [MHz] a -15.9332(14) -16.5321(14) -16.1024(17)
D0 [kHz] 5.2680(57) 4.8898(54) 4.7280(55)
β2 [kHz] -0.0802(18) -0.0748(16) -0.0698(19)
H0 [Hz] -0.0083(53) -0.0112(45) -0.0114(47)
q(010) [MHz] 12.1398(13) 11.1457(13) 10.6723(15)
qJ [kHz] -0.0142(17) -0.0140(15) -0.0145(17)

a This parameter is defined as   α2** = α2 - γ12 - 2γ22 - γ23 - γ.

 

Hyperfine and Zeeman constants and electric dipole moment for N2O

Parameters 14N14N16O Ref. 15N14N16O Ref. 15N15N16O Ref.
eQq (outer 14N) [MHz] -0.7767(10) 75000    
eQq (inner 14N) [MHz] -0.2694(18) -0.27 47008
M (outer) [kHz] -2.35(20)  
M (inner) [kHz] -2.90(26)
g (µN)   0.076 06(10) 69038
χ - χ|| (erg/G2) 1.68(2)  10-29
µ [C · m]
     µ [D]
0.536 47(5)  10-30 
     0.160 830(16)
70029 0.554(7)  10-30 
     0.166(2)
50006  
α (Å3) 3.222(46)  
Additional references: [48005], [49008], [51008], [51009], [51013], [55009], [59007], [59011], [61010], [64006], [66027], [68009], [68015], [68016], [68035], [71027], and [74015].


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