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Selenium nitride


Constants of diatomic molecules

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Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.

Data compiled by: Klaus P. Huber and Gerhard H. Herzberg

Data collected through May, 1977

Symbols used in the table of constants
SymbolMeaning
State electronic state and / or symmetry symbol
Te minimum electronic energy (cm-1)
ωe vibrational constant – first term (cm-1)
ωexe vibrational constant – second term (cm-1)
ωeye vibrational constant – third term (cm-1)
Be rotational constant in equilibrium position (cm-1)
αe rotational constant – first term (cm-1)
γe rotation-vibration interaction constant (cm-1)
De centrifugal distortion constant (cm-1)
βe rotational constant – first term, centrifugal force (cm-1)
re internuclear distance (Å)
Trans. observed transition(s) corresponding to electronic state
ν00 position of 0-0 band (units noted in table)
Diatomic constants for 14N80Se
StateTeomegaeomegaexeomegaeyeBealphaegammaeDebetaereTrans.nu00
C 2Delta5/2 (34650) DeltaG(3/2) = 738.32   B2 = 0.4410   2.5E-6 (D2)   C rarrow X2 1 R nu(1-0) = 34431.48 Z
Jenouvrier, Daumont, et al., 1970; missing citation; missing citation
     B1 = 0.4568   0.01E-6 D1   C rarrow X2 1 R 34431.48 Z
Jenouvrier, Daumont, et al., 1970; missing citation; missing citation
B 2Sigma(-) (34400) 2   [0.4503] 3   [2.8E-6]  [1.7725] B rarrow X2 R 33431.21 Z
Yee and Jones, 1971; missing citation
           B rarrow X1 4 R 34322.03 Z
Yee and Jones, 1971; missing citation
StateTeomegaeomegaexeomegaeyeBealphaegammaeDebetaereTrans.nu00
b (4Sigma-1/2) (24840) [766] H   [0.4407] 5     [1.7917] b rarrow X1 6 R 24744.3 H
Daumont, Jenouvrier, et al., 1976
A2 2Pi3/2 (24800) [612.5] Z 7  [0.4173] 7  [0.67E-6]  [1.841] A2 rarrow X2 8 R 23765.4 Z
missing citation; missing citation
A1 2Pi1/2 (24350) [658.9] Z 9  [0.4117] 9  [0.60E-6]  [1.854] A1 rarrow X1 8 R 24204.0 Z
missing citation; missing citation
a (4Pii) (19700) 10 (710.7) 10 (10.3) 10  (0.361) 10 (0.002) 10    (1.980)  
StateTeomegaeomegaexeomegaeyeBealphaegammaeDebetaereTrans.nu00
X2 2Pi3/2 891.8 11 954.96 Z 5.648  0.5189 0.0040  0.65E-6  1.6518  
X1 2Pi1/2 0 956.81 Z 5.643  0.5182 12 0.0040  0.65E-6  1.6518  

Notes

1 Yee and Jones, 1971 originally assigned the v'=1 progression to a 2Pi1/2 rarrow X1 2Pi1/2 transition.
2A weak band at 2845.37 Å was assigned by Yee and Jones, 1971 to the B rarrow X1 1-0 transition, giving DeltaG'(1/2) = 804.6 Yee and Jones, 1971.
3Spin splitting constant gamma0= -0.035.
4 Jenouvrier, Daumont, et al., 1970 assigned the v'=0 progression to a 2Pi1/2 rarrow X1 2Pi1/2 transition. These authors list a number of unclassified bands in the same wavelength region.
5Calculated from the corresponding value for 15N80Se. The b state levels interact with A1 2Pi1/2, see 9.
6Two very weak v" progressions.
7Strongly perturbed state; DeltaG(3/2) = 803.8, DeltaG(5/2) = 654.4, DeltaG(7/2) = 637.7; B1 = 0.4252, B2 = 0.4164, B3 = 0.4112, B4 = 0.4069. According to Daumont, Jenouvrier, et al., 1976 the perturbing state may well be 4Sigma-3/2.
8Earlier assignments of bands belonging to these two subsystems postulated the existence of two close lying and interacting 2Pi states called A 2Pi1/2, A' 2Pi1/2, and A,A' 2Pi3/2; see Daumont, Jenouvrier, et al., 1972, also Pannetier, Goudmand, et al., 1965, Goudmand and Dessaux, 1967, Dessaux and Goudmand, 1968, Pascat, Daumont, et al., 1969, Pascat, Daumont, et al., 1970, Daumont, Jenouvrier, et al., 1970, Daumont, Jenouvrier, et al., 1970, 2, Daumont, Jenouvrier, et al., 1971, Jenouvrier, Daumont, et al., 1971. Daumont, Jenouvrier, et al., 1976 use A and A" in place of A1 and A2, respectively.
9Strongly perturbed state; DeltaG(3/2) = 615.8, DeltaG(5/2) = 695.7; B1 = 0.4096, B2 = 0.4205, B3 = 0.4093, B5 = 0.3980, B7 = 0.3920, B8 = 0.3901. Lambda-type doubling Deltanu(v=0) = 0.032(J+1/2), the sign being opposite to that in X1 2Pi1/2. For higher vibrational levels the Lambda-type doubling is irregular owing to the strong interaction with b 4Sigma-1/2.
10A ~ -25; all constants have been derived from the analysis of perturbations in the A1, A2 states of 15N80Se and 14N80Se; see Daumont, Jenouvrier, et al., 1976.
11Aeff = 890.84 as given in Harding, Jones, et al., 1971 corresponds to the difference between the two hypothetical J=0 levels.
12Lambda-type doubling Deltanu =0.043(J+1/2). The interaction (due to s-uncoupling) between the nearly degenerate levels v+1 and v of 2Pi1/2 and 2Pi3/2, respectively, leads for v = 4,5 to an anomalous Lambda-type doubling in both components Jenouvrier, Pascat, et al., 1973.

References

Go To: Top, Constants of diatomic molecules, Notes

Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.

Jenouvrier, Daumont, et al., 1970
Jenouvrier, A.; Daumont, D.; Pascat, B., Analyse vibrationnelle de trois nouveaux systemes electroniques de NSe, C.R. Acad. Sci. Paris, Ser. C, 1970, 271, 1358. [all data]

Yee and Jones, 1971
Yee, K.K.; Jones, W.E., New electronic emission spectra of the NSe radical, J. Mol. Spectrosc., 1971, 37, 304. [all data]

Daumont, Jenouvrier, et al., 1976
Daumont, D.; Jenouvrier, A.; Pascat, B., Etats de valence de NSe: mise en evidence d'un etat a(4«PI»i), Can. J. Phys., 1976, 54, 1292. [all data]

Daumont, Jenouvrier, et al., 1972
Daumont, D.; Jenouvrier, A.; Pascat, B.; Guenebaut, H., Spectres electroniques de la molecule NSe localises de 3 500 A 5 500 analyses vibrationnelles et rotationnelles de deux systemes A - X et A', J. Chim. Phys. Phys.-Chim. Biol., 1972, 69, 218. [all data]

Pannetier, Goudmand, et al., 1965
Pannetier, G.; Goudmand, P.; Dessaux, O.; Arditi, I., Emission d'un systeme de bandes attribue a un nouveau radical NSe dans la reaction de l'azote active sur le chlorure de selenium, C.R. Acad. Sci. Paris, 1965, 260, 2155. [all data]

Goudmand and Dessaux, 1967
Goudmand, P.; Dessaux, O., Formation de molecules NS et NSe electroniquement excitees dans les reactions de l'azote actif sur les chlorures de soufre et de selenium, J. Chim. Phys. Phys.-Chim. Biol., 1967, 64, 135. [all data]

Dessaux and Goudmand, 1968
Dessaux, O.; Goudmand, P., Nouveaux systemes de NSe emis dans la reaction chimiluminescente de l'azote active sur les chlorures de selenium, C.R. Acad. Sci. Paris, Ser. C, 1968, 267, 1198. [all data]

Pascat, Daumont, et al., 1969
Pascat, B.; Daumont, D.; Jenouvrier, A.; Guenebaut, H., Analyse rotationnelle de plusieurs bandes d'un systeme A-X de la molecule NSe, C.R. Acad. Sci. Paris, Ser. B, 1969, 269, 1309. [all data]

Pascat, Daumont, et al., 1970
Pascat, B.; Daumont, D.; Jenouvrier, A.; Guenebaut, H., Analyse de la structure de rotation de plusieurs bandes d'un systeme B-X de la molecule NSe. Identification de l'emetteur et etude de l'effet isotopique, C.R. Acad. Sci. Paris, Ser. C, 1970, 270, 20. [all data]

Daumont, Jenouvrier, et al., 1970
Daumont, D.; Jenouvrier, A.; Pascat, B.; Guenebaut, H., Etude de trois nouvelles progressions v' de NSe. Analyse vibrationnelle et etude rotationnelle de deux bandes, C.R. Acad. Sci. Paris, Ser. B, 1970, 271, 120. [all data]

Daumont, Jenouvrier, et al., 1970, 2
Daumont, D.; Jenouvrier, A.; Pascat, B., Sur l'analyse vibrationnelle du systeme A(2«PI»(a)r) - X(2«PI»(a)r) de NSe. Etude des deux sous-systemes et mise en evidence de fortes perturbations vibrationnelles dans le sous-systeme 3/2, C.R. Acad. Sci. Paris, Ser. C, 1970, 271, 712-715. [all data]

Daumont, Jenouvrier, et al., 1971
Daumont, D.; Jenouvrier, A.; Pascat, B.; Guenebaut, H., Analyse vibrationnelle d'un nouveau systeme de bandes de NSe, localise de 3 500 a 5 500 Å, C.R. Acad. Sci. Paris, Ser. C, 1971, 272, 1545. [all data]

Jenouvrier, Daumont, et al., 1971
Jenouvrier, A.; Daumont, D.; Pascat, B.; Guenebaut, H., Analyse rotationnelle de deux systemes A-X et A'-X de NSe entre 3 500 et 5 500 Å, C.R. Acad. Sci. Paris, Ser. C, 1971, 272, 1627. [all data]

Harding, Jones, et al., 1971
Harding, L.; Jones, W.E.; Yee, K.K., Electronic spectrum of the N80Se molecule in the region 2840-3200 Å, Can. J. Phys., 1971, 49, 2033. [all data]

Jenouvrier, Pascat, et al., 1973
Jenouvrier, A.; Pascat, B.; Lefebvre-Brion, H., Anomalous «LAMBDA»-doubling of the X2«PI» state of N Se, J. Mol. Spectrosc., 1973, 45, 46. [all data]


Notes

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