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silicon 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 September, 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 28Si14N
StateTeomegaeomegaexeomegaeyeBealphaegammaeDebetaereTrans.nu00
The emitter of the woods band at 26017 cm-1 Woods, 1943 has been shown Singh, Bredohl, et al., 1973 to be SiO+ and not SiN as suggested by Dunn, Rao, et al., 1969.
L 2Pii a+(32661) 1 [718] 2 H   [0.549] 2     [1.814] 2 L rarrow A R 32491 2 H
Bredohl, Dubois, et al., 1976
            32508 2 H
D 2Pii a+27865.6 3 699.33 Z 3.48  0.5238 4 0.0041  1.0E-6  1.8571 D rarrow A R 27693.8 Z
Mulliken, 1925; Schofield and Broida, 1965; Linton, 1975; missing citation
K 2Sigma a+25718.2 1142 2 Z 11.5  0.6775 2 0.005    1.633 2 K rarrow A V 25765.7 2 Z
missing citation
StateTeomegaeomegaexeomegaeyeBealphaegammaeDebetaereTrans.nu00
B 2Sigma+ 24299.21 1031.03 Z 16.85 5 0.15 0.7238 6 7 8 0.01048  1.5E-6  1.5798 B lrarrow X 9 R 24236.47 Z
Mulliken, 1925; missing citation; Thrush, 1960; Dunn and Dunn, 1972; Bredohl, Dubois, et al., 1976
A 2Pii a 10 11 1044.41 Z 6.20 -0.011 0.67516 0.00538  1.10E-6  1.63570  
X 2Sigma+ 0 1151.36 Z 6.47 -0.007 0.7311 12 13 8 0.00565  1.2E-6  1.5719  

Notes

1A ~ -72.
2Vibrational numbering unknown; the lowest observed level is arbitrarily assumed to have v=0.
3The observed spin-orbit coupling constants vary from A3 = -60.42 to A7 = -63.49 Bredohl, Dubois, et al., 1976.
4Perturbations in v=3 by a Sigma state Linton, 1975, Bredohl, Dubois, et al., 1976.
5omegaeze = -0.011.
6 Singh, Bredohl, et al., 1973 give the spin splitting constant gamma0 = +0.0020 but Bredohl, Dubois, et al., 1976 change this to - 0.0034.
7Numerous perturbations; for a summary see Bredohl, Dubois, et al., 1976.
8Potential curves Singh and Rai, 1966, see also Bredohl, Dubois, et al., 1976.
9missing note
10 Bredohl, Dubois, et al., 1976 estimate a ~ 8000.
11The observed spin-orbit coupling constants [A1...A5 Bredohl, Dubois, et al., 1976] are approximately given by Av = -89.54 + 0.27(v+1/2).
12 Singh, Bredohl, et al., 1973 give the spin splitting constant gamma0 = 0.0153 [see also Dunn, Rao, et al., 1969, Dunn and Dunn, 1972] but Bredohl, Dubois, et al., 1976 change this to -0.0172.
13A small perturbation in v=8 probably arises from interaction with A 2Pi Bredohl, Dubois, et al., 1976.
14The 0-0 sequence was wrongly attributed to Si0+ by Nagaraj and Verma, 1968, see the correction by Dunn, Rao, et al., 1969. Measured relative intensities, Franck-Condon factors, r dependence of the transition moment Stevens and Ferguson, 1963, Gohel and Shah, 1975.

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.

Woods, 1943
Woods, L.H., On the silicon oxide bands, Phys. Rev., 1943, 63, 426. [all data]

Singh, Bredohl, et al., 1973
Singh, M.; Bredohl, H.; Remy, Fr.; Dubois, I., The spectrum of SiO+ and SiN, J. Phys. B:, 1973, 6, 2656. [all data]

Dunn, Rao, et al., 1969
Dunn, T.M.; Rao, K.M.; Nagaraj, S.; Verma, R.D., New spectrum of the SiO+ molecule -- a correction, Can. J. Phys., 1969, 47, 2128. [all data]

Bredohl, Dubois, et al., 1976
Bredohl, H.; Dubois, I.; Houbrechts, Y.; Singh, M., The emission spectrum of SiN, Can. J. Phys., 1976, 54, 680-688. [all data]

Mulliken, 1925
Mulliken, R.S., The isotope effect in band spectra, IV: the spectrum of silicon nitride, Phys. Rev., 1925, 26, 319-338. [all data]

Schofield and Broida, 1965
Schofield, K.; Broida, H.P., Chemiluminescent emission from the reactions of volatile silicon compounds and active nitrogen, Photochem. Photobiol., 1965, 4, 989-1002. [all data]

Linton, 1975
Linton, C., Rotational analysis of some "Mulliken" (D2«PI» - A2«PI») bands of the SiN molecule, J. Mol. Spectrosc., 1975, 55, 108-119. [all data]

Thrush, 1960
Thrush, B.A., Absorption spectra of diatomic radicals containing boron or silicon, Nature (London), 1960, 186, 1044. [all data]

Dunn and Dunn, 1972
Dunn, E.M.; Dunn, T.M., Violet electronic emission of SiN, Can. J. Phys., 1972, 50, 860-861. [all data]

Singh and Rai, 1966
Singh, R.B.; Rai, D.K., Potential curves for some diatomic molecules: P2, PN, SiN, NBr, BaO, BeF, SiF & SnF, Indian J. Pure Appl. Phys., 1966, 4, 102. [all data]

Nagaraj and Verma, 1968
Nagaraj, S.; Verma, R.D., New spectrum of the SiO+ molecule, Can. J. Phys., 1968, 46, 1597. [all data]

Stevens and Ferguson, 1963
Stevens, A.E.; Ferguson, H.I.S., Photoelectric intensity measurements upon bands of the SiN (B2«SIGMA»+-X2«SIGMA») spectrum, Can. J. Phys., 1963, 41, 240-245. [all data]

Gohel and Shah, 1975
Gohel, V.B.; Shah, N.P., Realistic FC factors, r - centroids & related integrals for B-X band system of SiN, Indian J. Pure Appl. Phys., 1975, 13, 3, 162-165. [all data]


Notes

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