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DSr


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 (88)SrD
StateTeomegaeomegaexeomegaeyeBealphaegammaeDebetaereTrans.nu00
Fragments of additional absorption systems above 30000 cm-1; tentative rotational analyses.
Khan, 1966; Khan and Butt, 1968; missing citation; missing citation
F 2Sigma+ 34097 [964.6] Z (17) 1  [2.0334] 2 0.032  [3.47E-5]  [2.0519] F larrow X V 34164.87 Z
Edvinsson, Kopp, et al., 1963; Khan, 1963; Khan, 1966; Khan and Butt, 1968
C 2Sigma+ 26226 [943] Z (11.9) 3  1.98 4 0.03  [2.5E-5]  2.08 C rarrow X V 26279 Z
Watson, Fredrickson, et al., 1936; missing citation
B 2Sigma+ 14335 [857] Z (10) 1  1.9426 5 0.0349  [4.02E-5] 6  2.0994 B rarrow X V 14343.9 Z
Watson, Fredrickson, et al., 1936
StateTeomegaeomegaexeomegaeyeBealphaegammaeDebetaereTrans.nu00
X 2Sigma+ 0 [841] Z (8.6) 3  1.8609 7 0.0292  [3.47E-5] 8  2.1449  

Notes

1From isotope relations.
2Spin doubling constant gamma0 = +0.0357.
3From the value for SrH.
4Breaking-off above N'=29 and 19 in v'=0 and 1, respectively Khan, 1963, 2. Strong perturbations.
5Spin doubling constant gamma0 = -2.01 N < 10 Watson, Fredrickson, et al., 1936. See 15.
6D1 = 3.81E-5.
7Spin doubling constant gamma0 = +0.0613.
8D1 = 3.64E-5.
9From the predissociation in C 2Sigma+ assuming dissociation into 3P0 + 2S.
10Spin doubling constant gamma0 = +0.076. All lines are diffuse owing to predissociation.
11Breaking-off in emission at low pressure above N'=19 and 4 in v'=0 and 1, respectively Khan, 1963, 2. Perturbations.
12Strong perturbations.
13Franck-Condon factors Singh and Srivastava, 1968.
14Perturbations.
15Spin doubling constant gamma0 = -3.81 N < 10 Watson, Fredrickson, et al., 1936. For a more elaborate evaluation of the spin splitting including higher-order correction terms see Veseth, 1971.
16A0 ~ +300. See also 17.
17Very large Lambda-type doubling, see Watson and Fredrickson, 1932, Veseth, 1971, 2. The constants given here are effective values; see, however, Veseth, 1971, 3 who has evaluated the true constants by taking into account several usually neglected corrections to the rotational energy formulae for a 2Pi state.
18From Watson, Fredrickson, et al., 1936; spin doubling constant gamma0 = 0.122 Watson, Fredrickson, et al., 1936. Edvinsson, Kopp, et al., 1963 give B0 = 3.6336, D0 = 13.39E-5.
19D1 = 12.9E-5.
20In argon matrix at 4 K.

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.

Khan, 1966
Khan, M.A., Rotational analysis of some new absorption bands of SrH and SrD in the ultra-violet region, Proc. Phys. Soc. London, 1966, 89, 165. [all data]

Khan and Butt, 1968
Khan, M.A.; Butt, M.R., A study of some new absorption bands of SrH and SrD in the ultra-violet region, J. Phys. B:, 1968, 1, 745. [all data]

Edvinsson, Kopp, et al., 1963
Edvinsson, G.; Kopp, I.; Lindgren, B.; Aslund, N., Rotational analysis of an ultraviolet system of the hydrides and deuterides of Ca, Sr and Ba, Ark. Fys., 1963, 25, 95. [all data]

Khan, 1963
Khan, M.A., SrH and SrD bands at 2927 Å and 2928 Å, Proc. Phys. Soc. London, 1963, 81, 1047. [all data]

Watson, Fredrickson, et al., 1936
Watson, W.W.; Fredrickson, W.R.; Hogan, M.E., Jr., Strontium deuteride and hydride spectra, Phys. Rev., 1936, 49, 150. [all data]

Khan, 1963, 2
Khan, M.A., Extension of the C2«SIGMA» --> X2«SIGMA» system of SrD, Proc. Phys. Soc. London, 1963, 82, 564. [all data]

Singh and Srivastava, 1968
Singh, P.D.; Srivastava, Y.P., Franck-Condon factors and r-centroids for some bands of the SrH, J. Quant. Spectrosc. Radiat. Transfer, 1968, 8, 1443. [all data]

Veseth, 1971
Veseth, L., An investigation of the interaction between close-lying 2«SIGMA» and 2«PI» states of diatomic molecules. I. Spin-splitting of the 2«SIGMA» levels, Mol. Phys., 1971, 20, 1057. [all data]

Watson and Fredrickson, 1932
Watson, W.W.; Fredrickson, W.R., The spectrum of strontium hydride, Phys. Rev., 1932, 39, 765. [all data]

Veseth, 1971, 2
Veseth, L., An investigation of the interaction between close-lying 2«SIGMA» and 2«PI» states of diatomic molecules. II. «LAMBDA»-doubling of the 2«PI» levels, Mol. Phys., 1971, 21, 287. [all data]

Veseth, 1971, 3
Veseth, L., Corrections to the spin-orbit splitting in 2«PI» states of diatomic molecules, J. Mol. Spectrosc., 1971, 38, 228. [all data]


Notes

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