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Chromium monoxide


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 December, 1974

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 (52)Cr16O
StateTeomegaeomegaexeomegaeyeBealphaegammaeDebetaereTrans.nu00
B 5Pi 16586 1 750.5 H 9.4  0.4874 0.0044    1.703 B rarrow X R 16487.6
Ferguson, 1932; Ghosh, 1932; missing citation; missing citation; Murthy and Nagaraj, 1964
  750.5 H 9.4  0.4801 0.0048    1.703 B rarrow X R 16501.2
Ferguson, 1932; Ghosh, 1932; missing citation; missing citation; Murthy and Nagaraj, 1964
  750.5 H 9.4  0.4751 0.0057    1.703 B rarrow X R 16511.3
Ferguson, 1932; Ghosh, 1932; missing citation; missing citation; Murthy and Nagaraj, 1964
  750.5 H 9.4  0.4735 0.0070    1.703 B rarrow X R 16519.4
Ferguson, 1932; Ghosh, 1932; missing citation; missing citation; Murthy and Nagaraj, 1964
  750.5 H 9.4  0.4675 0.0050    1.703 B rarrow X R 16515.2
Ferguson, 1932; Ghosh, 1932; missing citation; missing citation; Murthy and Nagaraj, 1964
StateTeomegaeomegaexeomegaeyeBealphaegammaeDebetaereTrans.nu00
            (11117)
missing citation
X 5Pi 0 2 898.4 H 6.75  0.5410 0.0049    1.615  
0 2 898.4 H 6.75  0.5348 0.0049    1.615  
0 2 898.4 H 6.75  0.5284 0.0050    1.615  
0 2 898.4 H 6.75  0.5233 0.0036    1.615  
0 2 898.4 H 6.75  0.5231 0.0070    1.615  

Notes

1|A| ~100.
2|A| ~110. Not certain that this is the ground state.
3Thermochemical value (mass-spectrom.) Grimley, Burns, et al., 1961.

References

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

Ferguson, 1932
Ferguson, W.F.C., The chromium oxide and the vanadium oxide band spectra, Bur. Stand. J. Res. US, 1932, 8, 381. [all data]

Ghosh, 1932
Ghosh, C., Das bandenspektrum des chromoxyds, Z. Phys., 1932, 78, 521. [all data]

Murthy and Nagaraj, 1964
Murthy, N.S.; Nagaraj, S., A note on the Franck-Condon factors and r-centroids of the CrO (A-->X) band system, Proc. Phys. Soc. London, 1964, 84, 827. [all data]

Grimley, Burns, et al., 1961
Grimley, R.T.; Burns, R.P.; Inghram, M.G., Thermodynamics of the vaporization of Cr2O3: dissociation energies of CrO, CrO2, and CrO3, J. Chem. Phys., 1961, 34, 664. [all data]


Notes

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