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caesium fluoride

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 November, 1976

Symbols used in the table of constants
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 133Cs19F
Several autoionizing states 1 at and above 12.1 eV Berkowitz, 1969, also observed in the electron energy loss spectra of Geiger and Pfeiffer, 1968.
Geiger and Pfeiffer, 1968; Berkowitz, 1969
Continuous absorption with maximum at 47700 cm-1, preceded by diffuse absorption bands (fluctuation b.) in the region 43700 - 36900 cm-1. See note d of CsBr.
Barrow and Caunt, 1953
X 1Sigma+ 0 352.56 2 1.615 2  0.18436969 0.00117652 3  2.0168E-07 4 3.1E-10 2.345351 5  
Baikov and Vasilevskii, 1967
Microwave sp.
Honig, Stitch, et al., 1953; Veazey and Gordy, 1965; Honerjager and Tischer, 1973; Honerjager and Tischer, 1974
Mol. beam el. reson. 6
Trischka, 1948; Trischka, 1956; Graff and Runolfsson, 1965; English and Zorn, 1967; Hebert, Lovas, et al., 1968; Bennewitz, Haerten, et al., 1971
Mol beam magn. reson.
Mehran, Brooks, et al., 1966


1Interpretation analogous to CsBr (see note c of CsBr).
2Derived from the rotational constants Honerjager and Tischer, 1974; good agreement with infrared results Baikov and Vasilevskii, 1967. See also Ritchie and Lew, 1964.
3alphav= +1.18E-6(v+1/2)2 + 1.77E-8(v+1/2)3 Honerjager and Tischer, 1974.
4Also higher order constants Honerjager and Tischer, 1974.
5IR sp.
6muel = [7.8478+0.07026(v+1/2) + 0.000195(v+1/2)2] D Hebert, Lovas, et al., 1968, Bennewitz, Haerten, et al., 1971; eqQ(133Cs) = +[1245.2-16.2(v+1/2)+0.3l(v+1/2)2] kHz English and Zorn, 1967, Bennewitz, Haerten, et al., 1971; gJ(v=0) = (-)0.06420 muN, for v neq 0 see Graff and Runolfsson, 1965, Honerjager and Tischer, 1973; see also Mehran, Brooks, et al., 1966.
7Thermochemical value Brewer and Brackett, 1961; see also Bulewicz, Phillips, et al., 1961, Scheer and Fine, 1962, Stull and Prophet, 1971.
8Adiabatic ionization potential from the photoelectron spectrum Berkowitz, Dehmer, et al., 1973; vertical I.P. at 9.60 eV.


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

Berkowitz, 1969
Berkowitz, J., Photoionization of high-temperature vapors. V. Cesium halides; chemical shift of autoionization, J. Chem. Phys., 1969, 50, 3503. [all data]

Geiger and Pfeiffer, 1968
Geiger, J.; Pfeiffer, H.-C., Untersuchung der Anregung innerer Elektronen von Alkalihalogenidmolekulen im Energieverlustspektrum von 25 keV-Elektronen, Z. Phys., 1968, 208, 105. [all data]

Barrow and Caunt, 1953
Barrow, R.F.; Caunt, A.D., The ultra-violet absorption spectra of some gaseous alkali-metal halides and the dissociation energy of fluorine, Proc. R. Soc. London A, 1953, 219, 120. [all data]

Baikov and Vasilevskii, 1967
Baikov, V.I.; Vasilevskii, K.P., Infrared spectra of sodium, potassium, rubidium, and cesium fluoride vapors, Opt. Spectrosc. Engl. Transl., 1967, 22, 198, In original 364. [all data]

Honig, Stitch, et al., 1953
Honig, A.; Stitch, M.L.; Mandel, M., Microwave spectra of CsF, CsCl, and CsBr, Phys. Rev., 1953, 92, 901. [all data]

Veazey and Gordy, 1965
Veazey, S.E.; Gordy, W., Millimeter-wave molecular-beam spectroscopy: alkali fluorides, Phys. Rev. A: Gen. Phys., 1965, 138, 1303. [all data]

Honerjager and Tischer, 1973
Honerjager, R.; Tischer, R., Hochtemperatur-Mikrowellenspektrometer fur Zeeman-Effekt-Messungen an diamagnetischen Molekeln. gJ - Faktor von TlF, CsF, CsCl, CsBr, CsI und Anistropie der magnetischen suszeptibilitat von TlF, CsF und CsCl, Z. Naturforsch. A, 1973, 28, 458. [all data]

Honerjager and Tischer, 1974
Honerjager, R.; Tischer, R., Mikrowellenrotationsspektren der Molekeln CsF, CsCl, CsBr und CsI, Z. Naturforsch. A, 1974, 29, 819. [all data]

Trischka, 1948
Trischka, J.W., Nuclear quadrupole interaction in CsF, Phys. Rev., 1948, 74, 7, 718-727. [all data]

Trischka, 1956
Trischka, J., Electric dipole moments of the lower vibrational states of molecular CsF and CsCl, J. Chem. Phys., 1956, 25, 784. [all data]

Graff and Runolfsson, 1965
Graff, G.; Runolfsson, O., Gleichzeitige Messung von Hyperfeinstruktur, Starkeffekt und Zeemaneffekt des 133Cs19F mit einer molekulstrahl-resonanzapparatur, Z. Phys., 1965, 187, 140. [all data]

English and Zorn, 1967
English, T.C.; Zorn, J.C., Molecular beam measurement of the hyperfine structure of 133Cs19F, J. Chem. Phys., 1967, 47, 3896. [all data]

Hebert, Lovas, et al., 1968
Hebert, A.J.; Lovas, F.J.; Melendres, C.A.; Hollowell, C.D.; Story, T.L., Jr.; Street, K., Jr., Dipole moments of some alkali halide molecules by the molecular beam electric resonance method, J. Chem. Phys., 1968, 48, 2824. [all data]

Bennewitz, Haerten, et al., 1971
Bennewitz, H.G.; Haerten, R.; Klais, O.; Muller, G., Molecular-beam measurement of the electric dipole moment and the quadrupole coupling constant of CsF in vibrational states up to v = 8, Chem. Phys. Lett., 1971, 9, 19. [all data]

Mehran, Brooks, et al., 1966
Mehran, F.; Brooks, R.A.; Ramsey, N.F., Rotational magnetic moments of alkali-halide molecules, Phys. Rev., 1966, 141, 93. [all data]

Ritchie and Lew, 1964
Ritchie, R.K.; Lew, H., Infrared spectra of NaF and KF, Can. J. Phys., 1964, 42, 43. [all data]

Brewer and Brackett, 1961
Brewer, L.; Brackett, E., The dissociation energies of gaseous alkali halides, Chem. Rev., 1961, 61, 425. [all data]

Bulewicz, Phillips, et al., 1961
Bulewicz, E.M.; Phillips, L.F.; Sugden, T.M., Determination of dissociation constants and heats of formation of simple molecules by flame photometry. Part 8. Stabilities of the gaseous diatomic halides of certain metals, Trans. Faraday Soc., 1961, 57, 921. [all data]

Scheer and Fine, 1962
Scheer, M.D.; Fine, J., Entropies, heats of sublimation, and dissociation energies of the cesium halides, J. Chem. Phys., 1962, 36, 1647. [all data]

Stull and Prophet, 1971
Stull, D.R.; Prophet, H., JANAF Thermochemical Tables. Second Edition, Office of SRD (NSRDS-NBS 37), Washington, D.C., 1971, 0. [all data]

Berkowitz, Dehmer, et al., 1973
Berkowitz, J.; Dehmer, J.L.; Walker, T.E.H., PES of high-temperature vapors. IV. The cesium halides. Effect of spin-orbit interaction on the photoelectron and mass spectra of the alkali halides, J. Chem. Phys., 1973, 59, 3645. [all data]


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