Cesium dimer


Gas phase thermochemistry data

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

Quantity Value Units Method Reference Comment
Δfgas25.662kcal/molReviewChase, 1998Data last reviewed in December, 1983
Quantity Value Units Method Reference Comment
gas,1 bar68.033cal/mol*KReviewChase, 1998Data last reviewed in December, 1983

Gas Phase Heat Capacity (Shomate Equation)

Cp° = A + B*t + C*t2 + D*t3 + E/t2
H° − H°298.15= A*t + B*t2/2 + C*t3/3 + D*t4/4 − E/t + F − H
S° = A*ln(t) + B*t + C*t2/2 + D*t3/3 − E/(2*t2) + G
    Cp = heat capacity (cal/mol*K)
    H° = standard enthalpy (kcal/mol)
    S° = standard entropy (cal/mol*K)
    t = temperature (K) / 1000.

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Temperature (K) 298. to 1500.1500. to 6000.
A 6.97871010.09570
B 10.14290-4.443339
C -13.387901.294240
D 4.311860-0.102151
E 0.0184611.373810
F 23.2997025.00939
G 74.1156183.48229
H 25.6610925.66109
ReferenceChase, 1998Chase, 1998
Comment Data last reviewed in December, 1983 Data last reviewed in December, 1983

Gas phase ion energetics data

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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 as indicated in comments:
LBLHLM - Sharon G. Lias, John E. Bartmess, Joel F. Liebman, John L. Holmes, Rhoda D. Levin, and W. Gary Mallard
LLK - Sharon G. Lias, Rhoda D. Levin, and Sherif A. Kafafi
RDSH - Henry M. Rosenstock, Keith Draxl, Bruce W. Steiner, and John T. Herron
B - John E. Bartmess

View reactions leading to Cs2+ (ion structure unspecified)

Electron affinity determinations

EA (eV) Method Reference Comment
0.469 ± 0.015LPESMcHugh, Eaton, et al., 1989Vertical Detachment Energy: 0.511±0.010 eV; B

Ionization energy determinations

IE (eV) Method Reference Comment
3.7 ± 0.1PIKappes, Radi, et al., 1985LBLHLM
≤3.76 ± 0.06SHelm and Moller, 1983LBLHLM
3.68EVALMarr and Wherrett, 1972LLK
3.60PIMarr and Wherrett, 1972LLK
3.8 ± 0.1PIFoster, Leckenby, et al., 1969RDSH

References

Go To: Top, Gas phase thermochemistry data, Gas phase ion energetics data, Notes

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

Chase, 1998
Chase, M.W., Jr., NIST-JANAF Themochemical Tables, Fourth Edition, J. Phys. Chem. Ref. Data, Monograph 9, 1998, 1-1951. [all data]

McHugh, Eaton, et al., 1989
McHugh, K.M.; Eaton, J.G.; Lee, G.H.; Sarkas, H.W.; Kidder, L.H.; Snodgrass, J.T.; Manaa, M.R.; Bowen, K.H., Photoelectron Spectra of the alkali metal cluster Anions: Na-,n=2-5, K-,n=2-7, Rb-,n=2-3, and Cs-,n=2-3, J. Chem. Phys., 1989, 91, 6, 3792, https://doi.org/10.1063/1.456861 . [all data]

Kappes, Radi, et al., 1985
Kappes, M.M.; Radi, P.; Schar, M.; Schumacher, E., Photoionization measurements on dialkali monohalides generated in supersonic nozzle beams, Chem. Phys. Lett., 1985, 113, 243. [all data]

Helm and Moller, 1983
Helm, H.; Moller, R., Bound-free spectroscopy of Cs2+, Phys. Rev. A:, 1983, 27, 2493. [all data]

Marr and Wherrett, 1972
Marr, G.V.; Wherrett, S.R., The ionization of caesium vapour by the method of space charge amplification, J. Phys. B:, 1972, 5, 1735. [all data]

Foster, Leckenby, et al., 1969
Foster, P.J.; Leckenby, R.E.; Robbins, E.J., The ionization potentials of clustered alkali metal atoms, J. Phys. B:, 1969, 2, 478. [all data]


Notes

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