Home Symbol which looks like a small house Up Solid circle with an upward pointer in it


Gas phase ion energetics data

Go To: Top, References, Notes

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

Data evaluated as indicated in comments:
HL - E.P. Hunter and S.G. Lias
L - S.G. Lias

Data compiled as indicated in comments:
LL - S.G. Lias and J.F. Liebman
LBLHLM - S.G. Lias, J.E. Bartmess, J.F. Liebman, J.L. Holmes, R.D. Levin, and W.G. Mallard
LLK - S.G. Lias, R.D. Levin, and S.A. Kafafi
RDSH - H.M. Rosenstock, K. Draxl, B.W. Steiner, and J.T. Herron

View reactions leading to U+ (ion structure unspecified)

IE (evaluated)6.19405eVN/AN/AL
Proton affinity (review)995.2kJ/molN/AHunter and Lias, 1998HL
Gas basicity973.2kJ/molN/AHunter and Lias, 1998HL

Ionization energy determinations

IE (eV)MethodReferenceComment
6.19405EVALLide, 1992LL
6.22 ± 0.02PEAllen, Baerends, et al., 1988LL
6.0 ± 0.3EILau and Hildenbrand, 1987LBLHLM
6.09 ± 0.11SIChetverikov, Gabeskiriya, et al., 1981LLK
6.0 ± 0.5EIGupta and Gingerich, 1979LLK
6.0 ± 0.5EIGingerich and Gupta, 1978LLK
6.1941 ± 0.0005LSSolarz, May, et al., 1976LLK
6.187 ± 0.002LSJanes, Itzkan, et al., 1976LLK
6.05 ± 0.07EVALSugar, 1974LLK
6.1 ± 0.1EIRauh and Ackermann, 1974LLK
6.05 ± 0.07SSugar, 1973LLK
6.3 ± 0.3SIAvni and Klein, 1973LLK
6.8 ± 1.5EIBlackburn and Danielson, 1972LLK
6.2 ± 0.5SRadziemski, Steinhaus, et al., 1970RDSH
6.19 ± 0.06EIEmel'yanov, Khodeev, et al., 1970RDSH
6.1 ± 0.3EIPattoret, Drowart, et al., 1968RDSH
~6. ± 0.5EICater, Rauh, et al., 1968RDSH
6.19 ± 0.06SIHertel, 1967RDSH
6.11 ± 0.05EIMann, 1964RDSH
6.08 ± 0.08SIBakulina and Ionov, 1959RDSH


Go To: Top, 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.

Hunter and Lias, 1998
Hunter, E.P.; Lias, S.G., Evaluated Gas Phase Basicities and Proton Affinities of Molecules: An Update, J. Phys. Chem. Ref. Data, 1998, 27, 3, 413-656. [doi:10.1063/1.556018] [all data]

Lide, 1992
Lide, D.R. (Editor), Ionization potentials of atoms and atomic ions in Handbook of Chem. and Phys., 1992, 10-211. [all data]

Allen, Baerends, et al., 1988
Allen, G.C.; Baerends, E.J.; Vernooijs, P.; Dyke, J.M.; Ellis, A.M.; Feher, M.; Morris, A., High temperature photoelectron spectroscopy: A study of U, UO, and UO2., J. Chem. Phys., 1988, 89, 5363. [all data]

Lau and Hildenbrand, 1987
Lau, K.H.; Hildenbrand, D.L., Thermochemistry of the gaseous uranium bromides UBr through UBr5(a), J. Chem. Phys., 1987, 86, 2949. [all data]

Chetverikov, Gabeskiriya, et al., 1981
Chetverikov, A.P.; Gabeskiriya, V.Y.; Puchkov, V.V., Ionization of uranium, plutonium, americium, rhenium, curium, and californium on a rhenium surface, Sov. Phys. Tech. Phys., 1981, 26, 73. [all data]

Gupta and Gingerich, 1979
Gupta, S.K.; Gingerich, K.A., Observation and atomization energies of the gaseous uranium carbides, UC, UC2, UC3, UC4, UC5, and UC6 by high temperature mass spectrometry, J. Chem. Phys., 1979, 71, 3072. [all data]

Gingerich and Gupta, 1978
Gingerich, K.A.; Gupta, K.A., Dissociation energies of the molecules RhTh and RhU from high temperature mass spectrometry and predicted thermodynamic stabilities of selected diatomic actinide-platinum metal intermetallic molecules, J. Chem. Phys., 1978, 69, 505. [all data]

Solarz, May, et al., 1976
Solarz, R.W.; May, C.A.; Carlson, L.R.; Worden, E.F.; Johnson, S.A.; Paisner, J.A.; Radziemski, L.J., Jr., Detection of Rydberg states in atomic uranium using time-resolved stepwise laser photoionization, Phys. Rev. A:, 1976, 14, 1129. [all data]

Janes, Itzkan, et al., 1976
Janes, G.S.; Itzkan, I.; Pike, C.T.; Levy, R.H.; Levin, L., Two-photon laser isotope separation of atomic uranium: Spectroscopic studies, excited-state, and photoionization cross section, IEEE J. Quantum Electron., 1976, 12, 111. [all data]

Sugar, 1974
Sugar, J., Revised ionization energies of the neutral actinides, J. Chem. Phys., 1974, 60, 4103. [all data]

Rauh and Ackermann, 1974
Rauh, E.G.; Ackermann, R.J., First ionization potentials of some refractory oxide vapors, J. Chem. Phys., 1974, 60, 1396. [all data]

Sugar, 1973
Sugar, J., Ionization energies of the neutral actinides, J. Chem. Phys., 1973, 59, 788. [all data]

Avni and Klein, 1973
Avni, R.; Klein, F.S., The first ionization potential of uranium and thorium measured in a d.c. arc plasma, Spectrochim. Acta Part B, 1973, 25, 331. [all data]

Blackburn and Danielson, 1972
Blackburn, P.E.; Danielson, P.M., Electron impact relative ionization cross sections fragmentation of U, UO, UO2, and UO3, J. Chem. Phys., 1972, 56, 6156. [all data]

Radziemski, Steinhaus, et al., 1970
Radziemski, L.J., Jr.; Steinhaus, D.W.; Cowan, R.D., Present status of the analysis of UI UII as derived from measurements of optical spectra, J. Opt. Soc. Am., 1970, 60, 1556. [all data]

Emel'yanov, Khodeev, et al., 1970
Emel'yanov, A.M.; Khodeev, Y.S.; Gorokhov, L.N., Determination of ionization potentials of atomic uranium by electron impact method. I. Measurement of first ionization potential of uranium, Teplofiz. Vys. Temp., 1970, 8, 279, In original 296. [all data]

Pattoret, Drowart, et al., 1968
Pattoret, A.; Drowart, J.; Smoes, S., Etudes thermodynamiques par spectrometrie de masse sur le systeme uranium-oxygene in Thermodyn. Nucl. Mater. Proc. Symp., 1967 Vienna, 1968, 613. [all data]

Cater, Rauh, et al., 1968
Cater, E.D.; Rauh, E.G.; Thorn, R.J., Thermochemistry of UOS; evaporation of US-UO2 mixtures; on the attainment of equilibrium in Knudsen cells, J. Chem. Phys., 1968, 49, 5244. [all data]

Hertel, 1967
Hertel, G.R., Surface ionization. II. The first ionization potential of uranium, J. Chem. Phys., 1967, 47, 335. [all data]

Mann, 1964
Mann, J.B., Ionization of U, UO, and UO2 by electron impact, J. Chem. Phys., 1964, 40, 1632. [all data]

Bakulina and Ionov, 1959
Bakulina, I.N.; Ionov, N.I., Determination of the ionization potential of uranium atoms by the surface ionization method, Zh. Eksperim. i Teor. Fiz., 1959, 36, 1001. [all data]


Go To: Top, Gas phase ion energetics data, References