cerium dioxide

Formula: CeO₂
Molecular weight: 172.115
CAS Registry Number: 1306-38-3
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Data at other public NIST sites:
- X-ray Photoelectron Spectroscopy Database, version 5.0
- X-ray Photoelectron Spectroscopy Database, version 5.0
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Gas phase ion energetics data

Go To: Top, Vibrational and/or electronic energy levels, References, Notes

Data compiled as indicated in comments:
LLK - Sharon G. Lias, Rhoda D. Levin, and Sherif A. Kafafi
RDSH - Henry M. Rosenstock, Keith Draxl, Bruce W. Steiner, and John T. Herron

Ionization energy determinations

IE (eV)	Method	Reference	Comment
9.7 ± 0.5	EI	Piacente, Bardi, et al., 1973	LLK
10.3 ± 0.2	EI	Ackermann and Rauh, 1971	LLK
9.5 ± 0.5	EI2	Staley and Norman, 1969	RDSH

Appearance energy determinations

Ion	AE (eV)	Other Products	Method	Reference	Comment
OCe⁺	~11.	?	EI	Ackermann and Rauh, 1971	LLK
CeO⁺	11.6 ± 0.5	O	EI	Staley and Norman, 1969	RDSH

Vibrational and/or electronic energy levels

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Data compiled by: Marilyn E. Jacox

State: ?

Energy (cm^-1)	Med.	λ_min (nm)	λ_max (nm)	References


T_o = 20067	Ne	498	649	DeKock and Weltner, 1971

State: ?

Energy (cm^-1)	Med.	λ_min (nm)	λ_max (nm)	References


T_o = 19836	Ar	504	660	DeKock and Weltner, 1971

State: ?

Energy (cm^-1)	Med.	λ_min (nm)	λ_max (nm)	References


T_o = 19259	N₂	519	633	DeKock and Weltner, 1971

State: X

Vib. sym.	No.	Approximate type of mode	cm^-1		Med.	Method	References


a₁	1	Sym. stretch	777	w	Ne	IR EM	DeKock and Weltner, 1971
	1	Sym. stretch	757.3		Ar	IR EM	DeKock and Weltner, 1971 Gabelnick, Reedy, et al., 1974 Willson and Andrews, 1999
	1	Sym. stretch	714		N₂	IR EM	DeKock and Weltner, 1971
b₂	3	Asym. stretch	759	s	Ne	IR	DeKock and Weltner, 1971
	3	Asym. stretch	736.7	s	Ar	IR	DeKock and Weltner, 1971 Gabelnick, Reedy, et al., 1974 Willson and Andrews, 1999
	3	Asym. stretch	719		N₂	IR	DeKock and Weltner, 1971

Additional references: Jacox, 1998, page 179; Jacox, 2003, page 109

Notes

Weak

Strong

Energy separation between the v = 0 levels of the excited and electronic ground states.

References

Go To: Top, Gas phase ion energetics data, Vibrational and/or electronic energy levels, Notes

Piacente, Bardi, et al., 1973
Piacente, V.; Bardi, G.; Malaspina, L.; Desideri, A., Dissociation energy of CeO₂ and Ce₂O₂ molecules, J. Chem. Phys., 1973, 59, 31. [all data]

Ackermann and Rauh, 1971
Ackermann, R.J.; Rauh, E.G., A high-temperature study of the stoichiometry, phase behavior, vaporization characteristics, and thermodynamic properties of the cerium + oxygen system, J. Chem. Thermodyn., 1971, 3, 609. [all data]

Staley and Norman, 1969
Staley, H.G.; Norman, J.H., Thermodynamics of gaseous monoxide-dioxide equilibria for cerium, praseodymium and neodymium, Intern. J. Mass Spectrom. Ion Phys., 1969, 2, 35. [all data]

DeKock and Weltner, 1971
DeKock, R.L.; Weltner, W., Jr., Spectroscopy of rare earth oxide molecules in inert matrices at 4.deg.K, J. Phys. Chem., 1971, 75, 4, 514, https://doi.org/10.1021/j100674a013 . [all data]

Gabelnick, Reedy, et al., 1974
Gabelnick, S.D.; Reedy, G.T.; Chasanov, M.G., Infrared spectra and structure of some matrix-isolated lanthanide and actinide oxides, J. Chem. Phys., 1974, 60, 3, 1167, https://doi.org/10.1063/1.1681128 . [all data]

Willson and Andrews, 1999
Willson, S.P.; Andrews, L., Characterization of the Reaction Products of Laser-Ablated Early Lanthanide Metal Atoms with Molecular Oxygen. Infrared Spectra of LnO, LnO, J. Phys. Chem. A, 1999, 103, 17, 3171, https://doi.org/10.1021/jp990005m . [all data]

Jacox, 1998
Jacox, M.E., Vibrational and electronic energy levels of polyatomic transient molecules: supplement A, J. Phys. Chem. Ref. Data, 1998, 27, 2, 115-393, https://doi.org/10.1063/1.556017 . [all data]

Jacox, 2003
Jacox, M.E., Vibrational and electronic energy levels of polyatomic transient molecules: supplement B, J. Phys. Chem. Ref. Data, 2003, 32, 1, 1-441, https://doi.org/10.1063/1.1497629 . [all data]

Notes

Go To: Top, Gas phase ion energetics data, Vibrational and/or electronic energy levels, References

Symbols used in this document:

AE Appearance energy
Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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