selenium trioxide

Formula: O₃Se
Molecular weight: 126.96
IUPAC Standard InChI: InChI=1S/O3Se/c1-4(2)3
IUPAC Standard InChIKey: VFLXBUJKRRJAKY-UHFFFAOYSA-N
CAS Registry Number: 13768-86-0
Chemical structure:
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Gas phase ion energetics data

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Data compiled by: Henry M. Rosenstock, Keith Draxl, Bruce W. Steiner, and John T. Herron

Ionization energy determinations

IE (eV)	Method	Reference
11.6 ± 0.5	EI	Ficalora, Thompson, et al., 1969

Appearance energy determinations

Ion	AE (eV)	Other Products	Method	Reference
SeO⁺	14.8 ± 0.5	?	EI	Ficalora, Thompson, et al., 1969
SeO₂⁺	13.8 ± 0.5	O	EI	Ficalora, Thompson, et al., 1969
Se⁺	18.3 ± 0.5	?	EI	Ficalora, Thompson, et al., 1969

Vibrational and/or electronic energy levels

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Data compiled by: Marilyn E. Jacox

State: X

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


a₂	2	Deform.	356	Ar	IR	Brisdon and Ogden, 1987
	2	Deform.	358	N₂	IR	Brisdon and Ogden, 1987
e'	3	SeO stretch	995	Ar	IR	Brisdon and Ogden, 1987 Brabson, Andrews, et al., 1996
	3	SeO stretch	1005.5	N₂	IR	Brisdon and Ogden, 1987

Additional references: Jacox, 1994, page 214; Jacox, 1998, page 260; Brassington, Edwards, et al., 1978

References

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

Ficalora, Thompson, et al., 1969
Ficalora, P.J.; Thompson, J.C.; Margrave, J.L., Mass spectrometric studies at high temperatures-XXVI.The sublimation of SeO, and SeO₃, J. Inorg. Nucl. Chem., 1969, 31, 3771. [all data]

Brisdon and Ogden, 1987
Brisdon, A.K.; Ogden, J.S., Matrix isolation and mass spectrometric studies on selenium trioxide vapour: the characterisation of monomeric SeO3, J. Mol. Struct., 1987, 157, 1-3, 141, https://doi.org/10.1016/0022-2860(87)87089-8 . [all data]

Brabson, Andrews, et al., 1996
Brabson, G.D.; Andrews, L.; Marsden, C.J., Reactions of Selenium and Oxygen. Matrix Infrared Spectra and Density Functional Calculations of Novel Se, J. Phys. Chem., 1996, 100, 41, 16487, https://doi.org/10.1021/jp961388g . [all data]

Jacox, 1994
Jacox, M.E., Vibrational and electronic energy levels of polyatomic transient molecules, American Chemical Society, Washington, DC, 1994, 464. [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]

Brassington, Edwards, et al., 1978
Brassington, N.J.; Edwards, H.G.M.; Long, D.A.; Skinner, M., The pure rotational Raman spectrum of SeO3, J. Raman Spectrosc., 1978, 7, 3, 158, https://doi.org/10.1002/jrs.1250070310 . [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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