beryllium chloride

Formula: BeCl₂
Molecular weight: 79.918
CAS Registry Number: 7787-47-5
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Other data available:
- Gas phase thermochemistry data
- Condensed phase thermochemistry data
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Gas phase ion energetics data

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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
11.15	PE	Lee and Potts, 1979	LLK
12.5 ± 1.0	EI	Farber and Srivastava, 1974	LLK
12.4 ± 0.4	EI	Hildenbrand and Theard, 1969	RDSH
12.75 ± 0.02	PE	Lee and Potts, 1979	Vertical value; LLK

Appearance energy determinations

Ion	AE (eV)	Other Products	Method	Reference	Comment
Be⁺	20.4 ± 0.4	?	EI	Hildenbrand and Theard, 1969	RDSH
BeCl⁺	14.3 ± 0.5	Cl	EI	Hildenbrand and Theard, 1969	RDSH

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


Π_u	2	Bend	238	s	Ne	IR	Snelson, 1968
Σ_u⁺	3	Asym. stretch	1122	s	Ne	IR	Snelson, 1966 Snelson, 1968
	3	Asym. stretch	1108	s	Ar	IR	Snelson, 1966
	3	Asym. stretch	1100	s	Kr	IR	Snelson, 1966

Additional references: Jacox, 1994, page 84; Buchler, Stauffer, et al., 1964

Notes

Strong

References

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

Lee and Potts, 1979
Lee, E.P.F.; Potts, A.W., An investigation of the valence shell electronic structure of alkaline earth halides by using Ab initio S. C. F. calculations and photoelectron spectroscopy, Proc. R. Soc. London A:, 1979, 365, 395. [all data]

Farber and Srivastava, 1974
Farber, M.; Srivastava, R.D., Dissociation energies of BeF and BeCl and the heat of formation of BeClF, J. Chem. Soc. Faraday Trans. 1, 1974, 70, 1581. [all data]

Hildenbrand and Theard, 1969
Hildenbrand, D.L.; Theard, L.P., Mass spectrometric measurement of the dissociation energies of BeCi and BeCl₂, J. Chem. Phys., 1969, 50, 5350. [all data]

Snelson, 1968
Snelson, A., Infrared spectra of the beryllium halides, J. Phys. Chem., 1968, 72, 1, 250, https://doi.org/10.1021/j100847a046 . [all data]

Snelson, 1966
Snelson, A., Infrared Spectra of Some Alkaline Earth Halides by the Matrix Isolation Technique, J. Phys. Chem., 1966, 70, 10, 3208, https://doi.org/10.1021/j100882a031 . [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]

Buchler, Stauffer, et al., 1964
Buchler, A.; Stauffer, J.L.; Klemperer, W., None, J. Am. Chem. Soc., 1964, 86, 21, 4544, https://doi.org/10.1021/ja01075a007 . [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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