H2CBr+

Formula: CH₂Br⁺
Molecular weight: 93.930
CAS Registry Number: 70022-19-4
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Vibrational and/or electronic energy levels

State: X

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


a₁	1	CH₂ s-stretch	2998.7	s	Ar	IR	Ma, Chen, et al., 2009
	2	CBr stretch	860 ± 30		gas	PE	Andrews, Dyke, et al., 1983 Andrews, Dyke, et al., 1984
	2	CBr stretch	863.7	vs	Ar	IR	Ma, Chen, et al., 2009
	2	CBr stretch	876		Ar	IR	George, Kalume, et al., 2010
b₁	4	CH₂ wag	1024.7	m	Ar	IR	Ma, Chen, et al., 2009
	4	CH₂ wag	1084		Ar	IR	George, Kalume, et al., 2010
b₂	5	CH₂ a-stretch	3127.9	vs	Ar	IR	Ma, Chen, et al., 2009

Additional references: Jacox, 1994, page 147

Notes

Medium

Strong

Very strong

References

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Ma, Chen, et al., 2009
Ma, R.; Chen, M.; Zhou, M., Infrared Spectra of the Chloromethyl and Bromomethyl Cations in Solid Argon, J. Phys. Chem. A, 2009, 113, 46, 12926, https://doi.org/10.1021/jp9084266 . [all data]

Andrews, Dyke, et al., 1983
Andrews, L.; Dyke, J.M.; Jonathan, N.; Keddar, N.; Morris, A.; Ridha, A., The first band in the He(I) photoelectron spectrum of the CH2Cl free radical, Chem. Phys. Lett., 1983, 97, 1, 89, https://doi.org/10.1016/0009-2614(83)87190-5 . [all data]

Andrews, Dyke, et al., 1984
Andrews, L.; Dyke, J.M.; Jonathan, N.; Keddar, N.; orris, A., The first bands in the photoelectron spectra of the CH₂Br, CD₂Br, CHBr₂, and CH₂I free radicals, J. Phys. Chem., 1984, 88, 1950. [all data]

George, Kalume, et al., 2010
George, L.; Kalume, A.; Reid, S.A., Pulsed-jet discharge matrix isolation and computational study of CX2Br+ (X=H, F), Chem. Phys. Lett., 2010, 484, 4-6, 214, https://doi.org/10.1016/j.cplett.2009.11.040 . [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]

Notes

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Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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