ClDCl-

Vibrational and/or electronic energy levels

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


Σ_g⁺	1	Sym. stretch	267	T	Ar	IR	Noble and Pimentel, 1968 Milligan and Jacox, 1970 Wight, Ault, et al., 1976 Legay-Sommaire and Legay, 1999
	1	Sym. stretch	255.3	T	Ke	IR	Rasanen, Seetula, et al., 1993
Σ_u⁺	3	Asym. stretch	496.2		Ne	IR	Forney, Jacox, et al., 1995
	3	Asym. stretch	489.3		Ne	IR	Forney, Jacox, et al., 1995
	3	Asym. stretch	463		Ar	IR	Noble and Pimentel, 1968 Milligan and Jacox, 1970 Wight, Ault, et al., 1976 Fridgen, Zhang, et al., 2000
	3	Asym. stretch	437.7		Kr	IR	Rasanen, Seetula, et al., 1993 Fridgen, Zhang, et al., 2000

Tentative assignment or approximate value

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Noble and Pimentel, 1968
Noble, P.N.; Pimentel, G.C., Hydrogen Dichloride Radical: Infrared Detection through the Matrix Isolation Technique, J. Chem. Phys., 1968, 49, 7, 3165, https://doi.org/10.1063/1.1670565 . [all data]

Milligan and Jacox, 1970
Milligan, D.E.; Jacox, M.E., Infrared Spectrum of the ClHCl- Ion Isolated in an Argon Matrix, J. Chem. Phys., 1970, 53, 5, 2034, https://doi.org/10.1063/1.1674284 . [all data]

Wight, Ault, et al., 1976
Wight, C.A.; Ault, B.S.; Andrews, L., On microwave discharge sources of new chemical species for matrix-isolation spectroscopy and the identification of charged species, J. Chem. Phys., 1976, 65, 4, 1244, https://doi.org/10.1063/1.433233 . [all data]

Legay-Sommaire and Legay, 1999
Legay-Sommaire, N.; Legay, F., Photochemical insertion of Hg in the HCl bond and mercury-sensitized production of ClHCl- and KrHKr+ in low-temperature matrices, Chem. Phys. Lett., 1999, 314, 1-2, 40, https://doi.org/10.1016/S0009-2614(99)01120-3 . [all data]

Rasanen, Seetula, et al., 1993
Rasanen, M.; Seetula, J.; Kunttu, H., Photogeneration of ions via delocalized charge transfer states. II. HX2- (X=Cl,Br,I) in rare gas matrices, J. Chem. Phys., 1993, 98, 5, 3914, https://doi.org/10.1063/1.464018 . [all data]

Forney, Jacox, et al., 1995
Forney, D.; Jacox, M.E.; Thompson, W.E., The vibrational spectra of molecular ions isolated in solid neon. XII. HCl+, (HCl)+2, ClHCl-, and O2••HCl+, J. Chem. Phys., 1995, 103, 5, 1755, https://doi.org/10.1063/1.469749 . [all data]

Fridgen, Zhang, et al., 2000
Fridgen, T.D.; Zhang, X.K.; Parnis, J.M.; March, R.E., Isomerization and Fragmentation Products of CH, J. Phys. Chem. A, 2000, 104, 16, 3487, https://doi.org/10.1021/jp993162u . [all data]

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Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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