c-CHF=CH

Formula: C₂H₂F
Molecular weight: 45.0357
CAS Registry Number: 96607-19-1
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Vibrational and/or electronic energy levels

State: X

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


a'	1	CH stretch	3193	w m	Ar	IR	Goldschleger, Akimov, et al., 2001
	2	CH stretch	3026	w	Ar	IR	Goldschleger, Akimov, et al., 2001
	3	C=C stretch	1631	s	Ar	IR	Goldschleger, Akimov, et al., 2001
	3	C=C stretch	1623	vs	Ar	IR	Jacox, 1980
	4	HCF scissors	1263	w m	Ar	IR	Goldschleger, Akimov, et al., 2001
	4	HCF scissors	1211	w m	Ar	IR	Jacox, 1980
	5	CF stretch	1068	vs	Ar	IR	Jacox, 1980 Goldschleger, Akimov, et al., 2001
	6	C=CH deform.	698	m	Ar	IR	Goldschleger, Akimov, et al., 2001
	6	C=CH deform.	678	s	Ar	IR	Jacox, 1980
	7	C=CF deform.	462	m	Ar	IR	Jacox, 1980
a	8	HFC=C OPLA	785	s	Ar	IR	Jacox, 1980 Goldschleger, Akimov, et al., 2001
	9	Torsion	643	m	Ar	IR	Goldschleger, Akimov, et al., 2001
	9	Torsion	631	vs	Ar	IR	Jacox, 1980

Additional references: Jacox, 1994, page 257; Jacox, 2003, page 267

Notes

Weak

Medium

Strong

Very strong

References

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Goldschleger, Akimov, et al., 2001
Goldschleger, I.U.; Akimov, A.V.; Misochko, E.Ya.; Wight, C.A., Infrared and EPR Spectroscopic Studies of 2-C2H2F and 1-C2H2F Radicals Isolated in Solid Argon, J. Mol. Spectrosc., 2001, 205, 2, 269, https://doi.org/10.1006/jmsp.2000.8266 . [all data]

Jacox, 1980
Jacox, M.E., The reaction of F atoms with C2H2. Vibrational spectrum of the t-2-fluorovinyl free radical isolated in solid argon, Chem. Phys., 1980, 53, 3, 307, https://doi.org/10.1016/0301-0104(80)85120-2 . [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, 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

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Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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