cyc-(N=CHN=CHC)=CO

Formula: C₄H₂N₂O
Molecular weight: 94.0715
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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	3036.1	w	Ar	IR	Maier and Endres, 2000
	3	CCO stretch	2152.7	vs	Ar	IR	Maier and Endres, 2000
	4	Mixed	1493.5	m	Ar	IR	Maier and Endres, 2000
	5	C=C stretch	1402.0	w	Ar	IR	Maier and Endres, 2000
	6	Mixed	1359.0	m	Ar	IR	Maier and Endres, 2000
	7	Mixed	1278.3	w	Ar	IR	Maier and Endres, 2000
	8	CH deform.	1197.5	w	Ar	IR	Maier and Endres, 2000
	9	Mixed	1177.8	w	Ar	IR	Maier and Endres, 2000
	10	Mixed	1077.3	w	Ar	IR	Maier and Endres, 2000
	11	Ring deform.	946.4	m	Ar	IR	Maier and Endres, 2000
a	18	Ring deform.	627.1	w	Ar	IR	Maier and Endres, 2000
	19	Ring deform.	616.3	w	Ar	IR	Maier and Endres, 2000
	20	CCO deform.	537.4	w	Ar	IR	Maier and Endres, 2000

Additional references: Jacox, 2003, page 393

Notes

Weak

Medium

Very strong

References

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Maier and Endres, 2000
Maier, G.; Endres, J., Eur. J. Org. Chem., 2000, 2535. [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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