Amidogen, methylene-

Formula: CH₂N
Molecular weight: 28.0333
IUPAC Standard InChI: InChI=1S/CH2N/c1-2/h1H2
IUPAC Standard InChIKey: PZIDJKOIMRBQLL-UHFFFAOYSA-N
CAS Registry Number: 15845-29-1
Chemical structure:
This structure is also available as a 2d Mol file or as a computed 3d SD file
The 3d structure may be viewed using Java or Javascript.
Permanent link for this species. Use this link for bookmarking this species for future reference.
Information on this page:
Other data available:
- Gas phase ion energetics data
Data at other public NIST sites:
- Gas Phase Kinetics Database
Options:
- Switch to calorie-based units

Vibrational and/or electronic energy levels

State: B

Energy (cm^-1)	Med.	Transition	λ_min (nm)	λ_max (nm)	References


T_o = 35047	gas	B-X	280	285	Ogilvie and Horne, 1968
					Horne and Norrish, 1970
					Ogilvie, 1974
					Bernard, Strazisar, et al., 1999
					Nizamov and Dagdigian, 2003
					Teslja, Dagdigian, et al., 2006
T_o = 34990 ± 25	Ar	B-X	270	285	Jacox, 1987

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


a₁	1	CH₂ s-stretch	2774 ± 50	T	Ar	AB	Jacox, 1987
	2	CN stretch	1883 ± 50		Ar	AB	Jacox, 1987
	3	CH₂ scissors	1413 ± 50		Ar	AB	Jacox, 1987
b₁	4	OPLA	270	H	gas	CR	Teslja, Dagdigian, et al., 2006
	4	OPLA	223	H	Ar	AB	Jacox, 1987

State: X

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


a₁	1	CH₂ s-stretch	2820	T	gas	PE	Cowles, Travers, et al., 1991
	2	CN stretch	1725.4	w	Ar	IR	Jacox, 1987
	3	CH₂ scissors	1337	T	gas	PE	Cowles, Travers, et al., 1991
	3	CH₂ scissors	1336.6	m	Ar	IR	Jacox, 1987
	3	CH₂ scissors	1332.7		Kr	IR	Pettersson, Lundell, et al., 1998
	3	CH₂ scissors	1328.7		Xe	IR	Pettersson, Lundell, et al., 1998
b₁	4	OPLA	954.1	w m	Ar	IR	Jacox, 1987
	4	OPLA	950.3		Kr	IR	Pettersson, Lundell, et al., 1998
b₂	5	CH₂ a-stretch	3103.2	m	Ar	IR	Jacox, 1987
	6	CH₂ rock	912.8	w	Ar	IR	Jacox, 1987
	6	CH₂ rock	909.0		Kr	IR	Pettersson, Lundell, et al., 1998

Additional references: Jacox, 1994, page 140; Jacox, 2003, page 171; Cochran, Adrian, et al., 1962; Banks and Gordy, 1973; Yamamoto and Saito, 1992

Notes

Weak

Medium

(1/2)(2ν)

Tentative assignment or approximate value

Energy separation between the v = 0 levels of the excited and electronic ground states.

References

Go To: Top, Vibrational and/or electronic energy levels, Notes

Ogilvie and Horne, 1968
Ogilvie, J.F.; Horne, D.G., Electronic Absorption Spectra of Methanal Azine and the Methyleniminyl Free Radical, J. Chem. Phys., 1968, 48, 5, 2248, https://doi.org/10.1063/1.1669419 . [all data]

Horne and Norrish, 1970
Horne, D.G.; Norrish, R.G.W., The Photolysis of Acyclic Azines and the Electronic Spectra of RFormulaRFormulaCNFormula Radicals, Proc. Roy. Soc. (London) A315, 1970, 315, 1522, 301, https://doi.org/10.1098/rspa.1970.0045 . [all data]

Ogilvie, 1974
Ogilvie, J.F., Can. J. Spectrosc., 1974, 19, 89. [all data]

Bernard, Strazisar, et al., 1999
Bernard, E.J.; Strazisar, B.R.; Davis, H.F., Excited state dynamics of H2CN radicals, Chem. Phys. Lett., 1999, 313, 3-4, 461, https://doi.org/10.1016/S0009-2614(99)01062-3 . [all data]

Nizamov and Dagdigian, 2003
Nizamov, B.; Dagdigian, P.J., Spectroscopic and Kinetic Investigation of Methylene Amidogen by Cavity Ring-Down Spectroscopy, J. Phys. Chem. A, 2003, 107, 13, 2256, https://doi.org/10.1021/jp022197i . [all data]

Teslja, Dagdigian, et al., 2006
Teslja, A.; Dagdigian, P.J.; Banck, M.; Eisfeld, W., Experimental and Theoretical Study of the Electronic Spectrum of the Methylene Amidogen Radical (H, J. Phys. Chem. A, 2006, 110, 25, 7826, https://doi.org/10.1021/jp061578j . [all data]

Jacox, 1987
Jacox, M.E., Vibrational and electronic spectra of the hydrogen atom + hydrogen cyanide reaction products trapped in solid argon, J. Phys. Chem., 1987, 91, 27, 6595, https://doi.org/10.1021/j100311a008 . [all data]

Cowles, Travers, et al., 1991
Cowles, D.C.; Travers, M.J.; Frueh, J.L.; Ellison, G.B., Photoelectron Spectroscopy of CH2N-, J. Chem. Phys., 1991, 94, 5, 3517, https://doi.org/10.1063/1.459773 . [all data]

Pettersson, Lundell, et al., 1998
Pettersson, M.; Lundell, J.; Khriachtchev, L.; Rasanen, M., Neutral rare-gas containing charge-transfer molecules in solid matrices. III. HXeCN, HXeNC, and HKrCN in Kr and Xe, J. Chem. Phys., 1998, 109, 2, 618, https://doi.org/10.1063/1.476599 . [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]

Cochran, Adrian, et al., 1962
Cochran, E.L.; Adrian, F.J.; Bowers, V.A., ESR Detection of the Cyanogen and Methylene Imino Free Radicals, J. Chem. Phys., 1962, 36, 7, 1938, https://doi.org/10.1063/1.1701294 . [all data]

Banks and Gordy, 1973
Banks, D.; Gordy, W., Electron spin resonance and bond structure of H, Mol. Phys., 1973, 26, 6, 1555, https://doi.org/10.1080/00268977300102721 . [all data]

Yamamoto and Saito, 1992
Yamamoto, S.; Saito, S., The microwave spectrum of the CH2N radical in the X 2B2 ground electronic state, J. Chem. Phys., 1992, 96, 6, 4157, https://doi.org/10.1063/1.461871 . [all data]

Notes

Go To: Top, Vibrational and/or electronic energy levels, References

Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
The National Institute of Standards and Technology (NIST) uses its best efforts to deliver a high quality copy of the Database and to verify that the data contained therein have been selected on the basis of sound scientific judgment. However, NIST makes no warranties to that effect, and NIST shall not be liable for any damage that may result from errors or omissions in the Database.
Customer support for NIST Standard Reference Data products.