HCNN

Vibrational and/or electronic energy levels

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Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.

Data compiled by: Marilyn E. Jacox

State:   B
 Energy 
 (cm-1) 		  Med.   Transition   λmin 
 (nm) 		  λmax 
 (nm) 		  References
To = 30500 gas A-X 289 328 Basco and Yee, 1968
Kroto, Morgan, et al., 1970
Vib. 
sym. 		  No.   Approximate 
 type of mode 		  cm-1   Med.   Method   References
1048 gas AB Kroto, Morgan, et al., 1970

State:   A
 Energy 
 (cm-1) 		  Med.   Transition   λmin 
 (nm) 		  λmax 
 (nm) 		  References
To = 4830 ± 720 gas Clifford, Wenthold, et al., 1998

State:   X

Vib. 
sym. 		  No.   Approximate 
 type of mode 		  cm-1   Med.   Method   References
a' 1 CH stretch 3233.7 w m Ar IR Ogilvie, 1968
Maier, Eckwert, et al., 1996
1 CH stretch 3229 m N2 IR Ogilvie, 1968
2 CNN a-stretch 1780 ± 77 gas PE Clifford, Wenthold, et al., 1998
2 CNN a-stretch 1786.6 s Ar IR Ogilvie, 1968
Maier, Eckwert, et al., 1996
2 CNN a-stretch 1784 s Kr IR Ogilvie, 1968
2 CNN a-stretch 1800 s N2 IR Ogilvie, 1968
H deform. 862.2 vs Ar IR Ogilvie, 1968
Maier, Eckwert, et al., 1996
H deform. 860 vs Kr IR Ogilvie, 1968
H deform. 871 m N2 IR Ogilvie, 1968
H deform. 863 m N2 IR Ogilvie, 1968
5 CNN deform. 485 ± 70 gas PE Clifford, Wenthold, et al., 1998

Additional references: Jacox, 1994, page 161; Jacox, 1998, page 235; Jacox, 2003, page 189; Herzberg and Travis, 1964; Sweeting and Mathews

Notes

wWeak
mMedium
sStrong
vsVery strong
oEnergy separation between the v = 0 levels of the excited and electronic ground states.

References

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Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.

Basco and Yee, 1968
Basco, N.; Yee, K.K., Chem. Commun., 1968, 150. [all data]

Kroto, Morgan, et al., 1970
Kroto, H.W.; Morgan, T.F.; Sheena, H.H., Flash photolysis of cyanogen azide, NCN3, Trans. Faraday Soc., 1970, 66, 2237, https://doi.org/10.1039/tf9706602237 . [all data]

Clifford, Wenthold, et al., 1998
Clifford, E.P.; Wenthold, P.G.; Lineberger, W.C.; Peterssom, G.A.; Broaddus, K.M.; Kass, S.R.; Kato, S., Properties of Diazocarbene [CNN] and the diazomethyl Radical [HCNN] via Ion Chemistry and Spectroscopy, J. Phys. Chem. A, 1998, 102, 36, 7100, https://doi.org/10.1021/jp9802735 . [all data]

Ogilvie, 1968
Ogilvie, J.F., Vibrational absorption of the trapped diazomethyl radical, Can. J. Chem., 1968, 46, 14, 2472, https://doi.org/10.1139/v68-405 . [all data]

Maier, Eckwert, et al., 1996
Maier, G.; Eckwert, J.; Bothur, A.; Reisenauer, H.P.; Schmidt, C., Liebigs Ann., 1996, 1041. [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, 1998
Jacox, M.E., Vibrational and electronic energy levels of polyatomic transient molecules: supplement A, J. Phys. Chem. Ref. Data, 1998, 27, 2, 115-393, https://doi.org/10.1063/1.556017 . [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]

Herzberg and Travis, 1964
Herzberg, G.; Travis, D.N., THE SPECTRUM AND STRUCTURE OF THE FREE NCN RADICAL, Can. J. Phys., 1964, 42, 8, 1658, https://doi.org/10.1139/p64-150 . [all data]

Sweeting and Mathews
Sweeting, B.R.; Mathews, C.W., Paper TH10, 44th Symposium on Molecular Spectroscopy, Columbus, Ohio, June 1989.. [all data]

Notes

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