Nitrogen tetrahydride

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:   3p 2F2
 Energy 
 (cm-1) 		  Med.   Transition   λmin 
 (nm) 		  λmax 
 (nm) 		  References
To = 15078 T gas 3p2F2-3s2A1 664 664 Schuler, Michel, et al., 1955
Herzberg, 1981
Herzberg, 1984

State:   3s

Vib. 
sym. 		  No.   Approximate 
 type of mode 		  cm-1   Med.   Method   References
a1 1 NH stretch 2552 T gas EM Schuler, Michel, et al., 1955
Herzberg, 1984
e 2 Deformation 1581 T gas EM Schuler, Michel, et al., 1955
Herzberg, 1984

Additional references: Jacox, 1994, page 229; Jacox, 1998, page 266; Jacox, 2003, page 246; Whittaker, Sullivan, et al., 1984; Alberti, Huber, et al., 1984; Huber and Sears, 1985; Watson, 1986; Signorell, Palm, et al., 1997

Notes

TTentative assignment or approximate value
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.

Schuler, Michel, et al., 1955
Schuler, H.; Michel, A.; Grun, A.E., Z. Naturforsch. A, 1955, 10, 1. [all data]

Herzberg, 1981
Herzberg, G., Rydberg spectra of triatomic hydrogen and of the ammonium radical, Disc. Faraday Soc., 1981, 71, 165, https://doi.org/10.1039/dc9817100165 . [all data]

Herzberg, 1984
Herzberg, G., Spectra of the ammonium radical: the schüler bands, J. Astrophys. Astron., 1984, 5, 2, 131, https://doi.org/10.1007/BF02714985 . [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]

Whittaker, Sullivan, et al., 1984
Whittaker, E.A.; Sullivan, B.J.; Bjorklund, G.C.; Wendt, H.R.; Hunziker, H.E., ND4 Schuler band absorption observed by laser FM spectroscopy in a photochemical reaction, J. Chem. Phys., 1984, 80, 2, 961, https://doi.org/10.1063/1.446757 . [all data]

Alberti, Huber, et al., 1984
Alberti, F.; Huber, K.P.; Watson, J.K.G., Absorption spectrum and analysis of the ND4 Schüler band, J. Mol. Spectrosc., 1984, 107, 1, 133, https://doi.org/10.1016/0022-2852(84)90272-8 . [all data]

Huber and Sears, 1985
Huber, K.P.; Sears, T.J., Emission spectra in a supersonic expansion: the quartet system of NO and the Schüler band of ND4, Chem. Phys. Lett., 1985, 113, 2, 129, https://doi.org/10.1016/0009-2614(85)80930-1 . [all data]

Watson, 1986
Watson, J.K.G., Proc. l7th International Symposium on Free Radicals, 1986, Nat. Bur. Stand. (U. S.) Spec. Publ. 716, K. M. Evenson, Ed., pp. 650-670. [all data]

Signorell, Palm, et al., 1997
Signorell, R.; Palm, H.; Merkt, F., Structure of the ammonium radical from a rotationally resolved photoelectron spectrum, J. Chem. Phys., 1997, 106, 16, 6523, https://doi.org/10.1063/1.473653 . [all data]

Notes

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