NH2 Anion - The NIST WebBook

NH2 anion

• Formula: H2N-
• Molecular weight: 16.0231
• CAS Registry Number: 17655-31-1
• Information on this page:
  • Vibrational and/or electronic energy levels
  • References
  • Notes
• Other data available:
  • Reaction thermochemistry data
  • Gas phase ion energetics data
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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: A

Energy (cm-1)		Med.	Transition	λmin (nm)	λmax (nm)	References
Td = 6220 ± 40	gas	Feldman, 1971
Smyth and Brauman, 1972
Celotta, Bennett, et al., 1974
Wickham-Jones, Ervin, et al., 1989

State: X

Vib. sym.	No.	Approximate type of mode	cm-1		Med.	Method	References
a1	1	Sym. stretch	3121.93	gas	CC	Tack, Rosenbaum, et al., 1986Tack, Rosenbaum, et al., 1986, 2
2	Bend	1523	Ar	IR	Suzer and Andrews, 1988
b2	3	Asym. stretch	3190.29	gas	CC	Tack, Rosenbaum, et al., 1986, 2
3	Asym. stretch	3152	Ar	IR	Suzer and Andrews, 1988

Additional references: Jacox, 1994, page 26

Notes

d	Photodissociation threshold

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.

Feldman, 1971 Feldman, D., Photoablosung von Elektronen bei Si- und NH2-, Z. Naturforsch. A, 1971, 26, 1100. [all data]

Smyth and Brauman, 1972 Smyth, K.C.; Brauman, J.I., Photodetachment of electrons from amide and arsenide ions: The electron affinities of NH2 and AsH2., J. Chem. Phys., 1972, 56, 4620. [all data]

Celotta, Bennett, et al., 1974 Celotta, R.S.; Bennett, R.A.; Hall, J.L., Laser Photodetachment Determination of the Electron Affinities of OH, NH2, NH, SO2, and S2, J. Chem. Phys., 1974, 60, 5, 1740, https://doi.org/10.1063/1.1681268 . [all data]

Wickham-Jones, Ervin, et al., 1989 Wickham-Jones, C.T.; Ervin, K.M.; Ellison, G.B.; Lineberger, W.C., NH2 Electron Affinity, J. Chem. Phys., 1989, 91, 4, 2762, https://doi.org/10.1063/1.456994 . [all data]

Tack, Rosenbaum, et al., 1986 Tack, L.M.; Rosenbaum, N.H.; Owrutsky, J.C.; Saykally, R.J., Velocity modulation infrared laser spectroscopy of negative ions: Measurement of the ν1 vibration of amide (NH-2), J. Chem. Phys., 1986, 84, 12, 7056, https://doi.org/10.1063/1.450631 . [all data]

Tack, Rosenbaum, et al., 1986, 2 Tack, L.M.; Rosenbaum, N.H.; Owrutsky, J.C.; Saykally, R.J., Velocity modulation infrared laser spectroscopy and structure of the amide anion (NH-2 ), J. Chem. Phys., 1986, 85, 8, 4222, https://doi.org/10.1063/1.451792 . [all data]

Suzer and Andrews, 1988 Suzer, S.; Andrews, L., Matrix infrared study of NH-2 produced by electron impact on NH3, J. Chem. Phys., 1988, 89, 8, 5347, https://doi.org/10.1063/1.455604 . [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]

Notes

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• Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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