Azide radical

Formula: N₃
Molecular weight: 42.0201
IUPAC Standard InChI: InChI=1S/N3/c1-3-2
IUPAC Standard InChIKey: DUAJIKVIRGATIW-UHFFFAOYSA-N
CAS Registry Number: 12596-60-0
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.
Other names: Nitrogen, mol. (N3)
Permanent link for this species. Use this link for bookmarking this species for future reference.
Information on this page:
Other data available:
- Gas phase thermochemistry data
- Gas phase ion energetics data
Options:
- Switch to SI units

Data at NIST subscription sites:

NIST / TRC Web Thermo Tables, professional edition (thermophysical and thermochemical data)

NIST subscription sites provide data under the NIST Standard Reference Data Program, but require an annual fee to access. The purpose of the fee is to recover costs associated with the development of data collections included in such sites. Your institution may already be a subscriber. Follow the links above to find out more about the data in these sites and their terms of usage.

Vibrational and/or electronic energy levels

Go To: Top, References, Notes

Data compiled by: Marilyn E. Jacox

State: B

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


T_o = 36738.750 ± 0.002	gas	B-X	260	273	Thrush, 1956
					Douglas and Jones, 1965
					Beaman, Nelson, et al., 1987
					Continetti, Cyr, et al., 1991
					Haas and Gericke, 1991
T_x = 36800	N₂	B-X			Brazier, Bernath, et al., 1988

State: X

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


Σ_g⁺	1	Sym. stretch	1320	T	gas	LF	Beaman, Nelson, et al., 1987
	1	Sym. stretch	1287		N₂	IR	Tian, Facelli, et al., 1988
Π_u	2	Bend	457	T	gas	LF	Beaman, Nelson, et al., 1987
	2	Bend	472.0		N₂	IR	Tian, Facelli, et al., 1988 Zhou and Andrews, 2000
Σ_u⁺	3	Asym. stretch	1644.68		gas	LMR IR	Pahnke, Ashworth, et al., 1988 Brazier, Bernath, et al., 1988
	3	Asym. stretch	1636.1		Ar	IR	Andrews, Zhou, et al., 2000
	3	Asym. stretch	1657.7		N₂	IR	Tian, Facelli, et al., 1988 Zhou and Andrews, 2000 Andrews, Zhou, et al., 2000

Additional references: Jacox, 1994, page 82; Jacox, 2003, page 127

Notes

Tentative assignment or approximate value

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

Energy separation between the band maximum of the excited electronic state and the v = 0 level of the ground state.

References

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

Thrush, 1956
Thrush, B.A., The Detection of Free Radicals in the High Intensity Photolysis of Hydrogen Azide, Proc. Roy. Soc. (London) A235, 1956, 235, 1200, 143, https://doi.org/10.1098/rspa.1956.0071 . [all data]

Douglas and Jones, 1965
Douglas, A.E.; Jones, W.J., THE 2 700 Å BANDS OF THE N, Can. J. Phys., 1965, 43, 12, 2216, https://doi.org/10.1139/p65-216 . [all data]

Beaman, Nelson, et al., 1987
Beaman, R.A.; Nelson, T.; Richards, D.S.; Setser, D.W., Observation of azido radical by laser-induced fluorescence, J. Phys. Chem., 1987, 91, 24, 6090, https://doi.org/10.1021/j100308a006 . [all data]

Continetti, Cyr, et al., 1991
Continetti, R.E.; Cyr, D.R.; Metz, R.B.; Neumark, D.M., Fast beam studies of N3 photodissociation, Chem. Phys. Lett., 1991, 182, 5, 406, https://doi.org/10.1016/0009-2614(91)90098-T . [all data]

Haas and Gericke, 1991
Haas, T.; Gericke, K.-H., High Resolution Spectroscopy of N3 by Laser Induced Fluorescence, Ber. Bunsenges. Phys. Chem., 1991, 95, 10, 1289, https://doi.org/10.1002/bbpc.19910951021 . [all data]

Brazier, Bernath, et al., 1988
Brazier, C.R.; Bernath, P.F.; Burkholder, J.B.; Howard, C.J., Fourier transform spectroscopy of the ν3 band of the N3 radical, J. Chem. Phys., 1988, 89, 4, 1762, https://doi.org/10.1063/1.455122 . [all data]

Tian, Facelli, et al., 1988
Tian, R.; Facelli, J.C.; Michl, J., Vibrational and electronic spectra of matrix-isolated nitrogen trimer radical and azide, J. Phys. Chem., 1988, 92, 14, 4073, https://doi.org/10.1021/j100325a018 . [all data]

Zhou and Andrews, 2000
Zhou, M.; Andrews, L., Reactions of Laser-Ablated Ga, In, and Tl Atoms with Nitrogen Atoms and Molecules. Infrared Spectra and Density Functional Calculations of GaN, NGaN, NInN, and the M, J. Phys. Chem. A, 2000, 104, 8, 1648, https://doi.org/10.1021/jp993429p . [all data]

Pahnke, Ashworth, et al., 1988
Pahnke, R.; Ashworth, S.H.; Brown, J.M., Detection of the N3 free radical by laser magnetic resonance at 6.08 μm, Chem. Phys. Lett., 1988, 147, 2-3, 179, https://doi.org/10.1016/0009-2614(88)85079-6 . [all data]

Andrews, Zhou, et al., 2000
Andrews, L.; Zhou, M.; Chertihin, G.V.; Bare, W.D.; Hannachi, Y., Reactions of Laser-Ablated Aluminum Atoms with Nitrogen Atoms and Molecules. Infrared Spectra and Density Functional Calculations for the AlN, J. Phys. Chem. A, 2000, 104, 8, 1656, https://doi.org/10.1021/jp993517+ . [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]

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.