t-HONO

Formula: HNO₂
Molecular weight: 47.0134
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Vibrational and/or electronic energy levels

State: B

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


T_x = 46500	gas	B-X	200	275	Cox and Derwent, 1976

State: A

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


T_o = 26034	gas	A-X	315	385	Melvin and Wulf, 1935
					Tarte, 1950
					Porter, 1951
					King and Moule, 1962
					Pagsberg, Bjergbakke, et al., 1997

Vib. sym.	Approximate type of mode	cm^-1	Med.	Method	References


a'	NO stretch	1117	gas	AB	King and Moule, 1962

State: X

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


a'	1	OH stretch	3590.71	m	gas	IR	Jones, Badger, et al., 1951 D'Or and Tarte, 1951 McGraw, Bernitt, et al., 1966 Kagann and Maki, 1983 Deeley and Mills, 1983 Guilmot, Carleer, et al., 1990
	1	OH stretch	3572.6		Ar	IR	Mielke, Tokhadze, et al., 1996
	1	OH stretch	3568.5		Ar	IR	Mielke, Tokhadze, et al., 1996
	1	OH stretch	3551.8		Kr	IR	Khriachtchev, Lundell, et al., 2000
	1	OH stretch	3558		N₂	IR	Hall and Pimentel, 1963
	2	N=O stretch	1699.76	s	gas	IR LS	Jones, Badger, et al., 1951 D'Or and Tarte, 1951 McGraw, Bernitt, et al., 1966 Allegrini, Johns, et al., 1980 Guilmot, Godefroid, et al., 1993
	2	N=O stretch	1699.76	s	gas	DL	Kagann and Maki, 1983 Deeley and Mills, 1983 Maki and Sams, 1983
	2	N=O stretch	1689.1		Ar	IR	Guillory and Hunter, 1971 Crowley and Sodeau, 1989 Mielke, Tokhadze, et al., 1996
	2	N=O stretch	1688.0		Ar	IR	Guillory and Hunter, 1971 Crowley and Sodeau, 1989 Mielke, Tokhadze, et al., 1996
	2	N=O stretch	1684.0		Kr	IR	Khriachtchev, Lundell, et al., 2000
	2	N=O stretch	1684		N₂	IR	Hall and Pimentel, 1963
	3	HON bend	1263.21	s	gas	IR DL	Jones, Badger, et al., 1951 D'Or and Tarte, 1951 McGraw, Bernitt, et al., 1966 Kagann and Maki, 1983 Deeley and Mills, 1983 Maki, 1988 Guilmot, Godefroid, et al., 1993 Barney, Wingen, et al., 2000
	3	HON bend	1265.8		Ar	IR	Mielke, Tokhadze, et al., 1996
	3	HON bend	1263.9		Ar	IR	Mielke, Tokhadze, et al., 1996
	3	HON bend	1265.3		Kr	IR	Khriachtchev, Lundell, et al., 2000
	3	HON bend	1298		N₂	IR	Hall and Pimentel, 1963
	4	O-N stretch	790.12	s	gas	IR	Jones, Badger, et al., 1951 D'Or and Tarte, 1951 McGraw, Bernitt, et al., 1966 Kagann and Maki, 1983 Deeley and Mills, 1983 Kleiner, Guilmot, et al., 1991 Barney, Wingen, et al., 2000
	4	O-N stretch	800.4		Ar	IR	Guillory and Hunter, 1971 Crowley and Sodeau, 1989 Mielke, Tokhadze, et al., 1996
	4	O-N stretch	796.6		Ar	IR	Guillory and Hunter, 1971 Crowley and Sodeau, 1989 Mielke, Tokhadze, et al., 1996
	4	O-N stretch	794.5		Kr	IR	Khriachtchev, Lundell, et al., 2000
	4	O-N stretch	815		N₂	IR	Hall and Pimentel, 1963
	5	ONO bend	595.6	s	gas	IR	Jones, Badger, et al., 1951 D'Or and Tarte, 1951 McGraw, Bernitt, et al., 1966 Deeley and Mills, 1983
	5	ONO bend	608.7		Ar	IR	Mielke, Tokhadze, et al., 1996
	5	ONO bend	606.7		Kr	IR	Khriachtchev, Lundell, et al., 2000
	5	ONO bend	625		N₂	IR	Hall and Pimentel, 1963
a	6	Torsion	543.0	m	gas	IR	Jones, Badger, et al., 1951 D'Or and Tarte, 1951 McGraw, Bernitt, et al., 1966 Deeley and Mills, 1983
	6	Torsion	549.4		Ar	IR	Guillory and Hunter, 1971 Mielke, Tokhadze, et al., 1996
	6	Torsion	549.1		Kr	IR	Khriachtchev, Lundell, et al., 2000
	6	Torsion	583		N₂	IR	Hall and Pimentel, 1963

Additional references: Jacox, 1994, page 172; Jacox, 2003, page 196; Cox and Kuczkowski, 1966; Cox, Brittain, et al., 1971; Finnigan, Cox, et al., 1972; Bowman, DeLucia, et al., 1981; Dehayem-Kamadjeu, Pirali, et al., 2005; Dehayem-Kamadjeu, Orphal, et al., 2006

Notes

Medium

Strong

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

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Cox and Derwent, 1976
Cox, R.A.; Derwent, R.G., The ultra-violet absorption spectrum of gaseous nitrous acid, J. Photochem., 1976, 6, 1, 23, https://doi.org/10.1016/0047-2670(76)87004-9 . [all data]

Melvin and Wulf, 1935
Melvin, E.H.; Wulf, O.R., Ultraviolet Absorption of Mixtures of NO, NO2 and H2O, J. Chem. Phys., 1935, 3, 12, 755, https://doi.org/10.1063/1.1749588 . [all data]

Tarte, 1950
Tarte, P., Bull. Soc. Chim. Belges, 1950, 59, 365. [all data]

Porter, 1951
Porter, G., Isotope Effect in the Band Spectrum of HNO2, J. Chem. Phys., 1951, 19, 10, 1278, https://doi.org/10.1063/1.1748012 . [all data]

King and Moule, 1962
King, G.W.; Moule, D., THE ULTRAVIOLET ABSORPTION SPECTRUM OF NITROUS ACID IN THE VAPOR STATE, Can. J. Chem., 1962, 40, 11, 2057, https://doi.org/10.1139/v62-316 . [all data]

Pagsberg, Bjergbakke, et al., 1997
Pagsberg, P.; Bjergbakke, E.; Ratajczak, E.; Sillesen, A., Kinetics of the gas phase reaction OH + NO(+M)→HONO(+M) and the determination of the UV absorption cross sections of HONO, Chem. Phys. Lett., 1997, 272, 5-6, 383, https://doi.org/10.1016/S0009-2614(97)00576-9 . [all data]

Jones, Badger, et al., 1951
Jones, L.H.; Badger, R.M.; Moore, G.E., The Infrared Spectrum and the Structure of Gaseous Nitrous Acid, J. Chem. Phys., 1951, 19, 12, 1599, https://doi.org/10.1063/1.1748129 . [all data]

D'Or and Tarte, 1951
D'Or, L.; Tarte, P., Bull. Soc. Roy. Sci. Liege, 1951, 20, 478. [all data]

McGraw, Bernitt, et al., 1966
McGraw, G.E.; Bernitt, D.L.; Hisatsune, I.C., Infrared Spectra of Isotopic Nitrous Acids, J. Chem. Phys., 1966, 45, 5, 1392, https://doi.org/10.1063/1.1727772 . [all data]

Kagann and Maki, 1983
Kagann, R.H.; Maki, A.G., Infrared absorption intensities of nitrous acid (HONO) fundamental bands, J. Quant. Spectrosc. Radiat. Transfer, 1983, 30, 1, 37, https://doi.org/10.1016/0022-4073(83)90071-7 . [all data]

Deeley and Mills, 1983
Deeley, C.M.; Mills, I.M., The infrared vibration---rotation spectrum of trans and cis nitrous acid, J. Mol. Struct., 1983, 100, 199, https://doi.org/10.1016/0022-2860(83)90092-3 . [all data]

Guilmot, Carleer, et al., 1990
Guilmot, J.M.; Carleer, M.; Godefroid, M.; Herman, M., The ν1 fundamental band of trans-HNO2, J. Mol. Spectrosc., 1990, 143, 1, 81, https://doi.org/10.1016/0022-2852(90)90262-O . [all data]

Mielke, Tokhadze, et al., 1996
Mielke, Z.; Tokhadze, K.G.; Latajka, Z.; Ratajczak, E., Spectroscopic and Theoretical Studies of the Complexes between Nitrous Acid and Ammonia, J. Phys. Chem., 1996, 100, 2, 539, https://doi.org/10.1021/jp952171+ . [all data]

Khriachtchev, Lundell, et al., 2000
Khriachtchev, L.; Lundell, J.; Isoniemi, E.; Rasanen, M., HONO in solid Kr: Site-selective trans↔cis isomerization with narrow-band infrared radiation, J. Chem. Phys., 2000, 113, 10, 4265, https://doi.org/10.1063/1.1287617 . [all data]

Hall and Pimentel, 1963
Hall, R.T.; Pimentel, G.C., Isomerization of Nitrous Acid: An Infrared Photochemical Reaction, J. Chem. Phys., 1963, 38, 8, 1889, https://doi.org/10.1063/1.1733892 . [all data]

Allegrini, Johns, et al., 1980
Allegrini, M.; Johns, J.W.C.; McKellar, A.R.W.; Pinson, P., Stark spectroscopy with the CO laser: The ν2 fundamental bands of trans- and cis-nitrous acid, HNO2, in the 6-μm region, J. Mol. Spectrosc., 1980, 79, 2, 446, https://doi.org/10.1016/0022-2852(80)90225-8 . [all data]

Guilmot, Godefroid, et al., 1993
Guilmot, J.-M.; Godefroid, M.; Herman, M., Rovibrational Parameters for trans-Nitrous Acid, J. Mol. Spectrosc., 1993, 160, 2, 387, https://doi.org/10.1006/jmsp.1993.1186 . [all data]

Maki and Sams, 1983
Maki, A.G.; Sams, R.L., Diode laser spectra of cis-HONO near 850 cm-1 and trans-HONO near 1700 cm-1, J. Mol. Struct., 1983, 100, 215, https://doi.org/10.1016/0022-2860(83)90093-5 . [all data]

Guillory and Hunter, 1971
Guillory, W.A.; Hunter, C.E., Study of H+NO2 in an Argon Matrix between 4 and 14°K; The Infrared Spectra of Matrix-Isolated cis- and trans-HONO, J. Chem. Phys., 1971, 54, 2, 598, https://doi.org/10.1063/1.1674884 . [all data]

Crowley and Sodeau, 1989
Crowley, J.N.; Sodeau, J.R., Reaction between the amidogen radical, NH2, and molecular oxygen in low-temperature matrixes, J. Phys. Chem., 1989, 93, 12, 4785, https://doi.org/10.1021/j100349a021 . [all data]

Maki, 1988
Maki, A.G., High-resolution measurements of the ν2 band of HNO3 and the ν3 band of trans-HONO, J. Mol. Spectrosc., 1988, 127, 1, 104, https://doi.org/10.1016/0022-2852(88)90012-4 . [all data]

Barney, Wingen, et al., 2000
Barney, W.S.; Wingen, L.M.; Lakin, M.J.; Brauers, T.; Stutz, J.; Finlayson-Pitts, B.J., Infrared Absorption Cross-Section Measurements for Nitrous Acid (HONO) at Room Temperature, J. Phys. Chem. A, 2000, 104, 8, 1692, https://doi.org/10.1021/jp9930503 . [all data]

Kleiner, Guilmot, et al., 1991
Kleiner, I.; Guilmot, J.M.; Carleer, M.; Herman, M., The ν4 fundamental bands of trans- and cis-HNO2, J. Mol. Spectrosc., 1991, 149, 2, 341, https://doi.org/10.1016/0022-2852(91)90290-Q . [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]

Cox and Kuczkowski, 1966
Cox, A.P.; Kuczkowski, R.L., None, J. Am. Chem. Soc., 1966, 88, 22, 5071, https://doi.org/10.1021/ja00974a005 . [all data]

Cox, Brittain, et al., 1971
Cox, A.P.; Brittain, A.H.; Finnigan, D.J., Microwave spectrum, structure, dipole moment and quadrupole coupling constants of cis and trans nitrous acids, Trans. Faraday Soc., 1971, 67, 2179, https://doi.org/10.1039/tf9716702179 . [all data]

Finnigan, Cox, et al., 1972
Finnigan, D.J.; Cox, A.P.; Brittain, A.H.; Smith, J.G., J. Chem. Soc., 1972, Faraday Trans. 2 68, 548. [all data]

Bowman, DeLucia, et al., 1981
Bowman, W.C.; DeLucia, F.C.; Helminger, P., Millimeter and submillimeter wave spectra of HNO2 (cis), HNO2 (trans), and HNO3, J. Mol. Spectrosc., 1981, 88, 2, 431, https://doi.org/10.1016/0022-2852(81)90194-6 . [all data]

Dehayem-Kamadjeu, Pirali, et al., 2005
Dehayem-Kamadjeu, A.; Pirali, O.; Orphal, J.; Kleiner, I.; Flaud, P.-M., The far-infrared rotational spectrum of nitrous acid (HONO) and its deuterated species (DONO) studied by high-resolution Fourier-transform spectroscopy, J. Mol. Spectrosc., 2005, 234, 1, 182, https://doi.org/10.1016/j.jms.2005.09.006 . [all data]

Dehayem-Kamadjeu, Orphal, et al., 2006
Dehayem-Kamadjeu, A.; Orphal, J.; Ibrahim, N.; Kleiner, I.; Bouba, O.; Flaud, J.-M., The υ1 fundamental bands of trans- and cis-DONO studied by high-resolution Fourier-transform spectroscopy, J. Mol. Spectrosc., 2006, 238, 1, 29, https://doi.org/10.1016/j.jms.2006.04.005 . [all data]

Notes

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

Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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