Nitrosyl hydride

Formula: HNO
Molecular weight: 31.0140
IUPAC Standard InChI: InChI=1S/HNO/c1-2/h1H
IUPAC Standard InChIKey: ODUCDPQEXGNKDN-UHFFFAOYSA-N
CAS Registry Number: 14332-28-6
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.
Permanent link for this species. Use this link for bookmarking this species for future reference.
Information on this page:
Other data available:
Data at other public NIST sites:
Options:
- Switch to SI units

Vibrational and/or electronic energy levels

State: ?

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


T_o = 48240	gas	198	208	Callear and Wood, 1971

State: A

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


T_o = 13154.37	gas	A-X	550	770	Dalby, 1958
					Bancroft, Hollas, et al., 1962
					Dixon, Jones, et al., 1981
					Dixon and Rosser, 1985
					Ramsay and Zhu, 1995
					Pearson, Orr-Ewing, et al., 1997
T_o = 13118 ± 2	Ar	A-X	590	762	Robinson and McCarty, 1958
					Robinson and McCarty, 1958, 2

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


a'	1	NH stretch	2854.17	gas	AB	Bancroft, Hollas, et al., 1962
	2	Bend	981.18	gas	AB	Dalby, 1958
	2	Bend	982	Ar	AB	Robinson and McCarty, 1958 Robinson and McCarty, 1958, 2
	3	NO stretch	1420.77	gas	AB	Dalby, 1958
	3	NO stretch	1422	Ar	AB	Robinson and McCarty, 1958 Robinson and McCarty, 1958, 2

State: ?

Energy (cm^-1)	Med.	References


T_d = 16450 ± 20	gas	Dixon, Jones, et al., 1981

State: a

Energy (cm^-1)	Med.	References


T_o = 6280 ± 160	gas	Ellis and Ellison, 1983

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


a'	2	Bend	992 ± 150	gas	PE	Ellis and Ellison, 1983
	3	NO stretch	1468 ± 140	gas	PE	Ellis and Ellison, 1983

State: X

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


a'	1	NH stretch	2683.95		gas	IR EM	Clough, Thrush, et al., 1973 Johns, McKellar, et al., 1983 Petersen and Vervloet, 1987
	1	NH stretch	2716.3	w m	Ar	IR	Jacox and Milligan, 1973
	1	NH stretch	2756	m	N₂	IR	Jacox and Milligan, 1973
	2	Bend	1500.82		gas	LS	Johns and McKellar, 1977
	2	Bend	1505	w	Ar	IR	Jacox and Milligan, 1973
	2	Bend	1511	w	N₂	IR	Jacox and Milligan, 1973
	3	NO stretch	1565.34		gas	LS	Johns and McKellar, 1977
	3	NO stretch	1563.2	vs	Ar	IR	Jacox and Milligan, 1973
	3	NO stretch	1568.5	s	N₂	IR	Jacox and Milligan, 1973

Additional references: Jacox, 1994, page 45; Jacox, 1998, page 151; Takagi and Saito, 1972; Saito and Takagi, 1973; Takagi, Saito, et al., 1980; Dixon, Noble, et al., 1981; Obi, Matsumi, et al., 1983; Petersen, Saito, et al., 1984; Dixon and Rosser, 1984; Sastry, Helminger, et al., 1984; Petersen, 1985; Mayama, Egashira, et al., 1989; Boucher, Burie, et al., 1996

Notes

Weak

Medium

Strong

Very strong

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

Photodissociation threshold

References

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

Callear and Wood, 1971
Callear, A.B.; Wood, P.M., A system of HNO in the far ultra-violet and measurement of its oscillator strength, Trans. Faraday Soc., 1971, 67, 3399, https://doi.org/10.1039/tf9716703399 . [all data]

Dalby, 1958
Dalby, F.W., THE SPECTRUM AND STRUCTURE OF THE HNO MOLECULE, Can. J. Phys., 1958, 36, 10, 1336, https://doi.org/10.1139/p58-138 . [all data]

Bancroft, Hollas, et al., 1962
Bancroft, J.L.; Hollas, J.M.; Ramsay, D.A., THE ABSORPTION SPECTRA OF HNO AND DNO, Can. J. Phys., 1962, 40, 3, 322, https://doi.org/10.1139/p62-032 . [all data]

Dixon, Jones, et al., 1981
Dixon, R.N.; Jones, K.B.; Noble, M.; Carter, S., The mechanism of HNO predissociation, Mol. Phys., 1981, 42, 2, 455, https://doi.org/10.1080/00268978100100391 . [all data]

Dixon and Rosser, 1985
Dixon, R.N.; Rosser, C.A., The characterization of the complete set of bound vibronic states of HNO in its excited electronic state, J. Mol. Spectrosc., 1985, 110, 2, 262, https://doi.org/10.1016/0022-2852(85)90294-2 . [all data]

Ramsay and Zhu, 1995
Ramsay, D.A.; Zhu, Q.-S., J. Chem. Soc., 1995, Faraday Trans. 91, 2975. [all data]

Pearson, Orr-Ewing, et al., 1997
Pearson, J.; Orr-Ewing, A.J.; Ashfold, M.N.R.; Dixon, R.N., Spectroscopy and predissociation dynamics of the A [sup 1]A[sup ´´] state of HNO, J. Chem. Phys., 1997, 106, 14, 5850, https://doi.org/10.1063/1.473252 . [all data]

Robinson and McCarty, 1958
Robinson, G.W.; McCarty, M., Jr., Electronic Spectra of Free Radicals at 4°K[Single Bond]HNO, NH, and OH, J. Chem. Phys., 1958, 28, 2, 350, https://doi.org/10.1063/1.1744123 . [all data]

Robinson and McCarty, 1958, 2
Robinson, G.W.; McCarty, M., Jr., RADICAL SPECTRA AT LIQUID HELIUM TEMPERATURES, Can. J. Phys., 1958, 36, 11, 1590, https://doi.org/10.1139/p58-160 . [all data]

Ellis and Ellison, 1983
Ellis, H.B., Jr.; Ellison, G.B., Photoelectron spectroscopy of HNO- and DNO-, J. Chem. Phys., 1983, 78, 6541. [all data]

Clough, Thrush, et al., 1973
Clough, P.N.; Thrush, B.A.; Ramsay, D.A.; Stamper, J.G., The vibrational frequencies of HNO, Chem. Phys. Lett., 1973, 23, 2, 155, https://doi.org/10.1016/0009-2614(73)80239-8 . [all data]

Johns, McKellar, et al., 1983
Johns, J.W.C.; McKellar, A.R.W.; Weinberger, E., The infrared spectrum of HNO, Can. J. Phys., 1983, 61, 7, 1106, https://doi.org/10.1139/p83-142 . [all data]

Petersen and Vervloet, 1987
Petersen, J.C.; Vervloet, M., Infrared emission spectrum of HNO: The ν1 band, Chem. Phys. Lett., 1987, 141, 6, 499, https://doi.org/10.1016/0009-2614(87)85068-6 . [all data]

Jacox and Milligan, 1973
Jacox, M.E.; Milligan, D.E., Matrix-isolation study of the reaction of H atoms with NO, J. Mol. Spectrosc., 1973, 48, 3, 536, https://doi.org/10.1016/0022-2852(73)90116-1 . [all data]

Johns and McKellar, 1977
Johns, J.W.C.; McKellar, A.R.W., Laser Stark spectroscopy of the fundamental bands of HNO (ν2 and ν3) and DNO (ν1 and ν2), J. Chem. Phys., 1977, 66, 3, 1217, https://doi.org/10.1063/1.434013 . [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]

Takagi and Saito, 1972
Takagi, K.; Saito, S., Microwave spectrum of DNO, J. Mol. Spectrosc., 1972, 44, 1, 81, https://doi.org/10.1016/0022-2852(72)90193-2 . [all data]

Saito and Takagi, 1973
Saito, S.; Takagi, K., Microwave spectrum of nitroxyl, J. Mol. Spectrosc., 1973, 47, 1, 99, https://doi.org/10.1016/0022-2852(73)90079-9 . [all data]

Takagi, Saito, et al., 1980
Takagi, K.; Saito, S.; Kakimoto, M.; Hirota, E., Microwave optical double resonance of HNO: Rotational spectrum in A1A´´(100)., J. Chem. Phys., 1980, 73, 6, 2570, https://doi.org/10.1063/1.440492 . [all data]

Dixon, Noble, et al., 1981
Dixon, R.N.; Noble, M.; Taylor, C.A.; Delhoume, M., Magnetic-field and time-resolved studies of the electronic spectrum of HNO, Disc. Faraday Soc., 1981, 71, 125, https://doi.org/10.1039/dc9817100125 . [all data]

Obi, Matsumi, et al., 1983
Obi, K.; Matsumi, Y.; Takeda, Y.; Mayama, S.; Watanabe, H.; Tsuchiya, S., Flourescence lifetimes anf excitation spectra of the jet-cooled HNO radical, Chem. Phys. Lett., 1983, 95, 6, 520, https://doi.org/10.1016/0009-2614(83)80345-5 . [all data]

Petersen, Saito, et al., 1984
Petersen, J.C.; Saito, S.; Amano, T.; Ramsay, D.A., Microwave-optical double resonance of HNO in the Ã, Can. J. Phys., 1984, 62, 12, 1731, https://doi.org/10.1139/p84-219 . [all data]

Dixon and Rosser, 1984
Dixon, R.N.; Rosser, C.A., Predissociation of the DNO molecule and the bond dissociation energy for DNO → D + NO, Chem. Phys. Lett., 1984, 108, 4, 323, https://doi.org/10.1016/0009-2614(84)85199-4 . [all data]

Sastry, Helminger, et al., 1984
Sastry, K.V.L.N.; Helminger, P.; Plummer, G.M.; Herbst, E.; De Lucia, F.C., Laboratory millimeter and submillimeter spectra of HNO and DNO, Astrophys. J. Suppl., 1984, 55, 563, https://doi.org/10.1086/190968 . [all data]

Petersen, 1985
Petersen, J.C., Doppler-limited dye laser excitation spectroscopy of DNO: Predissociation of DNO, J. Mol. Spectrosc., 1985, 110, 2, 277, https://doi.org/10.1016/0022-2852(85)90295-4 . [all data]

Mayama, Egashira, et al., 1989
Mayama, S.; Egashira, K.; Obi, K., Laser Induced Fluorescence of Hno and Dno A4a" - X1a' in a Supersonic Free Jet, Res. Chem. Intermed., 1989, 12, 3, 285, https://doi.org/10.1163/156856789X00311 . [all data]

Boucher, Burie, et al., 1996
Boucher, D.; Burie, J.; Chen, W.; Kabbadj, Y.; Mouret, G., Optogalvanic Spectrum of the (000)--(000) Band of theÃ1A´´--X1A´ System of HNO Using a Ti:Sapphire Laser, J. Mol. Spectrosc., 1996, 180, 2, 433, https://doi.org/10.1006/jmsp.1996.0267 . [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.