c-(NO)2

Formula: N₂O₂
Molecular weight: 60.0122
CAS Registry Number: 57932-56-6
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Vibrational and/or electronic energy levels

State: ?

Energy (cm^-1)	Med.	References


T_x = 48800	gas	Billingsley and Callear, 1971
		Forte and van den Bergy, 1978

State: X

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


a₁	1	NO s-stretch	1868.25		gas	IR Ra	Dinerman and Ewing, 1970 Matsumoto, Ohshima, et al., 1990 Howard and McKellar, 1993 Dkhissi, Lacome, et al., 1999 Fernandez, Tejeda, et al., 1999
	1	NO s-stretch	1867.2		Ne	IR	Jacox and Thompson, 1990 Kometer, Legay, et al., 1994 Legay and Legay-Sommaire, 1995 Andrews and Zhou, 1999
	1	NO s-stretch	1863.4	m	Ar	IR	Fateley, Bent, et al., 1959 Krim and Lacome, 1998
	1	NO s-stretch	1867.0		N₂	IR	Guillory and Hunter, 1969 Legay and Legay-Sommaire, 1995 Krim, 1998
	1	NO s-stretch	1862	m	CO₂	IR Ra	Fateley, Bent, et al., 1959 Ohlsen and Laane, 1978
	1	NO s-stretch	1866		NO	IR Ra	Durig and Griffin, 1976 Anderson and Lassier-Govers, 1977 Nour, Chen, et al., 1984
	2	N..N stretch	239.36		gas	IR	East, McKellar, et al., 1998 McKellar and Watson, 1999 Fernandez, Tejeda, et al., 1999
	2	N..N stretch	242.8		Ar	IR	Krim and Lacome, 1998
	2	N..N stretch	244.5		N₂	IR	Krim, 1998
	2	N..N stretch	262		CO₂	Ra	Ohlsen and Laane, 1978
	2	N..N stretch	266		NO	IR Ra	Durig and Griffin, 1976 Anderson and Lassier-Govers, 1977 Nour, Chen, et al., 1984
	3	NNO s-bend	134.50		gas	IR Ra	East, McKellar, et al., 1998 McKellar and Watson, 1999 Fernandez, Tejeda, et al., 1999
	3	NNO s-bend	175.5	T	Ar	IR	Krim and Lacome, 1998
a₂	4	Torsion	117	T	gas	IR	East, McKellar, et al., 1998
	4	Torsion	97	T	NO	IR Ra	Durig and Griffin, 1976 Anderson and Lassier-Govers, 1977 Nour, Chen, et al., 1984
b₂	5	NO a-stretch	1789.09		gas	IR DL	Dinerman and Ewing, 1970 Menoux, Le Doucen, et al., 1984 Brechignac, De Benedictis, et al., 1985 Matsumoto, Ohshima, et al., 1990 Watson and McKellar, 1997 Dkhissi, Soulard, et al., 1997
	5	NO a-stretch	1780.6		Ne	IR	Jacox and Thompson, 1990 Kometer, Legay, et al., 1994 Legay and Legay-Sommaire, 1995 Andrews and Zhou, 1999
	5	NO a-stretch	1778.7		Ne	IR	Jacox and Thompson, 1990 Kometer, Legay, et al., 1994 Legay and Legay-Sommaire, 1995 Andrews and Zhou, 1999
	5	NO a-stretch	1776.3	s	Ar	IR	Fateley, Bent, et al., 1959 Krim and Lacome, 1998
	5	NO a-stretch	1779.9		N₂	IR	Guillory and Hunter, 1969 Legay and Legay-Sommaire, 1995 Krim, 1998
	5	NO a-stretch	1768	s	CO₂	IR	Fateley, Bent, et al., 1959
	5	NO a-stretch	1762		NO	IR Ra	Anderson and Lassier-Govers, 1977 Nour, Chen, et al., 1984
	6	NNO a-bend	429.14		gas	IR	East, McKellar, et al., 1998

Additional references: Jacox, 1994, page 200; Jacox, 1998, page 254; Jacox, 2003, page 233; Western, Langridge-Smith, et al., 1981; Brookes, McKellar, et al., 1997

Notes

Medium

Strong

Tentative assignment or approximate value

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

Billingsley and Callear, 1971
Billingsley, J.; Callear, A.B., Investigation of the 2050 «65533» system of the nitric oxide dimer, Trans. Faraday Soc., 1971, 67, 589, https://doi.org/10.1039/tf9716700589 . [all data]

Forte and van den Bergy, 1978
Forte, E.; van den Bergy, H., The heat of formation of the nitric oxide dimer and its UV spectrum, Chem. Phys., 1978, 30, 3, 325, https://doi.org/10.1016/0301-0104(78)87004-9 . [all data]

Dinerman and Ewing, 1970
Dinerman, C.E.; Ewing, G.E., Infrared Spectrum, Structure, and Heat of Formation of Gaseous (NO)2, J. Chem. Phys., 1970, 53, 2, 626, https://doi.org/10.1063/1.1674038 . [all data]

Matsumoto, Ohshima, et al., 1990
Matsumoto, Y.; Ohshima, Y.; Takami, M., Mode-specific infrared photodissociation of nitric oxide dimers: High-resolution infrared spectroscopy of (14NO)2 and (15NO)2, J. Chem. Phys., 1990, 92, 2, 937, https://doi.org/10.1063/1.458076 . [all data]

Howard and McKellar, 1993
Howard, B.J.; McKellar, A.R.W., The, Mol. Phys., 1993, 78, 1, 55, https://doi.org/10.1080/00268979300100061 . [all data]

Dkhissi, Lacome, et al., 1999
Dkhissi, A.; Lacome, N.; Perrin, A., The NO Dimer, J. Mol. Spectrosc., 1999, 194, 2, 156, https://doi.org/10.1006/jmsp.1998.7780 . [all data]

Fernandez, Tejeda, et al., 1999
Fernandez, J.M.; Tejeda, G.; Ramos, A.; Howard, B.J.; Montero, S., Gas-Phase Raman Spectrum of NO Dimer, J. Mol. Spectrosc., 1999, 194, 2, 278, https://doi.org/10.1006/jmsp.1998.7797 . [all data]

Jacox and Thompson, 1990
Jacox, M.E.; Thompson, W.E., The vibrational spectra of molecular ions isolated in solid neon. IV. NO+, NO-, ONNO+, and ONNO-, J. Chem. Phys., 1990, 93, 11, 7609, https://doi.org/10.1063/1.459392 . [all data]

Kometer, Legay, et al., 1994
Kometer, R.; Legay, F.; Legay-Sommaire, N.; Schwentner, N., Vibrational spectroscopy of NO and (NO)2 isolated in solid neon, J. Chem. Phys., 1994, 100, 12, 8737, https://doi.org/10.1063/1.466728 . [all data]

Legay and Legay-Sommaire, 1995
Legay, F.; Legay-Sommaire, N., Infrared spectroscopy, infrared photoconversion, and ultraviolet photodissociation of NO dimers in neon and nitrogen matrices, J. Chem. Phys., 1995, 102, 20, 7798, https://doi.org/10.1063/1.469033 . [all data]

Andrews and Zhou, 1999
Andrews, L.; Zhou, M., Infrared spectra of (NO)[sub 2][sup -] and (NO)[sub 2][sup +] isomers trapped in solid neon, J. Chem. Phys., 1999, 111, 13, 6036, https://doi.org/10.1063/1.479900 . [all data]

Fateley, Bent, et al., 1959
Fateley, W.G.; Bent, H.A.; Crawford, B., Jr., Infrared Spectra of the Frozen Oxides of Nitrogen, J. Chem. Phys., 1959, 31, 1, 204, https://doi.org/10.1063/1.1730296 . [all data]

Krim and Lacome, 1998
Krim, L.; Lacome, N., The NO Dimer,, J. Phys. Chem. A, 1998, 102, 13, 2289, https://doi.org/10.1021/jp9733274 . [all data]

Guillory and Hunter, 1969
Guillory, W.A.; Hunter, C.E., Infrared Spectrum of Matrix-Isolated (NO)2, J. Chem. Phys., 1969, 50, 8, 3516, https://doi.org/10.1063/1.1671577 . [all data]

Krim, 1998
Krim, L., The NO dimer, 14N and 15N isotopomers isolated in nitrogen matrix: a near, mid and far infrared study, J. Mol. Struct., 1998, 471, 1-3, 267, https://doi.org/10.1016/S0022-2860(98)00487-6 . [all data]

Ohlsen and Laane, 1978
Ohlsen, J.R.; Laane, J., Characterization of the asymmetric nitric oxide dimer O:N:O:N by resonance Raman and infrared spectroscopy, J. Am. Chem. Soc., 1978, 100, 22, 6948, https://doi.org/10.1021/ja00490a030 . [all data]

Durig and Griffin, 1976
Durig, J.R.; Griffin, M.G., The Raman spectra of (14NO)2 and (15NO)2 solids at 20 K, J. Raman Spectrosc., 1976, 5, 3, 273, https://doi.org/10.1002/jrs.1250050308 . [all data]

Anderson and Lassier-Govers, 1977
Anderson, A.; Lassier-Govers, B., Infrared and raman spectra of crystalline nitric oxide, Chem. Phys. Lett., 1977, 50, 1, 124, https://doi.org/10.1016/0009-2614(77)80694-5 . [all data]

Nour, Chen, et al., 1984
Nour, E.M.; Chen, L.-H.; Strube, M.M.; Laane, J., Raman spectra and force constants for the nitric oxide dimer and its isotopic species, J. Phys. Chem., 1984, 88, 4, 756, https://doi.org/10.1021/j150648a028 . [all data]

East, McKellar, et al., 1998
East, A.L.L.; McKellar, A.R.W.; Watson, J.K.G., The intermolecular vibrations of the NO dimer, J. Chem. Phys., 1998, 109, 11, 4378, https://doi.org/10.1063/1.477040 . [all data]

McKellar and Watson, 1999
McKellar, A.R.W.; Watson, J.K.G., The Far Infrared Spectrum of the NO Dimer, J. Mol. Spectrosc., 1999, 194, 2, 229, https://doi.org/10.1006/jmsp.1998.7798 . [all data]

Menoux, Le Doucen, et al., 1984
Menoux, V.; Le Doucen, R.; Haeusler, C.; Deroche, J.C., Etude à basse température dans l'infrarouge proche du dimère (NO), Can. J. Phys., 1984, 62, 4, 322, https://doi.org/10.1139/p84-048 . [all data]

Brechignac, De Benedictis, et al., 1985
Brechignac, Ph.; De Benedictis, S.; Halberstadt, N.; Whitaker, B.J.; Avrillier, S., Infrared absorption and predissociation of NO dimer, J. Chem. Phys., 1985, 83, 5, 2064, https://doi.org/10.1063/1.449348 . [all data]

Watson and McKellar, 1997
Watson, J.K.G.; McKellar, A.R.W., The v, Can. J. Phys., 1997, 75, 3, 181, https://doi.org/10.1139/p96-152 . [all data]

Dkhissi, Soulard, et al., 1997
Dkhissi, A.; Soulard, P.; Perrin, A.; Lacome, N., The NO Dimer, J. Mol. Spectrosc., 1997, 183, 1, 12, https://doi.org/10.1006/jmsp.1996.7249 . [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]

Western, Langridge-Smith, et al., 1981
Western, C.M.; Langridge-Smith, P.R.R.; Howard, B.J.; Novick, S.E., Molecular beam electric resonance spectroscopy of the nitric oxide dimer, Mol. Phys., 1981, 44, 1, 145, https://doi.org/10.1080/00268978100102341 . [all data]

Brookes, McKellar, et al., 1997
Brookes, M.D.; McKellar, A.R.W.; Amano, T., Millimeter-Wave Spectrum of the NO Dimer, J. Mol. Spectrosc., 1997, 185, 1, 153, https://doi.org/10.1006/jmsp.1997.7357 . [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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