Carbon monoxide

• Formula: CO
• Molecular weight: 28.0101
• IUPAC Standard InChI: InChI=1S/CO/c1-2 Copy

  
• IUPAC Standard InChIKey: UGFAIRIUMAVXCW-UHFFFAOYSA-N Copy
• CAS Registry Number: 630-08-0
• 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: Carbon oxide (CO); CO; Exhaust gas; Flue gas; Carbonic oxide; Carbon oxide; Carbone (oxyde de); Carbonio (ossido di); Kohlenmonoxid; Kohlenoxyd; Koolmonoxyde; NA 9202; Oxyde de carbone; UN 1016; Wegla tlenek; Carbon monooxide
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• Information on this page:
  • IR Spectrum
  • Constants of diatomic molecules
  • References
  • Notes
• Other data available:
  • Gas phase thermochemistry data
  • Phase change data
  • Reaction thermochemistry data: reactions 1 to 50, reactions 51 to 100, reactions 101 to 150, reactions 151 to 200, reactions 201 to 249
  • Henry's Law data
  • Gas phase ion energetics data
  • Ion clustering data
  • Mass spectrum (electron ionization)
  • Fluid Properties
• Data at other public NIST sites:
  • Microwave spectra (on physics lab web site)
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IR Spectrum

Go To: Top, Constants of diatomic molecules, References, Notes

Data compiled by: Coblentz Society, Inc.

• GAS (400 mmHg DILUTED TO A TOTAL PRESSURE OF 600 mmHg WITH N2); DOW KBr FOREPRISM; DIGITIZED BY NIST FROM HARD COPY (FROM TWO SEGMENTS); 4 cm^-1 resolution

Data compiled by: NIST Mass Spectrometry Data Center, William E. Wallace, director

• gas

Constants of diatomic molecules

Go To: Top, IR Spectrum, References, Notes

Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.

Data compiled by: Klaus P. Huber and Gerhard H. Herzberg

Data collected through October, 1976

Notes

References

Go To: Top, IR Spectrum, Constants of diatomic molecules, Notes

Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.

Nakamura, Morioka, et al., 1971
Nakamura; Morioka; Hayaishi; Ishiguro; Sasanuma, 3rd International Conference on Vacuum Ultraviolet Radiation Physics - Paper 1pA1-6, Tokyo, 1971, 0. [all data]

Lee, Carlson, et al., 1973
Lee, L.C.; Carlson, R.W.; Judge, D.L.; Ogawa, M., The absorption cross sections of N₂, O₂, CO, NO, CO₂, N₂O, CH₄, C₂H₄, C₂H₆ and C₄H₁₀ from 180 to 700 Å, J. Quant. Spectrosc. Radiat. Transfer, 1973, 13, 1023. [all data]

Watson, Stewart, et al., 1975
Watson, W.S.; Stewart, D.T.; Gardner, A.B.; Lynch, M.J., The photoabsorption coefficients of CO and CO₂ in the region 350 to 650Å, Planet. Space Sci., 1975, 23, 384. [all data]

Wight, van der Wiel, et al., 1976
Wight, G.R.; van der Wiel, M.J.; Brion, C.E., Dipole excitation, ionization and fragmentation of N₂ and CO in the 10-60 eV region, J. Phys. B:, 1976, 9, 675. [all data]

Asbrink, Fridh, et al., 1974
Asbrink, L.; Fridh, C.; Lindholm, E.; Codling, K., Photoelectron spectrum and Rydberg transitions of CO, Phys. Scr., 1974, 10, 183. [all data]

Codling and Potts, 1974
Codling, K.; Potts, A.W., Corrigendum: The absorption spectrum of carbon monoxide near 550 Å [Ref.: J. Phys. B:, 1974, Vol. 1, 163-169], J. Phys. B:, 1974, 7, 314. [all data]

Ogawa and Ogawa, 1974
Ogawa, S.; Ogawa, M., Absorption spectrum of CO in the Hopfield helium continuum region. Rydberg bands converging to the X²Σ⁺ state of CO⁺ in the region 960-1080 Å, J. Mol. Spectrosc., 1974, 49, 454. [all data]

Tanaka, 1942
Tanaka, Y., CO absorption spectra in the extreme ultra-violet, Sci. Pap. Inst. Phys. Chem. Res. Jpn., 1942, 39, 447. [all data]

Henning, 1932
Henning, H.J., Die absorptionsspektren von kohlendioxyd, kohlenmonoxyd und wasserdampf im gebiet von 600-900 ÅE, Ann. Phys. (Leipzig), 1932, 13, 599. [all data]

Lindholm, 1969
Lindholm, E., Rydberg series in small molecules. II. Rydberg series in CO, Ark. Fys., 1969, 40, 103. [all data]

Tilford and Simmons, 1974
Tilford, S.G.; Simmons, J.D., Reexamination of the vacuum ultraviolet emission spectrum of CO in the 950-1200 A region, J. Mol. Spectrosc., 1974, 53, 436. [all data]

Hopfield and Birge, 1927
Hopfield, J.J.; Birge, R.T., Ultra-violet absorption and emission spectra of carbon monoxide, Phys. Rev., 1927, 29, 922. [all data]

Tschulanovsky, 1939
Tschulanovsky, V.M., Two new electron levels of the molecule of CO, J. Phys. (USSR), 1939, 1, 341. [all data]

Kepa, Knot-Wisniewska, et al., 1975
Kepa, R.; Knot-Wisniewska, M.; Rytel, M., The E¹Π-A¹Π system of ¹²C¹⁶O molecule - the rotational analysis, Acta Phys. Pol. A, 1975, 48, 819. [all data]

Schmid and Gero, 1935
Schmid, R.; Gero, L., Uber die B¹Σ→A¹Π- und C¹Σ→A¹Π-banden des kohlenoxyds, Z. Phys., 1935, 93, 656. [all data]

Tilford and Vanderslice, 1968
Tilford, S.G.; Vanderslice, J.T., High resolution vacuum ultraviolet absorption spectra of the B¹Σ⁺-X¹Σ⁺, C¹Σ⁺-X¹Σ⁺, and j³Σ⁺-X¹Σ⁺ transitions in carbon monoxide, J. Mol. Spectrosc., 1968, 26, 419. [all data]

Aarts and de Heer, 1970
Aarts, J.F.M.; de Heer, F.J., Emission of radiation in the vacuum ultraviolet by impact of electrons on carbon monoxide, J. Chem. Phys., 1970, 52, 5354. [all data]

Kaplan, 1930
Kaplan, J., A new system of bands in carbon monoxide, Phys. Rev., 1930, 35, 1298. [all data]

Dieke and Mauchly, 1933
Dieke, G.H.; Mauchly, J.W., The structure of the third positive group of CO bands, Phys. Rev., 1933, 43, 12. [all data]

Gero, 1936
Gero, L., Rotationsanalyse der (1,0)b³Σ → a³Π CO-bande, Z. Phys., 1936, 101, 311. [all data]

Beer, 1937
Beer, B.S., Rotationsanalyse der 0→4-, 0→5-, 1→4- und 1→5- banden des III. pos. CO-systems, Z. Phys., 1937, 107, 73. [all data]

Schmid and Gero, 1937
Schmid, R.; Gero, L., Structure of a new system of CO bands, Nature (London), 1937, 140, 508. [all data]

Simmons and Tilford, 1971
Simmons, J.D.; Tilford, S.G., New absorption bands and isotopic studies of known transitions in CO, J. Res. Nat. Bur. Stand. Sect. A, 1971, 75, 455. [all data]

Tilford and Simmons, 1972
Tilford, S.G.; Simmons, J.D., Atlas of the observed absorption spectrum of carbon monoxide between 1060 and 1900 Å, J. Phys. Chem. Ref. Data, 1972, 1, 147. [all data]

Barrow, 1961
Barrow, R.F., Triplet bands of carbon monoxide: the system e³Σ - a³Π, Nature (London), 1961, 189, 480. [all data]

Gero and Szabo, 1939
Gero, L.; Szabo, F., Uber die struktur der triplettbanden (d³Π→a³Π) des kohlenoxyds, Ann. Phys. (Leipzig), 1939, 35, 597. [all data]

Carroll, 1962
Carroll, P.K., Structure of the triplet bands of CO, J. Chem. Phys., 1962, 36, 2861. [all data]

Slanger and Black, 1970
Slanger, T.G.; Black, G., The perturbation spectrum of CO, Chem. Phys. Lett., 1970, 4, 558. [all data]

Herzberg, Hugo, et al., 1970
Herzberg, G.; Hugo, T.J.; Tilford, S.G.; Simmons, J.D., Rotational analysis of the forbidden d³Δ_i ← X¹Σ⁺ absorption bands of carbon monoxide, Can. J. Phys., 1970, 48, 3004. [all data]

Asundi, 1929
Asundi, R.K., The third positive carbon and associated bands, Proc. R. Soc. London A, 1929, 124, 277. [all data]

Gero and Lorinezi, 1939
Gero, L.; Lorinezi, K., Rotationsanalyse der a'³Σ⁺ → a³Π-CO-Banden, Z. Phys., 1939, 113, 449. [all data]

Field, Tilford, et al., 1972
Field, R.W.; Tilford, S.G.; Howard, R.A.; Simmons, J.D., Fine structure and perturbation analysis of the a³Π state of CO, J. Mol. Spectrosc., 1972, 44, 347. [all data]

Bouanich, Levy, et al., 1967
Bouanich, J.-P.; Levy, A.; Haeusler, C., Spectre de vibration-rotation de l'oxyde de carbone CO. Etude de la bande v_0→3, C.R. Acad. Sci. Paris, Ser. B, 1967, 264, 944. [all data]

Bouanich, Levy, et al., 1968
Bouanich, J.-P.; Levy, A.; Haeusler, C., Constantes moleculaires de l'oxyde de carbone, J. Phys. (Paris), 1968, 29, 641. [all data]

Bouanich and Brodbeck, 1974
Bouanich, J.-P.; Brodbeck, C., Etalonnage et deplacement des raies de vibration-rotation des bandes 0 → 2 et 0 → 3 de l'oxyde de carbone, Rev. Phys. Appl., 1974, 9, 475. [all data]

Mantz and Maillard, 1974
Mantz, A.W.; Maillard, J.-P., Emission spectra with a high resolution Fourier transform spectrometer: CO spectra and their astrophysical importance, J. Mol. Spectrosc., 1974, 53, 466. [all data]

Rank, Skorinko, et al., 1960
Rank, D.H.; Skorinko, G.; Eastman, D.P.; Wiggins, T.A., Highly precise wavelengths in the infrared, J. Mol. Spectrosc., 1960, 4, 518. [all data]

Rao, Humphreys, et al., 1966
Rao, K.N.; Humphreys, C.J.; Rank, D.H., Wavelength standards in the infrared, Academic Press, New York, 1966, 0. [all data]

Loewenstein, 1960
Loewenstein, E.V., Interferometric spectra of ammonia and carbon monoxide in the far infrared, J. Opt. Soc. Am., 1960, 50, 1163. [all data]

Rosenblum, Nethercot, et al., 1958
Rosenblum, B.; Nethercot, A.H., Jr.; Townes, C.H., Isotopic mass ratios, magnetic moments and the sign of the electric dipole moment in carbon monoxide, Phys. Rev., 1958, 109, 400. [all data]

Helminger, De Lucia, et al., 1970
Helminger, P.; De Lucia, F.C.; Gordy, W., Extension of microwave absorption spectroscopy to 0.37-mm wavelength, Phys. Rev. Lett., 1970, 25, 1397. [all data]

Lovas and Krupenie, 1974
Lovas, F.J.; Krupenie, P.H., Microwave spectra of molecules of astrophysical interest. VII. Carbon monoxide, carbon monosulfide, and silicon monoxide, J. Phys. Chem. Ref. Data, 1974, 3, 245. [all data]

Muenter, 1975
Muenter, J.S., Electric dipole moment of carbon monoxide, J. Mol. Spectrosc., 1975, 55, 490. [all data]

Ozier, Yi, et al., 1967
Ozier, I.; Yi, P.; Khosla, A.; Ramsey, N.F., Sign and magnitude of the rotational moment of ¹²C¹⁶O, J. Chem. Phys., 1967, 46, 1530. [all data]

Ozier, Crapo, et al., 1968
Ozier, I.; Crapo, L.M.; Ramsey, N.F., Spin rotation constant and rotational magnetic moment of ¹³C¹⁶O, J. Chem. Phys., 1968, 49, 2314. [all data]

van der Wiel, El-Sherbini, et al., 1970
van der Wiel, M.J.; El-Sherbini, Th.M.; Brion, C.E., K shell excitation of nitrogen and carbon monoxide by electron impact, Chem. Phys. Lett., 1970, 7, 161. [all data]

Lee, Carlson, et al., 1975
Lee, L.C.; Carlson, R.W.; Judge, D.L.; Ogawa, M., Vacuum ultraviolet fluorescence from photodissociation fragments of CO and CO₂, J. Chem. Phys., 1975, 63, 3987. [all data]

Locht and Durer, 1975
Locht, R.; Durer, J.M., New predissociations of CO and CO⁺ induced by low energy electron impact, Chem. Phys. Lett., 1975, 34, 508. [all data]

Krupenie and Benesch, 1968
Krupenie, P.H.; Benesch, W., Electronic transition moment integrals for first ionization of CO and the A-X transition in Co⁺. Some limitations on the use of the r-centroid approximation, J. Res. Nat. Bur. Stand. Sect. A, 1968, 72, 495. [all data]

Nicholls, 1968
Nicholls, R.W., Franck-Condon factors for ionizing transitions of O₂, CO, NO and H₂ and for the NO⁺(A¹-Σx¹Σ) band system, J. Phys. B:, 1968, 1, 1192. [all data]

Turner and May, 1966
Turner, D.W.; May, D.P., Franck-Condon factors in ionization: experimental measurement using molecular photoelectron spectroscopy, J. Chem. Phys., 1966, 45, 471. [all data]

Comes and Speier, 1971
Comes, F.J.; Speier, F., Luminescence of diatomic molecular ions. I. Franck-Condon-factors and collisional deactivation, Z. Naturforsch. A, 1971, 26, 1998. [all data]

Gardner and Samson, 1974
Gardner, J.L.; Samson, J.A.R., Experimental vibrational intensity distributions for continuum photoionization to the X²Σ⁺, A²Π, and B²Σ⁺ states of CO⁺ and N₂⁺, J. Chem. Phys., 1974, 60, 3711. [all data]

Judge and Lee, 1972
Judge, D.L.; Lee, L.C., Electronic transition moments for the A → X, B → X, and B → A transitions in CO⁺ and the A ← B and B ← X moments for the CO → CO⁺ systems; absolute cross sections for the absorption processes, J. Chem. Phys., 1972, 57, 455. [all data]

Samson and Gardner, 1976
Samson, J.A.R.; Gardner, J.L., Partial photoionization cross-sections and branching ratios of CO from 750 to 304 Å, J. Electron Spectrosc. Relat. Phenom., 1976, 8, 35. [all data]

Ogawa and Ogawa, 1972
Ogawa, M.; Ogawa, S., Absorption spectrum of CO in the Hopfield helium continuum region, 600-1020 A, J. Mol. Spectrosc., 1972, 41, 393. [all data]

Carbonneau and Marmet, 1973
Carbonneau, R.; Marmet, P., Negative and neutral autoionizing states detected in the electroionization curve in CO, Can. J. Phys., 1973, 51, 2202. [all data]

Cook, Metzger, et al., 1965
Cook, G.R.; Metzger, P.H.; Ogawa, M., Photoionization and absorption coefficients of CO in the 600 to 1000 A region, Can. J. Phys., 1965, 43, 1706. [all data]

Takamine, Tanaka, et al., 1943
Takamine, T.; Tanaka, Y.; Iwata, M., On the first ionization potential of CO, Sci. Papers Inst. Phys. Chem. Res. Jpn., 1943, 40, 371. [all data]

Jevons, 1932
Jevons, W., Report on band-spectra of diatomic molecules, Pub. The Physical Society, The University Press, London, 1932, 0. [all data]

Simmons and Tilford, 1974
Simmons, J.D.; Tilford, S.G., Evidence for an accidental predissociation of CO, J. Mol. Spectrosc., 1974, 49, 167. [all data]

Lassettre and Skerbele, 1971
Lassettre, E.N.; Skerbele, A., Absolute generalized oscillator strengths for four electronic transitions in carbon monoxide, J. Chem. Phys., 1971, 54, 1597. [all data]

Fisher and Dalby, 1976
Fisher, N.J.; Dalby, F.W., On the dipole moments of excited singlet states of carbon monoxide, Can. J. Phys., 1976, 54, 258. [all data]

Hesser, 1968
Hesser, J.E., Absolute Transition Probabilities in Ultraviolet Molecular Spectra, J. Chem. Phys., 1968, 48, 6, 2518, https://doi.org/10.1063/1.1669477 . [all data]

Dotchin and Chupp, 1973
Dotchin, L.W.; Chupp, E.L., Radiative lifetimes and pressure dependence of the relaxation rates of some vibronic levels in N₂⁺, N₂, CO⁺, and CO, J. Chem. Phys., 1973, 59, 3960. [all data]

Kepa, 1969
Kepa, R., Note on the Herzberg system of the isotopic CO molecules, Acta Phys. Pol., 1969, 36, 1109. [all data]

Asundi, Dhumwad, et al., 1970
Asundi, R.K.; Dhumwad, R.K.; Patwardhan, A.B., Isotope shift studies of Herzberg bands of CO and comet-tail and Baldet-Johnson bands of CO⁺, J. Mol. Spectrosc., 1970, 34, 528. [all data]

Swanson, Celotta, et al., 1975
Swanson, N.; Celotta, R.J.; Kuyatt, C.E.; Cooper, J.W., Resonant structure in electron impact excitation of CO near threshold, J. Chem. Phys., 1975, 62, 4880. [all data]

Douglas and Moller, 1955
Douglas, A.E.; Moller, C.K., Predissociations of the C¹²O and C¹³O molecules, Can. J. Phys., 1955, 33, 125. [all data]

Imhof, Read, et al., 1972
Imhof, R.E.; Read, F.H.; Beckett, S.T., Determination of the transition moment of the B¹Σ⁺-x¹Σ⁺ transition in CO, J. Phys. B:, 1972, 5, 896. [all data]

Rogers and Anderson, 1970
Rogers, J.; Anderson, R., Radiative lifetime of the B¹Σ⁺ state of CO, J. Opt. Soc. Am., 1970, 60, 278. [all data]

Kepa and Rytel, 1970
Kepa, R.; Rytel, M., On the angstrom bands of ¹²C¹⁶O, Acta Phys. Pol., 1970, 37, 585. [all data]

Janjic, Pesic, et al., 1969
Janjic, F.D.; Pesic, D.S.; Jankovic, D.S., The angstrom band system of the ¹²C¹⁸O molecule, Bull. Soc. Chim. Beograd., 1969, 34, 301. [all data]

Gero, 1935
Gero, L., Storung und pradissoziation im b³Σ-term des CO-bandenspektrums, Z. Phys., 1935, 95, 747. [all data]

Schmid and Gero, 1935, 2
Schmid, R.; Gero, L., Zur struktur der 5 B-banden des CO-spektrums, Z. Phys., 1935, 96, 198. [all data]

Stepanov, 1940
Stepanov, B.I., On the calculation of constants of the level b³Σ in molecule CO, J. Phys. (USSR), 1940, 2, 197. [all data]

Barrow, Gratzer, et al., 1956
Barrow, R.F.; Gratzer, W.B.; Malherbe, J.F., Intensities of bands in the system b³Σ⁺-a³Π of carbon monoxide, Proc. Phys. Soc. London Sect. A, 1956, 69, 574. [all data]

Rogers and Anderson, 1970, 2
Rogers, J.; Anderson, R., Radiative lifetime of the b³Σ⁺ state of CO, J. Quant. Spectrosc. Radiat. Transfer, 1970, 10, 515. [all data]

Smith, Imhof, et al., 1973
Smith, A.J.; Imhof, R.E.; Read, F.H., Measured lifetimes of the two vibrational levels of the b³Σ⁺ state of CO, J. Phys. B:, 1973, 6, 1333. [all data]

Gero, 1938
Gero, L., Rotationsanalyse von a'³Σ⁺ → a³Π-banden des CO, Z. Phys., 1938, 109, 216. [all data]

Field, 1971
Field, R.W., Thesis, Harvard University, Massachusetts, 1971, 0. [all data]

Simmons, Bass, et al., 1969
Simmons, J.D.; Bass, A.M.; Tilford, S.G., The fourth positive system of carbon monoxide observed in absorption at high resolution in the vacuum ultraviolet region, Astrophys. J., 1969, 155, 345. [all data]

Field, Wicke, et al., 1972
Field, R.W.; Wicke, B.G.; Simmons, J.D.; Tilford, S.G., Analysis of perturbations in the a³Π and A¹Π states of CO, J. Mol. Spectrosc., 1972, 44, 383. [all data]

Imhof and Read, 1971
Imhof, R.E.; Read, F.H., Measured lifetimes of the first seven vibrational levels of the A¹Π state of CO, Chem. Phys. Lett., 1971, 11, 326. [all data]

Burnham, Isler, et al., 1972
Burnham, R.L.; Isler, R.C.; Wells, W.C., Zero-field level-crossing spectroscopy of the A¹Π state of carbon monoxide, Phys. Rev. A: Gen. Phys., 1972, 6, 1327. [all data]

Chervenak and Anderson, 1971
Chervenak, J.G.; Anderson, R.A., Radiative lifetime of the A¹Π state of CO, J. Opt. Soc. Am., 1971, 61, 952. [all data]

Mumma, Stone, et al., 1971
Mumma, M.J.; Stone, E.J.; Zipf, E.C., Excitation of the CO fourth positive band system by electron impact on carbon monoxide and carbon dioxide, J. Chem. Phys., 1971, 54, 2627. [all data]

Pilling, Bass, et al., 1971
Pilling, M.J.; Bass, A.M.; Braun, W., A curve of growth determination of the f-values for the fourth positive system of CO and the Lyman-Birge-Hopfield system of N₂, J. Quant. Spectrosc. Radiat. Transfer, 1971, 11, 1593. [all data]

Vargin, Pasynkova, et al., 1973
Vargin, A.N.; Pasynkova, L.M.; Trekhov, E.S., Measurement of |R_e|² for the 4⁺ system of CO, J. Appl. Spectrosc. Engl. Transl., 1973, 13, 1340, In original 662. [all data]

Halmann and Laulicht, 1966
Halmann, M.; Laulicht, I., Isotope effects on vibrational transition probabilities. IV. Electronic transitions of isotopic C₂, CO, CN, H₂, and CH molecules, Astrophys. J. Suppl. Ser., 1966, 12, 307. [all data]

Shimauchi, 1976
Shimauchi, M., Franck-Condon factors and r-centroids for the A¹Π-X¹Σ systems of CO and NO⁺, Sci. Light (Tokyo), 1976, 25, 1. [all data]

Shvangiradze, Oganezov, et al., 1960
Shvangiradze, R.R.; Oganezov, K.A.; Chikhladze, B.Ya., Isotopic band shifts in the electronic-vibrational spectra of some diatomic molecules, Opt. Spectrosc. Engl. Transl., 1960, 8, 239. [all data]

Rytel and Siwiec, 1973
Rytel, M.; Siwiec, T., Perturbations in the spectra of CO isotopic molecules. I. Partial analysis of e³Σ^- - A¹Π perturbations, Acta Phys. Pol., 1973, 44, 67. [all data]

Field and Lefebvre-Brion, 1974
Field, R.W.; Lefebvre-Brion, H., On the effective spin-spin constants of some states of diatomic molecules. Application to the CO molecule, Acta Phys. Acad. Sci. Hung., 1974, 35, 51. [all data]

Slanger and Black, 1976
Slanger, T.G.; Black, G., Relative electronic transition moments for the e³Σ^--a³Π Herman system of CO, J. Chem. Phys., 1976, 64, 219. [all data]

Slanger and Black, 1972
Slanger, T.G.; Black, G., Relative electronic transition moments for the triplet system (d³Δ → a³Π) of CO, J. Phys. B:, 1972, 5, 1988. [all data]

Kovacs and Toros, 1965
Kovacs, I.; Toros, R., The intensity distribution of the triplet bands of the CO molecule, Acta Phys. Hung., 1965, 18, 101. [all data]

Slanger and Black, 1973
Slanger, T.G.; Black, G., Relaxation processes in excited CO states. I. Spin multiplet relaxation and radiative lifetimes of CO(d³Δ)_v=5, J. Chem. Phys., 1973, 58, 194. [all data]

Sink, Lefebvre-Brion, et al., 1975
Sink, M.L.; Lefebvre-Brion, H.; Hall, J.A., Ab initio calculations of the effective spin-spin constants of the ³Σ excited states of the N₂ and CO molecules, J. Chem. Phys., 1975, 62, 1802. [all data]

Wicke, Field, et al., 1972
Wicke, B.G.; Field, R.W.; Klemperer, W., Fine structure, dipole moment, and perturbation analysis of a³Π CO, J. Chem. Phys., 1972, 56, 5758. [all data]

Wicke, Klemperer, et al., 1975
Wicke, B.G.; Klemperer, W.; Field, R., Lambda doublings and electric dipole moments of v = 6 and 7 a³Π carbon monoxide, J. Chem. Phys., 1975, 62, 3544. [all data]

Hartfuss and Schmillen, 1968
Hartfuss, H.J.; Schmillen, A., Uber das Abklingen der ersten positiven Gruppe des N₂ und der Asundi-Banden des CO, Z. Naturforsch. A, 1968, 23, 722. [all data]

Stern, Gammon, et al., 1970
Stern, R.C.; Gammon, R.H.; Lesk, M.E.; Freund, R.S.; Klemperer, W.A., Fine structure and dipole moment of metastable a³Π carbon monoxide, J. Chem. Phys., 1970, 52, 3467. [all data]

Gammon, Stern, et al., 1971
Gammon, R.H.; Stern, R.C.; Klemperer, W., Molecular-beam electric-resonance spectroscopy of the a³Π (v = 4)-a'³Σ⁺ (v' = O) perturbation in CO, J. Chem. Phys., 1971, 54, 2151. [all data]

Freund and Klemperer, 1965
Freund, R.S.; Klemperer, W., Radio-frequency spectrum of the a³Π state of carbon monoxide, J. Chem. Phys., 1965, 43, 2422. [all data]

Gammon, Stern, et al., 1971, 2
Gammon, R.H.; Stern, R.C.; Lesk, M.E.; Wicke, B.G.; Klemperer, W., Metastable a ³Π ¹³CO: molecular-beam electric-resonance measurements of the fine structure, hyperfine structure, and dipole moment, J. Chem. Phys., 1971, 54, 2136. [all data]

Wicke and Klemperer, 1975
Wicke, B.G.; Klemperer, W., On the experimentally determined dipole moment function of CO a³Π, Mol. Phys., 1975, 30, 1021. [all data]

Wicke and Klemperer, 1975, 2
Wicke, B.G.; Klemperer, W., Experimental dipole moment function and calculated radiative lifetimes for vibrational transitions in carbon monoxide a³Π, J. Chem. Phys., 1975, 63, 3756. [all data]

Johnson, 1972
Johnson, C.E., Lifetime of CO(a³Π) following electron impact dissociation of CO₂, J. Chem. Phys., 1972, 57, 576. [all data]

Lawrence, 1971
Lawrence, G.M., Quenching and radiation rates of CO (a³Π), Chem. Phys. Lett., 1971, 9, 575. [all data]

Wauchop and Broida, 1972
Wauchop, T.S.; Broida, H.P., Lifetime and quenching of CO(a³Π) produced by recombination of CO₂ ions in a helium afterglow, J. Chem. Phys., 1972, 56, 330. [all data]

James, 1971
James, T.C., Transition moments, Franck-Condon factors, and lifetimes of forbidden transitions. Calculation of the intensity of the Cameron system of CO, J. Chem. Phys., 1971, 55, 4118. [all data]

Mantz and Maillard, 1975
Mantz, A.W.; Maillard, J.P., Ground state molecular constants of ¹²C¹⁶O, J. Mol. Spectrosc., 1975, 57, 155. [all data]

Mantz, Watson, et al., 1971
Mantz, A.W.; Watson, J.K.G.; Rao, K.N.; Albritton, D.L.; Schmeltekopf, A.L.; Zare, R.N., Rydberg-Klein-Rees potential for the X¹Σ⁺ state of the CO molecule, J. Mol. Spectrosc., 1971, 39, 180. [all data]

Dickinson, 1972
Dickinson, A.S., A new method for evaluating Rydberg-Klein-Rees intergrals, J. Mol. Spectrosc., 1972, 44, 183. [all data]

Fleming and Rao, 1972
Fleming, H.E.; Rao, K.N., A simple numerical evaluation of the Rydberg-Klein-Rees integrals: application to X¹Σ⁺ state of ¹²C¹⁶O, J. Mol. Spectrosc., 1972, 44, 189. [all data]

Bunker, 1970
Bunker, P.R., The effect of the breakdown of the Born-Oppenheimer approximation on the determination of B_e and ω_e for a diatomic molecule, J. Mol. Spectrosc., 1970, 35, 306-313. [all data]

Bunker, 1972
Bunker, P.R., On the breakdown of the Born-Oppenheimer approximation for a diatomic molecule, J. Mol. Spectrosc., 1972, 5, 478. [all data]

Watson, 1973
Watson, J.K.G., The isotope dependence of the equilibrium rotational constants in ¹Σ states of diatomic molecules, J. Mol. Spectrosc., 1973, 45, 99. [all data]

Schwartz and Thrush, 1969
Schwartz, S.E.; Thrush, B.A., Energies of vibrational levels 22 to 33 of carbon monoxide X¹Σ_g⁺, J. Mol. Spectrosc., 1969, 32, 343. [all data]

Mantz, Nichols, et al., 1970
Mantz, A.W.; Nichols, E.R.; Alpert, B.D.; Rao, K.N., CO laser spectra studied with a 10-meter vacuum infrared grating spectrograph, J. Mol. Spectrosc., 1970, 35, 325. [all data]

Yardley, 1970
Yardley, J.T., Laser action in highly-excited vibrational levels of CO, J. Mol. Spectrosc., 1970, 35, 314. [all data]

Kildal, Eng, et al., 1974
Kildal, H.; Eng, R.S.; Ross, A.H.M., Heterodyne measurements of ¹²C¹⁶O laser frequencies and improved Dunham coefficients, J. Mol. Spectrosc., 1974, 53, 479. [all data]

Millikan, 1963
Millikan, R.C., Vibrational fluorescence of carbon monoxide, J. Chem. Phys., 1963, 38, 2855. [all data]

McCaa and Williams, 1964
McCaa, D.J.; Williams, D., Infrared fluorescence of carbon monoxide, J. Opt. Soc. Am., 1964, 54, 326. [all data]

Dowling, 1969
Dowling, J.M., Line widths in the pure rotational spectrum of carbon monoxide, J. Quant. Spectrosc. Radiat. Transfer, 1969, 9, 1613. [all data]

Sanderson, Scott, et al., 1971
Sanderson, R.B.; Scott, H.E.; White, J.T., Strengths and widths of the pure rotational lines of CO, J. Mol. Spectrosc., 1971, 38, 252. [all data]

Buontempo, Cunsolo, et al., 1973
Buontempo, U.; Cunsolo, S.; Jacucci, G., Electric quadrupole moment of CO and molecular torque in liquid Ar and N₂ from ir spectra, J. Chem. Phys., 1973, 59, 3750. [all data]

Billingsley and Krauss, 1974
Billingsley, F.P., II; Krauss, M., Quadrupole moment of CO, N₂, and NO⁺, J. Chem. Phys., 1974, 60, 2767. [all data]

Toth, Hunt, et al., 1969
Toth, R.A.; Hunt, R.H.; Plyler, E.K., Line intensities in the 3-0 of the CO and dipole moment matrix elements for the CO molecule, J. Mol. Spectrosc., 1969, 32, 85. [all data]

Siegbahn, Nordling, et al., 1969
Siegbahn, K.; Nordling, C.; Johansson, G.; Hedman, J.; Heden, P.F.; Hamrin, k.; Gelius, U.; Bergmark, T.; Werme, L.O.; Manne, R.; Baer, ESCA Applied to Free Molecules, North-Holland Publishing Company, Amsterdam, 1969, 0. [all data]

Thomas, 1970
Thomas, T.D., X-ray photoelectron spectroscopy of carbon monoxide, J. Chem. Phys., 1970, 53, 1744. [all data]

Smith and Thomas, 1976
Smith, S.R.; Thomas, T.D., Core ionization potentials in carbon monoxide, J. Electron Spectrosc. Relat. Phenom., 1976, 8, 45. [all data]

Wells, Borst, et al., 1973
Wells, W.C.; Borst, W.L.; Zipf, E.C., Excitation of higher-lying metastable states in carbon monoxide by electron impact: cross-section and lifetime measurements, Phys. Rev. A: Gen. Phys., 1973, 8, 2463. [all data]

Johns, McKellar, et al., 1974
Johns, J.W.C.; McKellar, A.R.W.; Weitz, D., Wavelength measurements of ¹³C¹⁶O laser transitions, J. Mol. Spectrosc., 1974, 51, 539. [all data]

Chen, Rao, et al., 1976
Chen, D.-W.; Rao, K.N.; McDowell, R.S., Fundamental and overtone bands of isotopic species of carbon monoxide, J. Mol. Spectrosc., 1976, 61, 71. [all data]

Young and Eachus, 1966
Young, L.A.; Eachus, W.J., Dipole moment function and vibration-rotation matrix elements for CO, J. Chem. Phys., 1966, 44, 4195. [all data]

Moskalenko and Mirumyants, 1971
Moskalenko, N.I.; Mirumyants, S.O., Measurement of the integral intensities of infrared absorption bands of H₂O, CO₂, N₂O, CO, CH₄, and NO vapor in the temperature range 220-400°K, Sov. Phys. J. Engl. Transl., 1971, 6, 721, In original 7. [all data]

Roux, Effantin, et al., 1972
Roux, F.; Effantin, C.; D'Incan, J., Forces d'oscillateur absolues de rotation dans les transitions 2-0, 3-1, 4-2, 5-3, du spectre de vibration-rotation de la molecule CO, deduites de mesures d'intensites en emission, J. Quant. Spectrosc. Radiat. Transfer, 1972, 12, 97-106. [all data]

Billingsley and Krauss, 1974, 2
Billingsley, F.P., II; Krauss, M., Multiconfiguration self-consistent-field calculation of the dipole moment function of CO(X¹Σ⁺), J. Chem. Phys., 1974, 60, 4130. [all data]

Bouanich and Brodbeck, 1974, 2
Bouanich, J.-P.; Brodbeck, C., Moments de transition vibrationnelle des molecules diatomiques. Intensite des raies rovibrationnelles des bandes 0 → 2 et 0 → 3 et fonction dipolaire de CO, J. Quant. Spectrosc. Radiat. Transfer, 1974, 14, 1199. [all data]

Varanasi and Sarangi, 1975
Varanasi, P.; Sarangi, S., Measurements of intensities and nitrogen-broadened linewidths in the CO fundamental at low temperatures, J. Quant. Spectrosc. Radiat. Transfer, 1975, 15, 473. [all data]

Tipping, 1976
Tipping, R.H., Vibration-rotation intensities for "hot" bands, J. Mol. Spectrosc., 1976, 61, 272-281. [all data]

Weisbach and Chackerian, 1973
Weisbach, M.F.; Chackerian, C., Jr., Linewidths and transition probabilities for the carbon monoxide laser lines, J. Chem. Phys., 1973, 59, 4272. [all data]

Hunt, Toth, et al., 1968
Hunt, R.H.; Toth, R.A.; Plyler, E.K., High-resolution determination of the widths of self-broadened lines of carbon monoxide, J. Chem. Phys., 1968, 49, 3909. [all data]

Hoover and Williams, 1969
Hoover, G.M.; Williams, D., Infrared absorptance of carbon monoxide at low temperatures, J. Opt. Soc. Am., 1969, 59, 28. [all data]

Bouanich, Larvor, et al., 1969
Bouanich, P.; Larvor, M.; Haeusler, C., Etude des raies de vibration-rotation de la bande v_0→3 de l'oxyde de carbone CO comprime, C.R. Acad. Sci. Paris, Ser. B, 1969, 269, 1238. [all data]

Varanasi, 1975
Varanasi, P., Measurement of line widths of CO of planetary interest at low temperatures, J. Quant. Spectrosc. Radiat. Transfer, 1975, 15, 191. [all data]

Moskalenko, 1975
Moskalenko, N.I., Measurement of intensities and halfwidths of spectral absorption lines of the fundamental 0-1 band of CO, Opt. Spectrosc. Engl. Transl., 1975, 38, 382, In original 676. [all data]

Notes

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