12144-04-6

Basic information

• Product Name: carbon monoxide⁽¹⁺⁾
• Synonyms: carbon monoxide⁽¹⁺⁾
• CAS NO: 12144-04-6
• Molecular Weight: 28.0104
• Mol File: 12144-04-6.mol
• Article Data: 3

Chemical Properties

• CAS DataBase Reference: carbon monoxide⁽¹⁺⁾(CAS DataBase Reference)
• NIST Chemistry Reference: carbon monoxide⁽¹⁺⁾(12144-04-6)
• EPA Substance Registry System: carbon monoxide⁽¹⁺⁾(12144-04-6)

Safety Data

• Hazardous Substances Data: 12144-04-6(Hazardous Substances Data)

Upstream product

• 201230-82-2 carbon monoxide 
• 16873-17-9 deuterium 
• 1333-74-0 hydrogen 
• 504-64-3 carbon suboxide 
• 124-38-9 carbon dioxide 
• 12184-99-5 (helium)2⁽¹⁺⁾ 
• 463-58-1 carbon oxide sulfide 

Downstream Products

• 24203-25-6 xenon ⁽¹⁺⁾ 
• 201230-82-2 carbon monoxide 
• 14067-05-1 carbon(I) ion 

Relevant articles and documents

Negative-ion mass spectrometric study of ion-pair formation in the vacuum ultraviolet. II. OCS -> S- + CO+, O- + CS+, and CO2 -> O- + CO+

Ion-pair formation from photoexcitation of OCS and CO2 has been studied by negative-ion mass spectrometry using synchrotron radiation in the 15-35 eV photon energy range.Negative ions S- and O- from OCS and O- from CO2 have been observed.The lowest onset energy in the photodissociation efficiency curve for each ion is in good agreement with the thermochemical threshold for the formation of the negative ion in the ground 2Pu state and its counterpart positive ion in the ground 2Σ+ state.There exist series of peaks with medium intensities in the efficiency curves of S- from OCS and O- from CO2; they are identified as resulting from predissociation of the Rydberg states converging to OCS+ (2Σ+) and CO2+ (2Σg+), respectively.Broad peaks are observed at 18.4 eV (ca. 675 Angstroem) in the efficiency curves for both S- and O- produced from OCS.Predissociation of the excited valence state formed by the intravalence 9? -> 10? transition is considered to mainly contribute to these features.In addition, a broadband feature is present in the wavelength range of 400-620 Angstroem in the O- efficiency curve.The most likely candidate for the corresponding doorway state is the two-electron excited state involving simultaneous 9? -> 10? and 3? -> 4? transitions.In the case of the O- efficiency curve from CO2, two maxima observed at 21.4 (580 Angstroem) and 23.0 eV (538 Angstroem) are explained as resulting from the 3?u -> 5?g transition forming an excited valence state which effectively couples to the ion-pair continuum.

Reactions of Carbonyl Sulfide in a Radio-Frequency Plasma

Carbonyl sulfide was flowed through the plasma zone of a 13.6-MHz inductively coupled discharge.The active plasma was sampled by mass and emission spectroscopy.Typical conditions were as follows: power, 5-25 W; pressure, 0.1-0.3 torr; flow rate, 4 cm3 min-1.Mass spectrometry showed the neutrals CO, S, and S2 as products.The major ions were COS+, S+, S2+, S3+, CO+, and CS2+.The variations in the ionic composition as pressure and power were changed were studied.Reaction products coat the reactor walls after some time and it was shown that this deposit could be sputtered with a CO or Ar plasma to produce sulfur-containing ions.Experiments using a small amount of 2-butyne as coreactant with COS suggested that this hydrocarbon reacted with sulfur atoms.Comparison with the chemistry of butane plus COS was made.Emission spectroscopy showed major bands due to CO* and CS*.S* emission had a lower intensity.It was shown that 5 mol percent of SF6 quenched much of the CS* emission.It is suggested that CS* is formed from electron-COS+ recombination.