Carbon monosulfide

Formula: CS
Molecular weight: 44.076
IUPAC Standard InChI: InChI=1S/CS/c1-2
IUPAC Standard InChIKey: DXHPZXWIPWDXHJ-UHFFFAOYSA-N
CAS Registry Number: 2944-05-0
Chemical structure:
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Gas phase ion energetics data

Data evaluated as indicated in comments:
HL - Edward P. Hunter and Sharon G. Lias
L - Sharon G. Lias

Data compiled as indicated in comments:
LLK - Sharon G. Lias, Rhoda D. Levin, and Sherif A. Kafafi
RDSH - Henry M. Rosenstock, Keith Draxl, Bruce W. Steiner, and John T. Herron
B - John E. Bartmess

View reactions leading to CS⁺ (ion structure unspecified)

Quantity	Value	Units	Method	Reference	Comment
IE (evaluated)	11.33 ± 0.01	eV	N/A	N/A	L
Quantity	Value	Units	Method	Reference	Comment
Proton affinity (review)	791.5	kJ/mol	N/A	Hunter and Lias, 1998	HL
Quantity	Value	Units	Method	Reference	Comment
Gas basicity	760.	kJ/mol	N/A	Hunter and Lias, 1998	HL
Quantity	Value	Units	Method	Reference	Comment
Δ_fH°_{(+) ion}	1370.	kJ/mol	N/A	N/A
Quantity	Value	Units	Method	Reference	Comment
Δ_fH_{(+) ion,0K}	1360.	kJ/mol	N/A	N/A

Electron affinity determinations

EA (eV)	Method	Reference	Comment
0.205 ± 0.021	LPES	Burnett, Feigerle, et al., 1982	B
>1.60 ± 0.30	EIAE	Thynne, 1972	From COS; B

Ionization energy determinations

IE (eV)	Method	Reference	Comment
11.335	EVAL	Huber and Herzberg, 1979	LLK
11.0 ± 0.03	EI	Tal'roze, Butkovskaya, et al., 1978	LLK
11.33 ± 0.01	PI	Drowart, Smets, et al., 1978	LLK
11.4 ± 0.1	EI	Hildenbrand, 1975	LLK
11.33 ± 0.02	PE	King, Kroto, et al., 1972	LLK
11.33 ± 0.01	PE	Jonathan, Morris, et al., 1972	LLK
11.33 ± 0.02	PE	Jonathan, Morris, et al., 1972, 2	LLK
11.39 ± 0.10	EI	Hildenbrand, 1972	LLK
11.34 ± 0.02	PE	Frost, Lee, et al., 1972	LLK
~11.65	S	Donovan, Husain, et al., 1970	RDSH
11.71 ± 0.03	DER	Dibeler and Walker, 1967	RDSH
11.8 ± 0.2	EI	Blanchard and LeGoff, 1957	RDSH

References

Go To: Top, Gas phase ion energetics data, Notes

Hunter and Lias, 1998
Hunter, E.P.; Lias, S.G., Evaluated Gas Phase Basicities and Proton Affinities of Molecules: An Update, J. Phys. Chem. Ref. Data, 1998, 27, 3, 413-656, https://doi.org/10.1063/1.556018 . [all data]

Burnett, Feigerle, et al., 1982
Burnett, S.M.; Feigerle, C.S.; Stevens, A.E.; Lineberger, C.W., Photoelectron spectroscopy of CS- and NS-, J. Phys. Chem., 1982, 86, 4486. [all data]

Thynne, 1972
Thynne, J.C.J., Negative Ion Studies with a Time-of-Flight Mass Spectrometer., Dyn. Mass Spectrom., 1972, 3, 67. [all data]

Huber and Herzberg, 1979
Huber, K.P.; Herzberg, G., Molecular Spectra and Molecular Structure. IV. Constants of Diatomic Molecules,, Van Nostrand Reinhold Co., 1979, ,1. [all data]

Tal'roze, Butkovskaya, et al., 1978
Tal'roze, V.L.; Butkovskaya, N.I.; Larichev, M.N.; Leipunskii, I.O.; Morozov, I.I.; Dodonov, A.F.; Kudrov, B.V.; Zelenov, V.V.; Raznikov, V.V., Advances in the mass spectrometry of free radicals, Adv. Mass Spectrom., 1978, 7, 693. [all data]

Drowart, Smets, et al., 1978
Drowart, J.; Smets, J.; Reynaert, J.C.; Coppens, P., Mass spectrometric study of the photoionization of inorganic gases vapours, Adv. Mass Spectrom., 1978, 7, 647. [all data]

Hildenbrand, 1975
Hildenbrand, D.L., Vertical ionization potential of the CF₂ radical, Chem. Phys. Lett., 1975, 32, 30. [all data]

King, Kroto, et al., 1972
King, G.H.; Kroto, H.W.; Suffolk, R.J., The photoelectron spectrum of a short-lived species in the decomposition products of CS₂, Chem. Phys. Lett., 1972, 13, 457. [all data]

Jonathan, Morris, et al., 1972
Jonathan, N.; Morris, A.; Okuda, M.; Ross, K.J.; Smith, D.J., Photoelectron spectroscopy of transient species. The CS molecule, Faraday Discuss. Chem. Soc., 1972, 54, 48. [all data]

Jonathan, Morris, et al., 1972, 2
Jonathan, N.; Morris, A.; Okuda, M.; Smith, D.J.; Ross, K.J., Photoelectron spectroscopy of transient species: The CS molecule, Chem. Phys. Lett., 1972, 13, 334. [all data]

Hildenbrand, 1972
Hildenbrand, D.L., Thermochemistry of the molecules CS and CS⁺, Chem. Phys. Lett., 1972, 15, 379. [all data]

Frost, Lee, et al., 1972
Frost, D.C.; Lee, S.T.; McDowell, C.A., The high resolution photoelectron spectrum of CS, Chem. Phys. Lett., 1972, 17, 153. [all data]

Donovan, Husain, et al., 1970
Donovan, R.J.; Husain, D.; Stevenson, C.D., Vacuum ultra-violet spectra of transient molecules and radicals. Part 1. CS and S₂, J. Chem. Soc. Faraday Trans., 1970, 66, 1. [all data]

Dibeler and Walker, 1967
Dibeler, V.H.; Walker, J.A., Mass spectrometric study of the photoionization of small polyatomic molecules, Advan. Mass Spectrom., 1967, 4, 767. [all data]

Blanchard and LeGoff, 1957
Blanchard, L.P.; LeGoff, P., Mass spectrometric study of the species CS, SO, and CCl₂ produced in primary heterogeneous reactions, Can. J. Chem., 1957, 35, 89. [all data]

Notes

Go To: Top, Gas phase ion energetics data, References

Symbols used in this document:

EA Electron affinity

IE (evaluated) Recommended ionization energy

Δ_fH_{(+) ion,0K} Enthalpy of formation of positive ion at 0K
Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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EA	Electron affinity
IE (evaluated)	Recommended ionization energy
Δ_fH_{(+) ion,0K}	Enthalpy of formation of positive ion at 0K