2-Propanethiol, 2-methyl-

Data at NIST subscription sites:

NIST subscription sites provide data under the NIST Standard Reference Data Program, but require an annual fee to access. The purpose of the fee is to recover costs associated with the development of data collections included in such sites. Your institution may already be a subscriber. Follow the links above to find out more about the data in these sites and their terms of usage.


Gas phase ion energetics data

Go To: Top, Mass spectrum (electron ionization), Gas Chromatography, References, Notes

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

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

Data compiled as indicated in comments:
B - John E. Bartmess
LLK - Sharon G. Lias, Rhoda D. Levin, and Sherif A. Kafafi

Quantity Value Units Method Reference Comment
Proton affinity (review)816.4kJ/molN/AHunter and Lias, 1998HL
Quantity Value Units Method Reference Comment
Gas basicity785.1kJ/molN/AHunter and Lias, 1998HL

Ionization energy determinations

IE (eV) Method Reference Comment
9.03PEOgata, Onizuka, et al., 1973LLK

Appearance energy determinations

Ion AE (eV) Other Products MethodReferenceComment
C3H7S+11.4 ± 0.15CH3EIBroer and Weringa, 1980LLK

De-protonation reactions

C4H9S- + Hydrogen cation = 2-Propanethiol, 2-methyl-

By formula: C4H9S- + H+ = C4H10S

Quantity Value Units Method Reference Comment
Δr1475. ± 9.2kJ/molG+TSBartmess, Scott, et al., 1979gas phase; value altered from reference due to change in acidity scale; B
Quantity Value Units Method Reference Comment
Δr1449. ± 8.4kJ/molIMREBartmess, Scott, et al., 1979gas phase; value altered from reference due to change in acidity scale; B

Mass spectrum (electron ionization)

Go To: Top, Gas phase ion energetics data, Gas Chromatography, 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: NIST Mass Spectrometry Data Center, William E. Wallace, director

Spectrum

Notice: This spectrum may be better viewed with a Javascript and HTML 5 enabled browser.

Mass spectrum
For Zoom
1.) Enter the desired X axis range (e.g., 100, 200)
2.) Check here for automatic Y scaling
3.) Press here to zoom

Additional Data

View image of digitized spectrum (can be printed in landscape orientation).

Due to licensing restrictions, this spectrum cannot be downloaded.

Owner NIST Mass Spectrometry Data Center
Collection (C) 2014 copyright by the U.S. Secretary of Commerce
on behalf of the United States of America. All rights reserved.
Origin Japan AIST/NIMC Database- Spectrum MS-NW-3796
NIST MS number 231054

All mass spectra in this site (plus many more) are available from the NIST/EPA/NIH Mass Spectral Library. Please see the following for information about the library and its accompanying search program.


Gas Chromatography

Go To: Top, Gas phase ion energetics data, Mass spectrum (electron ionization), 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: NIST Mass Spectrometry Data Center, William E. Wallace, director

Kovats' RI, non-polar column, isothermal

View large format table.

Column type Active phase Temperature (C) I Reference Comment
CapillaryDB-5100.605.5Miller and Bruno, 200330. m/0.25 mm/0.1 μm
CapillaryDB-5120.617.0Miller and Bruno, 200330. m/0.25 mm/0.1 μm
CapillaryDB-560.599.2Miller and Bruno, 200330. m/0.25 mm/0.1 μm
CapillaryDB-580.602.5Miller and Bruno, 200330. m/0.25 mm/0.1 μm
PackedApiezon M130.602.Garbuzov, Misharina, et al., 1985He or N2, Chromosorb W, AW-DMCS; Column length: 2.1 m
PackedApiezon M60.586.Mikhailova, Gren, et al., 1985Chromosorb WAW; Column length: 2.1 m
PackedSqualane60.574.Zygmunt and Staszewski, 1981Chromosorb W DMCS; Column length: 2. m
PackedSqualane80.577.Zygmunt and Staszewski, 1981Chromosorb W DMCS; Column length: 2. m
PackedApiezon M130.603.Golovnya and Garbuzov, 1974N2, Chromosorb W; Column length: 2.1 m

Kovats' RI, non-polar column, custom temperature program

View large format table.

Column type Active phase I Reference Comment
CapillaryApiezon M602.Zhu, Wang, et al., 2007Program: not specified

Kovats' RI, polar column, custom temperature program

View large format table.

Column type Active phase I Reference Comment
CapillaryPEG-20M779.Zhu, Wang, et al., 2007Program: not specified

Normal alkane RI, non-polar column, isothermal

View large format table.

Column type Active phase Temperature (C) I Reference Comment
CapillaryPolydimethyl siloxane with 5 % Ph groups100.606.Safa and Hadjmohannadi, 200530. m/0.25 mm/0.10 μm, Nitrogen
CapillaryPolydimethyl siloxane with 5 % Ph groups60.599.Safa and Hadjmohannadi, 200530. m/0.25 mm/0.10 μm, Nitrogen
CapillaryPolydimethyl siloxane with 5 % Ph groups80.602.Safa and Hadjmohannadi, 200530. m/0.25 mm/0.10 μm, Nitrogen

Normal alkane RI, non-polar column, temperature ramp

View large format table.

Column type Active phase I Reference Comment
CapillaryPONA584.Yang, Wang, et al., 200450. m/0.20 mm/0.50 μm, N2, 2. K/min; Tstart: 35. C; Tend: 170. C
CapillaryPONA594.Yang, Wang, et al., 200350. m/0.20 mm/0.50 μm, 2. K/min; Tstart: 30. C; Tend: 150. C
PackedPorapack Q600.Guevas A.P. and Tellez, 1977Helium, Porapak Q, 8. K/min; Column length: 3.5 m; Tstart: 220. C

Normal alkane RI, non-polar column, custom temperature program

View large format table.

Column type Active phase I Reference Comment
CapillaryPONA595.Yang, Wang, et al., 200350. m/0.20 mm/0.50 μm; Program: not specified
CapillaryPolydimethyl siloxanes587.Zenkevich, 1998Program: not specified
CapillaryMethyl Silicone589.Zenkevich and Kuznetsova, 1990Program: not specified

References

Go To: Top, Gas phase ion energetics data, Mass spectrum (electron ionization), Gas Chromatography, Notes

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

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]

Ogata, Onizuka, et al., 1973
Ogata, H.; Onizuka, H.; Nihei, Y.; Kamada, H., The photoelectron spectra of alcohols, mercaptans and amines, Bull. Chem. Soc. Jpn., 1973, 46, 3036. [all data]

Broer and Weringa, 1980
Broer, W.J.; Weringa, W.D., Potential energy profiles for the unimolecular reactions of [C3H7S]+ ions, Org. Mass Spectrom., 1980, 15, 229. [all data]

Bartmess, Scott, et al., 1979
Bartmess, J.E.; Scott, J.A.; McIver, R.T., Jr., The gas phase acidity scale from methanol to phenol, J. Am. Chem. Soc., 1979, 101, 6047. [all data]

Miller and Bruno, 2003
Miller, K.E.; Bruno, T.J., Isothermal Kováts retention indices of sulfur compounds on a poly(5% diphenyl-95% dimethylsiloxane) stationary phase, J. Chromatogr. A, 2003, 1007, 1-2, 117-125, https://doi.org/10.1016/S0021-9673(03)00958-0 . [all data]

Garbuzov, Misharina, et al., 1985
Garbuzov, V.G.; Misharina, T.A.; Aerov, A.F.; Golovnya, R.V., Gas chromatographic retention indices for sulphur(II)-containing organic substances, J. Anal. Chem. USSR (Engl. Transl.), 1985, 40, 4, 576-586. [all data]

Mikhailova, Gren, et al., 1985
Mikhailova, T.V.; Gren, A.I.; Vysotskaja, L.E.; Misharina, T.A.; Vitt, S.V.; Golovnya, R.V., Identification of sulphur-organic compounds obtained by thermal treatment of the meat broths in the presence of alkyl-mercaptopropanol, Nahrung, 1985, 29, 7, 671-680, https://doi.org/10.1002/food.19850290705 . [all data]

Zygmunt and Staszewski, 1981
Zygmunt, B.; Staszewski, R., Retention index and gas chromatographic-mass spectrometric identification of thiols in liquified gas, Chem. Anal. (Warsaw), 1981, 26, 109-113. [all data]

Golovnya and Garbuzov, 1974
Golovnya, R.V.; Garbuzov, V.G., Effect of heteroatom in aliphatic sulfur- and oxygen-containing compounds on the values of the retention indices in gas chromatography, Izv. Akad. Nauk SSSR Ser. Khim., 1974, 7, 1519-1521. [all data]

Zhu, Wang, et al., 2007
Zhu, X.H.; Wang, W.; Schramm, K.-W.; Niu, W., Prediction of the Kova´ ts Retention Indices of Thiols by Use of Quantum Chemical and Physicochemical Descriptors, Chromatographia, 2007, 65, 11-12, 719-724, https://doi.org/10.1365/s10337-007-0237-3 . [all data]

Safa and Hadjmohannadi, 2005
Safa, F.; Hadjmohannadi, M.R., Use of topological indices of organic sulfur compounds in quantitative structure-retention relationship study, QSAR Comb. Sci., 2005, 24, 9, 1026-1032, https://doi.org/10.1002/qsar.200530008 . [all data]

Yang, Wang, et al., 2004
Yang, Y.; Wang, Z.; Zong, B.; Yang, H., Determination of sulfur compounds in fluid catalytic cracking gasoline by gas chromatography with a sulfur chemiluminiscence detector, Chin. J. Chromatogr., 2004, 22, 3, 216-219. [all data]

Yang, Wang, et al., 2003
Yang, Y.-T.; Wang, Z.; Han. J.-H.; Tian, H.-P.; Yang, H.-Y., Determination of sulfur compounds in gasoline fraction of microreactor products by gas chromatography - Atomic emission detector, Petrochemical Technology (Shiyou Huagong), 2003, 32, 11, 995-998. [all data]

Guevas A.P. and Tellez, 1977
Guevas A.P.; Tellez, J.V.G., Determination de mercaptanos de C2 a C4 an muestras gaseosas de hydrocarburos de C4 a C5 por chromatographia en fase vapor, Revista de Instituto Mexicano di Petroleo, 1977, 9, 1, 85-88. [all data]

Zenkevich, 1998
Zenkevich, I.G., The Principle of Structural Analogy in the Calculation of Gas Chromatographic Retention Indices using Physico-Chemical Constants of Organic Compounds, Zh. Anal. Khim. (Rus.), 1998, 53, 1, 43-49. [all data]

Zenkevich and Kuznetsova, 1990
Zenkevich, I.G.; Kuznetsova, L.M., Logic Criteria on Prediction of Gas Chromatographic Retention Indices from Physico-Chemical Properties of Organic Compounds, Dokl. Akad. Nauk SSSR, 1990, 315, 4, 881-885. [all data]


Notes

Go To: Top, Gas phase ion energetics data, Mass spectrum (electron ionization), Gas Chromatography, References