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Thiourea, tetramethyl-

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Gas phase thermochemistry data

Go To: Top, Condensed phase thermochemistry data, Phase change data, Gas phase ion energetics data, Mass spectrum (electron ionization), UV/Visible 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: Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein

Quantity Value Units Method Reference Comment
Deltafgas44.7 ± 2.3kJ/molCcrInagaki, Murata, et al., 1982 

Condensed phase thermochemistry data

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

Data compiled by: Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein

Quantity Value Units Method Reference Comment
Deltafsolid-38.3 ± 2.3kJ/molCcrInagaki, Murata, et al., 1982 
Quantity Value Units Method Reference Comment
Deltacsolid-4246.7 ± 2.2kJ/molCcrInagaki, Murata, et al., 1982 

Phase change data

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

Data compiled as indicated in comments:
AC - William E. Acree, Jr., James S. Chickos
ALS - Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein

Quantity Value Units Method Reference Comment
Deltasub85. ± 3.kJ/molMEDella Gatta, Józwiak, et al., 2000AC
Deltasub84.0kJ/molN/AFerro, Martino, et al., 1994AC
Deltasub83.0 ± 0.5kJ/molCMurata, Sakiyama, et al., 1985AC
Deltasub83.03 ± 0.20kJ/molCInagaki, Murata, et al., 1982ALS
Deltasub83.0 ± 0.2kJ/molCInagaki, Murata, et al., 1982AC

Enthalpy of sublimation

DeltasubH (kJ/mol) Temperature (K) Method Reference Comment
83. ± 3.0333.TEFerro, Martino, et al., 1994AC

Enthalpy of fusion

DeltafusH (kJ/mol) Temperature (K) Method Reference Comment
22.14350.4DSCDella Gatta, Józwiak, et al., 2000AC

Gas phase ion energetics data

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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:
LBLHLM - Sharon G. Lias, John E. Bartmess, Joel F. Liebman, John L. Holmes, Rhoda D. Levin, and W. Gary Mallard
LLK - Sharon G. Lias, Rhoda D. Levin, and Sherif A. Kafafi
RDSH - Henry M. Rosenstock, Keith Draxl, Bruce W. Steiner, and John T. Herron

Quantity Value Units Method Reference Comment
Proton affinity (review)947.6kJ/molN/AHunter and Lias, 1998HL
Quantity Value Units Method Reference Comment
Gas basicity916.6kJ/molN/AHunter and Lias, 1998HL

Ionization energy determinations

IE (eV) Method Reference Comment
7.82 ± 0.03PEGuimon, Pfister-Guillouzo, et al., 1974LLK
7.95 ± 0.05EIBaldwin, Maccoll, et al., Ind. 1966RDSH
7.84PERoth, Bock, et al., 1985Vertical value; LBLHLM
7.84PEMines and Thompson, 1975Vertical value; LLK
7.82PEGuimon, Gonbeau, et al., 1974Vertical value; LLK

Appearance energy determinations

Ion AE (eV) Other Products MethodReferenceComment
C2H6N+10.35?EILoudon and Webb, 1977LLK
C3H6NS+11.20?EILoudon and Webb, 1977LLK

Mass spectrum (electron ionization)

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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

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Mass spectrum
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Additional Data

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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-1872
NIST MS number 227759

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.


UV/Visible spectrum

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

Data compiled by: Victor Talrose, Alexander N. Yermakov, Alexy A. Usov, Antonina A. Goncharova, Axlexander N. Leskin, Natalia A. Messineva, Natalia V. Trusova, Margarita V. Efimkina

Spectrum

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UVVis spectrum
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Additional Data

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Source Koch, 1949
Owner INEP CP RAS, NIST OSRD
Collection (C) 2007 copyright by the U.S. Secretary of Commerce
on behalf of the United States of America. All rights reserved.
Origin INSTITUTE OF ENERGY PROBLEMS OF CHEMICAL PHYSICS, RAS
Source reference RAS UV No. 11276
Instrument n.i.g.
Melting point 46.3
Boiling point 332; 190/ 16 mm

References

Go To: Top, Gas phase thermochemistry data, Condensed phase thermochemistry data, Phase change data, Gas phase ion energetics data, Mass spectrum (electron ionization), UV/Visible spectrum, Notes

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

Inagaki, Murata, et al., 1982
Inagaki, S.; Murata, S.; Sakiyama, M., Thermochemical studies on thioacetamide and tetramethylthiourea. Estimation of stablization energies due to interaction between thiocarbonyl group and neighboring nitrogen atom, Bull. Chem. Soc. Jpn., 1982, 55, 2808-2813. [all data]

Della Gatta, Józwiak, et al., 2000
Della Gatta, Giuseppe; Józwiak, Malgorzata; Brunetti, Bruno; Abate, Lorenzo, Enthalpies and entropies of fusion and of sublimation at the temperature 298.15 K of thiourea and sevenN-alkylthioureas, The Journal of Chemical Thermodynamics, 2000, 32, 8, 979-997, https://doi.org/10.1006/jcht.2000.0662 . [all data]

Ferro, Martino, et al., 1994
Ferro, Daniela; Martino, Rosalba; Gatta, Giuseppe Della, Sublimation enthalpies and entropies of thiourea, 1-methyl-2-thiourea, 1,3-dimethyl-2-thiourea, and 1,1,3,3-tetramethyl-2-thiourea, The Journal of Chemical Thermodynamics, 1994, 26, 2, 183-190, https://doi.org/10.1006/jcht.1994.1037 . [all data]

Murata, Sakiyama, et al., 1985
Murata, S.; Sakiyama, M.; Seki, S., Sublimation calorimetric studies using a calvet microcalorimeter, Thermochimica Acta, 1985, 88, 1, 121-126, https://doi.org/10.1016/0040-6031(85)85419-8 . [all data]

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]

Guimon, Pfister-Guillouzo, et al., 1974
Guimon, C.; Pfister-Guillouzo, G.; Arbelot, M.; Chanon, M., Electronic structure of sulphur compounds. VII. Photoelectron spectra of thiocarbonyl J. Heterocycl. Chem.., Tetrahedron, 1974, 30, 3831. [all data]

Baldwin, Maccoll, et al., Ind. 1966
Baldwin, M.; Maccoll, A.; Kirkien-Konasiewicz, A.; Saville, B., Ionisation potentials of the N-methylated thioureas, Chem., Ind. 1966, 286. [all data]

Roth, Bock, et al., 1985
Roth, B.; Bock, H.; Gotthardt, H., Radikalionen 66. Thioparabansaure-derivate: Ionisation zum Radikalkation und reduktion zum radikalanion, Phosphorus Sulfur, 1985, 22, 109. [all data]

Mines and Thompson, 1975
Mines, G.W.; Thompson, H.W., The photoelectron spectra of amides, thioamides, ureas and thioureas, Spectrochim. Acta, 1975, 31, 137. [all data]

Guimon, Gonbeau, et al., 1974
Guimon, C.; Gonbeau, D.; Pfister-Guillouzo, G.; Asbrink, L.; Sandstrom, J., Electronic structure of sulphur compounds. VI. Photoelectron spectra of some simple thiocarbonyl compounds, J. Electron Spectrosc. Relat. Phenom., 1974, 4, 49. [all data]

Loudon and Webb, 1977
Loudon, A.G.; Webb, K.S., The nature of the [C2H6N]+ and [CH4N]+ ions formed by electron impact on methylated formamides, acetamides, ureas, thioureas and hexamethylphosphoramide, Org. Mass Spectrom., 1977, 12, 283. [all data]

Koch, 1949
Koch, H.P., J. Chem. Soc., 1949, 401. [all data]


Notes

Go To: Top, Gas phase thermochemistry data, Condensed phase thermochemistry data, Phase change data, Gas phase ion energetics data, Mass spectrum (electron ionization), UV/Visible spectrum, References