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Germane, tetramethyl-

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Gas 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: José A. Martinho Simões

Quantity Value Units Method Reference Comment
Deltafgas-72.8 ± 8.7kJ/molReviewMartinho Simões 
Deltafgas-107.5 ± 6.4kJ/molReviewMartinho SimõesSelected data.

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 as indicated in comments:
MS - José A. Martinho Simões
DH - Eugene S. Domalski and Elizabeth D. Hearing

Quantity Value Units Method Reference Comment
Deltafliquid-100.1 ± 8.7kJ/molReviewMartinho SimõesMS
Deltafliquid-134.8 ± 6.4kJ/molReviewMartinho SimõesSelected data.; MS
Quantity Value Units Method Reference Comment
Deltacliquid-3708.9 ± 6.3kJ/molCC-SBLong and Pulford, 1986MS
Deltacliquid-3727.9 ± 8.4kJ/molCC-SBShaulov, Federov, et al., 1969Please also see Pedley and Rylance, 1977.; MS
Quantity Value Units Method Reference Comment
liquid296.80J/mol*KN/AValerga and Kilpatrick, 1970DH

Constant pressure heat capacity of liquid

Cp,liquid (J/mol*K) Temperature (K) Reference Comment
196.9300.Valerga and Kilpatrick, 1970T = 15 to 300 K.; DH

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:
TRC - Thermodynamics Research Center, NIST Boulder Laboratories, Chris Muzny, director
MS - José A. Martinho Simões
DH - Eugene S. Domalski and Elizabeth D. Hearing
AC - William E. Acree, Jr., James S. Chickos

Quantity Value Units Method Reference Comment
Ttriple184.360KN/AValerga and Kilpatrick, 1970, 2Uncertainty assigned by TRC = 0.01 K; TRC
Quantity Value Units Method Reference Comment
Deltavap27.3 ± 0.4kJ/molCC-SBAbraham and Irving, 1980Other values for the enthalpy of vaporization have been reported: 27.6 ± 2.1 kJ/mol Shaulov, Federov, et al., 1969 and 28.5 kJ/mol Long and Pulford, 1986.; MS

Enthalpy of vaporization

DeltavapH (kJ/mol) Temperature (K) Method Reference Comment
28.125285.N/AValerga and Kilpatrick, 1970P = 1 atm; DH
28.1 ± 0.1285.CValerga, 1970AC

Entropy of vaporization

DeltavapS (J/mol*K) Temperature (K) Reference Comment
98.7285.Valerga and Kilpatrick, 1970P; DH

Antoine Equation Parameters

log10(P) = A − (B / (T + C))
    P = vapor pressure (bar)
    T = temperature (K)

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Temperature (K) A B C Reference Comment
200.0 - 317.4.11101166.492-33.005Stull, 1947Coefficents calculated by NIST from author's data.

Enthalpy of fusion

DeltafusH (kJ/mol) Temperature (K) Reference Comment
7.4471184.368Valerga and Kilpatrick, 1970DH
7.45184.4Valerga, 1970AC

Entropy of fusion

DeltafusS (J/mol*K) Temperature (K) Reference Comment
40.39184.368Valerga and Kilpatrick, 1970DH

In addition to the Thermodynamics Research Center (TRC) data available from this site, much more physical and chemical property data is available from the following TRC products:


Reaction 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: José A. Martinho Simões

Note: Please consider using the reaction search for this species. This page allows searching of all reactions involving this species. A general reaction search form is also available. Future versions of this site may rely on reaction search pages in place of the enumerated reaction displays seen below.

Individual Reactions

Germane, tetramethyl- (g) = C3H9Ge (g) + Methane (g)

By formula: C4H12Ge (g) = C3H9Ge (g) + CH4 (g)

Quantity Value Units Method Reference Comment
Deltar339. ± 13.kJ/molVLPPSmith and Patrick, 1983 
Deltar347. ± 17.kJ/molN/AMcMillen and Golden, 1982 

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-8637
NIST MS number 233396

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References

Go To: Top, Gas phase thermochemistry data, Condensed phase thermochemistry data, Phase change data, Reaction thermochemistry data, Mass spectrum (electron ionization), Notes

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

Martinho Simões
Martinho Simões, J.A., Private communication (see http://webbook.nist.gov/chemistry/om/). [all data]

Long and Pulford, 1986
Long, L.H.; Pulford, C.I., J. Chem. Soc., Faraday Trans. 2, 1986, 82, 567. [all data]

Shaulov, Federov, et al., 1969
Shaulov, Yu.Kh.; Federov, A.K.; Genchel, V.G., Russ. J. Phys. Chem., 1969, 43, 744. [all data]

Pedley and Rylance, 1977
Pedley, J.B.; Rylance, J., Computer Analysed Thermochemical Data: Organic and Organometallic Compounds, University of Sussex, Brigton, 1977. [all data]

Valerga and Kilpatrick, 1970
Valerga, A.J.; Kilpatrick, J.E., Entropy related thermodynamic properties of tetramethylgermane, J. Chem. Phys., 1970, 52, 4545-4549. [all data]

Valerga and Kilpatrick, 1970, 2
Valerga, A.J.; Kilpatrick, J.E., Entropy and Related Thermodynamic Properties of Tetramethylgermane, J. Chem. Phys., 1970, 52, 9, 4545, https://doi.org/10.1063/1.1673681 . [all data]

Abraham and Irving, 1980
Abraham, M.H.; Irving, R.J., J. Chem. Thermodyn., 1980, 12, 539. [all data]

Valerga, 1970
Valerga, Antone J., Entropy and Related Thermodynamic Properties of Tetramethylgermane, J. Chem. Phys., 1970, 52, 9, 4545, https://doi.org/10.1063/1.1673681 . [all data]

Stull, 1947
Stull, Daniel R., Vapor Pressure of Pure Substances. Organic and Inorganic Compounds, Ind. Eng. Chem., 1947, 39, 4, 517-540, https://doi.org/10.1021/ie50448a022 . [all data]

Smith and Patrick, 1983
Smith, G.P.; Patrick, R., Int. J. Chem. Kinet., 1983, 15, 167. [all data]

McMillen and Golden, 1982
McMillen, D.F.; Golden, D.M., Hydrocarbon bond dissociation energies, Ann. Rev. Phys. Chem., 1982, 33, 493. [all data]


Notes

Go To: Top, Gas phase thermochemistry data, Condensed phase thermochemistry data, Phase change data, Reaction thermochemistry data, Mass spectrum (electron ionization), References