Germane, tetramethyl-

• Formula: C₄H₁₂Ge
• Molecular weight: 132.78
• IUPAC Standard InChI: InChI=1S/C4H12Ge/c1-5(2,3)4/h1-4H3 Copy

  
• IUPAC Standard InChIKey: ZRLCXMPFXYVHGS-UHFFFAOYSA-N Copy
• CAS Registry Number: 865-52-1
• Chemical structure:
  This structure is also available as a 2d Mol file
• Other names: Tetramethylgermane; Tetramethylgermanium; (CH3)4Ge; Germanium, tetramethyl-
• Permanent link for this species. Use this link for bookmarking this species for future reference.
• Information on this page:
  • Gas phase thermochemistry data
  • Condensed phase thermochemistry data
  • Phase change data
  • Reaction thermochemistry data
  • Gas phase ion energetics data
  • References
  • Notes
• Other data available:
  • Mass spectrum (electron ionization)
• Data at other public NIST sites:
  • Gas Phase Kinetics Database
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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

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

Constant pressure heat capacity of liquid

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

Enthalpy of vaporization

Entropy of vaporization

Antoine Equation Parameters

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

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Enthalpy of fusion

Entropy of fusion

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

 (g) = C₃H₉Ge (g) +  (g)

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

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 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

Ionization energy determinations

Appearance energy determinations

References

Go To: Top, Gas phase thermochemistry data, Condensed phase thermochemistry data, Phase change data, Reaction thermochemistry data, Gas phase ion energetics data, 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]

MacLean and Sacher, 1974
MacLean, D.I.; Sacher, R.E., A study of some spectroscopic properties of Group IVA acetylides, J. Organomet. Chem., 1974, 74, 197. [all data]

Jonas, Schweitzer, et al., 1973
Jonas, A.E.; Schweitzer, G.K.; Grimm, F.A.; Carlson, T.A., The photoelectron spectra of the tetrafluoro and tetramethyl compounds of the group IV elements, J. Electron Spectrosc. Relat. Phenom., 1973, 1, 29. [all data]

Evans, Green, et al., 1972
Evans, S.; Green, J.C.; Joachim, P.J.; Orchard, A.F.; Turner, D.W.; Maier, J.P., Electronic structures of the Group IV_B tetramethyls by helium-(I) photoelectron spectroscopy, J. Chem. Soc. Faraday Trans. 2, 1972, 68, 905. [all data]

Lappert, Pedley, et al., 1971
Lappert, M.F.; Pedley, J.B.; Simpson, J.; Spalding, T.R., Bonding studies of compounds of boron and the Group IV elements. VI. Mass spectrometric studies on compounds Me₄M and Me₃M-M'Me₃ (M and M'=C, Si, Ge, Sn, and Pb): thermochemical data, J. Organomet. Chem., 1971, 29, 195. [all data]

Lappert, Simpson, et al., 1969
Lappert, M.F.; Simpson, J.; Spalding, T.R., Bonding studies of compounds of the group IV elements: ionisation potentials of the Me₃M radicals, J.Organometal. Chem., 1969, 17, PI. [all data]

deRidder and Dijkstra, 1967
deRidder, J.J.; Dijkstra, G., Mass spectra of the tetramethyl and tetraethyl compounds of carbon, silicon, germanium, tin and lead, Rec. Trav. Chim., 1967, 86, 737. [all data]

Hobrock and Kiser, 1962
Hobrock, B.G.; Kiser, R.W., Electron impact spectroscopy of tetramethylgermanium, trimethylsilane, and dimethylmercury, J. Phys. Chem., 1962, 66, 155. [all data]

Notes

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• Symbols used in this document:
  

  AE	Appearance energy
  Cp,liquid	Constant pressure heat capacity of liquid
  S°liquid	Entropy of liquid at standard conditions
  Ttriple	Triple point temperature
  ΔcH°liquid	Enthalpy of combustion of liquid at standard conditions
  ΔfH°gas	Enthalpy of formation of gas at standard conditions
  ΔfH°liquid	Enthalpy of formation of liquid at standard conditions
  ΔfusH	Enthalpy of fusion
  ΔfusS	Entropy of fusion
  ΔrH°	Enthalpy of reaction at standard conditions
  ΔvapH	Enthalpy of vaporization
  ΔvapH°	Enthalpy of vaporization at standard conditions
  ΔvapS	Entropy of vaporization

• Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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