Home Symbol which looks like a small house Up Solid circle with an upward pointer in it

Germane, tetramethyl-

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.


Phase change data

Go To: Top, References, Notes

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, Kenneth Kroenlein 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, 1970Uncertainty assigned by TRC = 0.01 K; TRC
Quantity Value Units Method Reference Comment
Deltavap6.52 ± 0.1kcal/molCC-SBAbraham and Irving, 1980Other values for the enthalpy of vaporization have been reported: 6.60 ± 0.50 kcal/mol Shaulov, Federov, et al., 1969 and 6.81 kcal/mol Long and Pulford, 1986.; MS

Enthalpy of vaporization

DeltavapH (kcal/mol) Temperature (K) Method Reference Comment
6.7220285.N/AValerga and Kilpatrick, 1970, 2P = 1 atm; DH
6.72 ± 0.02285.CValerga, 1970AC

Entropy of vaporization

DeltavapS (cal/mol*K) Temperature (K) Reference Comment
23.6285.Valerga and Kilpatrick, 1970, 2P; DH

Antoine Equation Parameters

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

View plot Requires a JavaScript / HTML 5 canvas capable browser.

Temperature (K) A B C Reference Comment
200.0 - 317.4.10531166.492-33.005Stull, 1947Coefficents calculated by NIST from author's data.

Enthalpy of fusion

DeltafusH (kcal/mol) Temperature (K) Reference Comment
1.7799184.368Valerga and Kilpatrick, 1970, 2DH
1.78184.4Valerga, 1970AC

Entropy of fusion

DeltafusS (cal/mol*K) Temperature (K) Reference Comment
9.653184.368Valerga and Kilpatrick, 1970, 2DH

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:


References

Go To: Top, Phase change data, Notes

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

Valerga and Kilpatrick, 1970
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]

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

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

Valerga and Kilpatrick, 1970, 2
Valerga, A.J.; Kilpatrick, J.E., Entropy related thermodynamic properties of tetramethylgermane, J. Chem. Phys., 1970, 52, 4545-4549. [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]


Notes

Go To: Top, Phase change data, References