Tetraethylgermanium
- Formula: C8H20Ge
- Molecular weight: 188.88
- IUPAC Standard InChIKey: QQXSEZVCKAEYQJ-UHFFFAOYSA-N
- CAS Registry Number: 597-63-7
- Chemical structure:
This structure is also available as a 2d Mol file or as a computed 3d SD file
The 3d structure may be viewed using Java or Javascript. - Other names: Germane, tetraethyl-; Tetraethylgermane; (C2H5)4Ge; Germanium, tetraethyl-
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Gas phase thermochemistry data
Go To: Top, Condensed phase thermochemistry data, Phase change 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: José A. Martinho Simões
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔfH°gas | -142.9 ± 3.9 | kJ/mol | Review | Martinho Simões | |
ΔfH°gas | -158.4 ± 7.5 | kJ/mol | Review | Martinho Simões | |
ΔfH°gas | -164.9 ± 6.5 | kJ/mol | Review | Martinho Simões | Selected data. |
ΔfH°gas | -156.8 ± 4.8 | kJ/mol | Review | Martinho Simões |
Condensed phase thermochemistry data
Go To: Top, Gas phase thermochemistry data, Phase change 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 as indicated in comments:
MS - José A. Martinho Simões
DH - Eugene S. Domalski and Elizabeth D. Hearing
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔfH°liquid | -188.6 ± 3.9 | kJ/mol | Review | Martinho Simões | MS |
ΔfH°liquid | -204.1 ± 7.5 | kJ/mol | Review | Martinho Simões | MS |
ΔfH°liquid | -210.6 ± 6.5 | kJ/mol | Review | Martinho Simões | Selected data.; MS |
ΔfH°liquid | -202.5 ± 4.8 | kJ/mol | Review | Martinho Simões | MS |
Quantity | Value | Units | Method | Reference | Comment |
ΔcH°liquid | -6342.9 ± 4.2 | kJ/mol | CC-SB | Shaulov, Federov, et al., 1969 | MS |
ΔcH°liquid | -6350.5 ± 6.3 | kJ/mol | CC-RB | Bills and Cotton, 1964 | Please also see Pedley and Rylance, 1977 and Cox and Pilcher, 1970.; MS |
ΔcH°liquid | -6356.8 ± 3.2 | kJ/mol | CC-SB | Pope and Skinner, 1964 | Please also see Cox and Pilcher, 1970.; MS |
ΔcH°liquid | -6341.3 ± 7.1 | kJ/mol | CC-SB | Rabinovich, Tel'noi, et al., 1963 | Please also see Cox and Pilcher, 1970.; MS |
Quantity | Value | Units | Method | Reference | Comment |
S°liquid | 428.8 | J/mol*K | N/A | Rabinovich, Sheiman, et al., 1985 | DH |
Constant pressure heat capacity of liquid
Cp,liquid (J/mol*K) | Temperature (K) | Reference | Comment |
---|---|---|---|
294.7 | 298.15 | Rabinovich, Sheiman, et al., 1985 | T = 8 to 300 K.; DH |
309.6 | 298.15 | Maslova, Rabinovich, et al., 1972 | T = 60 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
AC - William E. Acree, Jr., James S. Chickos
DH - Eugene S. Domalski and Elizabeth D. Hearing
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
Tboil | 435.4 | K | N/A | Dibrivnyi, Dolbneva, et al., 1986 | Uncertainty assigned by TRC = 0.5 K; TRC |
Quantity | Value | Units | Method | Reference | Comment |
Tfus | 180.47 | K | N/A | Staveley, Warren, et al., 1954 | Uncertainty assigned by TRC = 0.2 K; TRC |
Quantity | Value | Units | Method | Reference | Comment |
Ttriple | 179.99 | K | N/A | Rabinovich, Sheiman, et al., 1985, 2 | Uncertainty assigned by TRC = 0.02 K; TRC |
Ttriple | 180.3 | K | N/A | Maslova, Rabinovich, et al., 1972, 2 | Uncertainty assigned by TRC = 0.2 K; TRC |
Quantity | Value | Units | Method | Reference | Comment |
ΔvapH° | 45.7 ± 0.4 | kJ/mol | CC-SB | Abraham and Irving, 1980 | Other values for the enthalpy of vaporization have been reported: 44.8 ± 1.3 kJ/mol Rabinovich, Tel'noi, et al., 1963 and 40.6 kJ/mol Shaulov, Federov, et al., 1969.; MS |
ΔvapH° | 45.7 ± 0.4 | kJ/mol | C | Peacock and Fuchs, 1977 | AC |
Enthalpy of vaporization
ΔvapH (kJ/mol) | Temperature (K) | Method | Reference | Comment |
---|---|---|---|---|
43.4 | 273. | GS | Gazicki, 1992 | Based on data from 253. to 293. K.; AC |
46.1 | 352. | N/A | Mogul, Hochberg, et al., 1974 | Based on data from 337. to 436. K.; AC |
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 |
---|---|---|---|---|---|
337.39 to 436.69 | 3.62768 | 1217.454 | -101.57 | Mogul, Hochberg, et al., 1974 | Coefficents calculated by NIST from author's data. |
Enthalpy of fusion
ΔfusH (kJ/mol) | Temperature (K) | Reference | Comment |
---|---|---|---|
12.312 | 179.99 | Rabinovich, Sheiman, et al., 1985 | DH |
12.615 | 180.3 | Maslova, Rabinovich, et al., 1972 | DH |
12.406 | 180.47 | Staveley, Warren, et al., 1954, 2 | DH |
12.31 | 180.3 | Domalski and Hearing, 1996 | AC |
Entropy of fusion
ΔfusS (J/mol*K) | Temperature (K) | Reference | Comment |
---|---|---|---|
68.00 | 179.99 | Rabinovich, Sheiman, et al., 1985 | DH |
70.0 | 180.3 | Maslova, Rabinovich, et al., 1972 | DH |
68.74 | 180.47 | Staveley, Warren, et al., 1954, 2 | DH |
Mass spectrum (electron ionization)
Go To: Top, Gas phase thermochemistry data, Condensed phase thermochemistry data, Phase change data, 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
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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-8638 |
NIST MS number | 236751 |
References
Go To: Top, Gas phase thermochemistry data, Condensed phase thermochemistry data, Phase change 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]
Shaulov, Federov, et al., 1969
Shaulov, Yu.Kh.; Federov, A.K.; Genchel, V.G.,
Russ. J. Phys. Chem., 1969, 43, 744. [all data]
Bills and Cotton, 1964
Bills, J.L.; Cotton, F.A.,
J. Phys. Chem., 1964, 68, 806. [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]
Cox and Pilcher, 1970
Cox, J.D.; Pilcher, G.,
Thermochemistry of Organic and Organometallic Compounds
in Academic Press, New York, 1970. [all data]
Pope and Skinner, 1964
Pope, A.E.; Skinner, H.A.,
Thermochemistry of metallic alkyls. Part 12.?Heat of combustion of tetraethyl germanium and of tetrapropyl germanium,
Trans. Faraday Soc., 1964, 60, 1404, https://doi.org/10.1039/tf9646001404
. [all data]
Rabinovich, Tel'noi, et al., 1963
Rabinovich, I.B.; Tel'noi, V.I.; Karyakin, N.V.; Razuvaev, G.A.,
Dokl. Akad. Nauk SSSR, 1963, 149, 324. [all data]
Rabinovich, Sheiman, et al., 1985
Rabinovich, I.B.; Sheiman, M.S.; Nistratov, V.P.; Kamelova, G.P.; Zorin, A.D.,
The heat capacity and thermodynamic characteristics of tetraethylgermane,
Zhur. Fiz. Khim., 1985, 59, 2414-2417. [all data]
Maslova, Rabinovich, et al., 1972
Maslova, V.A.; Rabinovich, I.B.; Nistoalov, V.P.; Faminskaya, L.A.,
Specific heat and phase transitions of some alkyl compounds of silicon, germanium, and tin,
Tr. Khim. Khim. Tekhnol., 1972, (2), 44-50. [all data]
Dibrivnyi, Dolbneva, et al., 1986
Dibrivnyi, V.N.; Dolbneva, T.N.; Dikii, M.A.,
Saturated vapor pressure and vaporization enthalpies of aromatic peroxides
in Vses. Konf. po Kalorimetrii i Khim. Termodinamike, 11th, Novosibirsk, Nr 2, p 115, 1986. [all data]
Staveley, Warren, et al., 1954
Staveley, L.A.K.; Warren, J.B.; Paget, H.P.; Dowrick, D.J.,
Some Thermodynamic Properties of Compounds of the Formula MX4 II. Tetraalkyl Compounds,
J. Chem. Soc., 1954, 1954, 1992. [all data]
Rabinovich, Sheiman, et al., 1985, 2
Rabinovich, I.B.; Sheiman, M.S.; Nistratov, V.P.; Kamelova, G.P.; Zorin, A.D.,
The heat capacity and thermodynamic characteristics of tetraethylgermane,
Zh. Fiz. Khim., 1985, 59, 2414. [all data]
Maslova, Rabinovich, et al., 1972, 2
Maslova, V.A.; Rabinovich, I.B.; Nistoalov, V.P.; Faminskaya, L.A.,
Specific heat and phase transition of some alkyl compounds of silicon, germanium, and tin,
Tr. Khim. Khim. Tekhnol., 1972, 1972, 44. [all data]
Abraham and Irving, 1980
Abraham, M.H.; Irving, R.J.,
J. Chem. Thermodyn., 1980, 12, 539. [all data]
Peacock and Fuchs, 1977
Peacock, L. Alan; Fuchs, Richard,
Enthalpy of vaporization measurements by gas chromatography,
J. Am. Chem. Soc., 1977, 99, 16, 5524-5525, https://doi.org/10.1021/ja00458a070
. [all data]
Gazicki, 1992
Gazicki, Maciej,
Precise measurement of flow rates of vaporized tetraethylgermanium carried by an inert gas,
J. Vac. Sci. Technol. A, 1992, 10, 1, 51-555, https://doi.org/10.1116/1.578149
. [all data]
Mogul, Hochberg, et al., 1974
Mogul, Philip H.; Hochberg, Marc C.; Michiel, Robert; Nestel, Glenn K.; Wamsley, Brian L.; Coren, Seth D.,
Physical properties of tetra-n-alkylgermanes (C1-C6),
J. Chem. Eng. Data, 1974, 19, 1, 4-6, https://doi.org/10.1021/je60060a029
. [all data]
Staveley, Warren, et al., 1954, 2
Staveley, L.A.K.; Warren, J.B.; Paget, H.P.; Dowrick, D.J.,
Some thermodynamic properties of compounds of the formula MX4. Part II. Tetra-alkyl compounds, 1954, J. [all data]
Domalski and Hearing, 1996
Domalski, Eugene S.; Hearing, Elizabeth D.,
Heat Capacities and Entropies of Organic Compounds in the Condensed Phase. Volume III,
J. Phys. Chem. Ref. Data, 1996, 25, 1, 1, https://doi.org/10.1063/1.555985
. [all data]
Notes
Go To: Top, Gas phase thermochemistry data, Condensed phase thermochemistry data, Phase change data, Mass spectrum (electron ionization), References
- Symbols used in this document:
Cp,liquid Constant pressure heat capacity of liquid S°liquid Entropy of liquid at standard conditions Tboil Boiling point Tfus Fusion (melting) point 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 ΔvapH Enthalpy of vaporization ΔvapH° Enthalpy of vaporization at standard conditions - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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