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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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, 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 | Uncertainty assigned by TRC = 0.02 K; TRC |
Ttriple | 180.3 | K | N/A | Maslova, Rabinovich, et al., 1972 | Uncertainty assigned by TRC = 0.2 K; TRC |
Quantity | Value | Units | Method | Reference | Comment |
ΔvapH° | 10.9 ± 0.1 | kcal/mol | CC-SB | Abraham and Irving, 1980 | Other values for the enthalpy of vaporization have been reported: 10.7 ± 0.31 kcal/mol Rabinovich, Tel'noi, et al., 1963 and 9.70 kcal/mol Shaulov, Federov, et al., 1969.; MS |
ΔvapH° | 10.9 ± 0.1 | kcal/mol | C | Peacock and Fuchs, 1977 | AC |
Enthalpy of vaporization
ΔvapH (kcal/mol) | Temperature (K) | Method | Reference | Comment |
---|---|---|---|---|
10.4 | 273. | GS | Gazicki, 1992 | Based on data from 253. to 293. K.; AC |
11.0 | 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 (atm)
T = temperature (K)
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Temperature (K) | A | B | C | Reference | Comment |
---|---|---|---|---|---|
337.39 to 436.69 | 3.62197 | 1217.454 | -101.57 | Mogul, Hochberg, et al., 1974 | Coefficents calculated by NIST from author's data. |
Enthalpy of fusion
ΔfusH (kcal/mol) | Temperature (K) | Reference | Comment |
---|---|---|---|
2.9426 | 179.99 | Rabinovich, Sheiman, et al., 1985, 2 | DH |
3.0151 | 180.3 | Maslova, Rabinovich, et al., 1972, 2 | DH |
2.9651 | 180.47 | Staveley, Warren, et al., 1954, 2 | DH |
2.942 | 180.3 | Domalski and Hearing, 1996 | AC |
Entropy of fusion
ΔfusS (cal/mol*K) | Temperature (K) | Reference | Comment |
---|---|---|---|
16.25 | 179.99 | Rabinovich, Sheiman, et al., 1985, 2 | DH |
16.7 | 180.3 | Maslova, Rabinovich, et al., 1972, 2 | DH |
16.43 | 180.47 | Staveley, Warren, et al., 1954, 2 | DH |
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.
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
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
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]
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]
Shaulov, Federov, et al., 1969
Shaulov, Yu.Kh.; Federov, A.K.; Genchel, V.G.,
Russ. J. Phys. Chem., 1969, 43, 744. [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]
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,
Zhur. Fiz. Khim., 1985, 59, 2414-2417. [all data]
Maslova, Rabinovich, et al., 1972, 2
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]
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, Phase change data, References
- Symbols used in this document:
Tboil Boiling point Tfus Fusion (melting) point Ttriple Triple point temperature 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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