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
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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 |
---|---|---|---|---|---|
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
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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 |
---|---|---|---|---|---|
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 |
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
IE (eV) | Method | Reference | Comment |
---|---|---|---|
8.9 | PE | Schweig, Weidner, et al., 1973 | LLK |
9.8 | EI | deRidder and Dijkstra, 1967 | RDSH |
9.3 | PE | Schweig, Weidner, et al., 1973 | Vertical value; LLK |
Appearance energy determinations
Ion | AE (eV) | Other Products | Method | Reference | Comment |
---|---|---|---|---|---|
C2H5Ge+ | 16.7 | ? | EI | deRidder and Dijkstra, 1967 | RDSH |
C2H7Ge+ | 13.2 | ? | EI | deRidder and Dijkstra, 1967 | RDSH |
C4H11Ge+ | 11.4 | ? | EI | deRidder and Dijkstra, 1967 | RDSH |
C6H15Ge+ | 9.6 | ? | EI | deRidder and Dijkstra, 1967 | RDSH |
Ge+ | 17.4 | ? | EI | deRidder and Dijkstra, 1967 | RDSH |
GeH+ | 21.6 | ? | EI | deRidder and Dijkstra, 1967 | RDSH |
GeH3+ | 16.3 | ? | EI | deRidder and Dijkstra, 1967 | RDSH |
References
Go To: Top, Gas phase thermochemistry data, Condensed phase 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]
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]
Schweig, Weidner, et al., 1973
Schweig, A.; Weidner, U.; Manuel, G.,
Theory and application of photoelectron spectroscopy. XVI. Photoelectron spectroscopy and molecular conformations: Ge-C and Sn-C hyperconjugation and the conformation of allylgermanes and stannanes,
J. Organomet. Chem., 1973, 54, 145. [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]
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 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 - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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