germanium(4+) ethanolate
- Formula: C8H20GeO4
- Molecular weight: 252.88
- CAS Registry Number: 14165-55-0
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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 | -965.6 ± 3.1 | kJ/mol | Review | Martinho Simões | The enthalpy of formation has been derived on the basis of GeO2(am). |
Condensed phase thermochemistry data
Go To: Top, Gas 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: José A. Martinho Simões
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔfH°liquid | -1008.7 ± 3.1 | kJ/mol | Review | Martinho Simões | The enthalpy of formation has been derived on the basis of GeO2(am). |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔcH°liquid | -5536.7 ± 2.1 | kJ/mol | CC-SB | Shaulov, Fedorov, et al., 1970 | Please also see Pedley and Rylance, 1977. Authors have accepted the formation of GeO2(cr, hexagonal). |
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:
AC - William E. Acree, Jr., James S. Chickos
MS - José A. Martinho Simões
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔvapH° | 56.7 | kJ/mol | N/A | Pangrác, Fulem, et al., 2008 | Based on data from 259. - 303. K.; AC |
| ΔvapH° | 43.1 ± 0.4 | kJ/mol | CC-SB | Shaulov, Fedorov, et al., 1970 | Another value for the enthalpy of vaporization has been reported: 53.9 ± 0.3 kJ/mol Grinberg, Chernaya, et al., 1988.; MS |
Enthalpy of vaporization
| ΔvapH (kJ/mol) | Temperature (K) | Reference | Comment |
|---|---|---|---|
| 53.9 | 389. | Grinberg, Chernaya, et al., 1988, 2 | See also Pangrác, Fulem, et al., 2008.; AC |
| 53.6 | 406. | Balanevskaya, Rudnev, et al., 1977 | See also Pangrác, Fulem, et al., 2008.; AC |
| 47.9 | 371. | Bradley, Kay, et al., 1958 | Based on data from 328. - 414. K.; AC |
| 46.6 | 403. | Johnson and Fritz, 1953 | See also Pangrác, Fulem, et al., 2008.; AC |
References
Go To: Top, Gas phase thermochemistry data, Condensed phase thermochemistry data, Phase change 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, Fedorov, et al., 1970
Shaulov, Yu.Kh.; Fedorov, A.K.; Zueva, G.Ya.; Borisyuk, G.V.; Genchel, V.G.,
Russ. J. Phys. Chem., 1970, 44, 1181. [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]
Pangrác, Fulem, et al., 2008
Pangrác, J.; Fulem, M.; Hulicius, E.; Melichar, K.; Simecek, T.; Ruzicka, K.; Morávek, P.; Ruzicka, V.; Rushworth, S.A.,
Vapor pressure of germanium precursors,
Journal of Crystal Growth, 2008, 310, 23, 4720-4723, https://doi.org/10.1016/j.jcrysgro.2008.06.063
. [all data]
Grinberg, Chernaya, et al., 1988
Grinberg, E.E.; Chernaya, N.G.; Efremov, A.A.,
Vysokochist. Veshchestva, 1988, 180.. [all data]
Grinberg, Chernaya, et al., 1988, 2
Grinberg, E.E.; Chernaya, N.G.; Efremov, A.A.,
Physicochemical properties of some Group III-V element alcoholates,
Vysokochist. Veshchestva, 1988, 3, 180. [all data]
Balanevskaya, Rudnev, et al., 1977
Balanevskaya, T.S.; Rudnev, V.V.; Klishina, N.G.; Efremov, A.A.,
Tr. VNII Khim. Reakt. Osobo Chist. Khim. Veshehestv, 1977, 98. [all data]
Bradley, Kay, et al., 1958
Bradley, D.C.; Kay, L.J.; Swanwick, J.D.; Wardlaw, W.,
732. Germanium esters. Part II. Intermolecular forces and liquid structure,
J. Chem. Soc., 1958, 3656, https://doi.org/10.1039/jr9580003656
. [all data]
Johnson and Fritz, 1953
Johnson, Otto H.; Fritz, H.E.,
Tetraalkoxygermanes 1,
J. Am. Chem. Soc., 1953, 75, 3, 718-720, https://doi.org/10.1021/ja01099a061
. [all data]
Notes
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- Symbols used in this document:
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 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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