Tetramethoxygermanium
- Formula: C4H12GeO4
- Molecular weight: 196.78
- IUPAC Standard InChI: InChI=1S/C4H12GeO4/c1-6-5(7-2,8-3)9-4/h1-4H3
- IUPAC Standard InChIKey: ACOVYJCRYLWRLR-UHFFFAOYSA-N
- CAS Registry Number: 992-91-6
- Chemical structure:
This structure is also available as a 2d Mol file - Other names: Tetramethoxygermane
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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 | -192.1 ± 0.65 | kcal/mol | Review | Martinho Simões | The enthalpy of formation has been derived on the basis of GeO2(am). |
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 by: José A. Martinho Simões
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔfH°liquid | -201.7 ± 0.65 | kcal/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 | -713.19 ± 0.41 | kcal/mol | CC-SB | Shaulov, Fedorov, et al., 1970 | 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° | 11.6 | kcal/mol | N/A | Pangrác, Fulem, et al., 2008 | Based on data from 264. to 303. K.; AC |
| ΔvapH° | 9.61 ± 0.1 | kcal/mol | CC-SB | Shaulov, Fedorov, et al., 1970 | MS |
Enthalpy of vaporization
| ΔvapH (kcal/mol) | Temperature (K) | Reference | Comment |
|---|---|---|---|
| 10.5 | 344. | Bradley, Kay, et al., 1958 | Based on data from 303. to 385. K.; AC |
Mass spectrum (electron ionization)
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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: NIST Mass Spectrometry Data Center, William E. Wallace, director
Spectrum
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Additional Data
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| 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 | G.Dube,Z.Chem.,9,316(1969) |
| NIST MS number | 280268 |
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, 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]
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]
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]
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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