Germane
- Formula: GeH4
- Molecular weight: 76.67
- IUPAC Standard InChI: InChI=1S/GeH4/h1H4
- IUPAC Standard InChIKey: QUZPNFFHZPRKJD-UHFFFAOYSA-N
- CAS Registry Number: 7782-65-2
- 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: germanium tetrahydride
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Reaction thermochemistry 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:
B - John E. Bartmess
MS - José A. Martinho Simões
Note: Please consider using the reaction search for this species. This page allows searching of all reactions involving this species. A general reaction search form is also available. Future versions of this site may rely on reaction search pages in place of the enumerated reaction displays seen below.
Individual Reactions
H3Ge- + =
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 358.7 ± 2.1 | kcal/mol | G+TS | Gal, Decouzon, et al., 2001 | gas phase; B |
| ΔrH° | 358.9 ± 1.3 | kcal/mol | G+TS | Decouzon, Gal, et al., 1993 | gas phase; The neutral acid ΔHf may be ca. 4 kcal/mol too positive: G2 calculations, Mayer, Gal, et al., 1997; B |
| ΔrH° | >356.0 ± 2.7 | kcal/mol | D-EA | Reed and Brauman, 1974 | gas phase; B |
| ΔrH° | 362.00 | kcal/mol | N/A | Check, Faust, et al., 2001 | gas phase; Fe(CO)-(q); ; ΔS(EA)=5.0; B |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔrG° | 350.6 ± 2.0 | kcal/mol | IMRE | Gal, Decouzon, et al., 2001 | gas phase; B |
| ΔrG° | 350.8 ± 1.2 | kcal/mol | IMRE | Decouzon, Gal, et al., 1993 | gas phase; The neutral acid ΔHf may be ca. 4 kcal/mol too positive: G2 calculations, Mayer, Gal, et al., 1997; B |
| ΔrG° | >347.9 ± 2.8 | kcal/mol | H-TS | Reed and Brauman, 1974 | gas phase; B |
| ΔrG° | 353.90 | kcal/mol | N/A | Check, Faust, et al., 2001 | gas phase; Fe(CO)-(q); ; ΔS(EA)=5.0; B |
(g) =
(g) +
(g)
By formula: H4Ge (g) = H (g) + H3Ge (g)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 83.4 ± 2.0 | kcal/mol | PIMS | Berkowitz, Ellison, et al., 1994 | Please also see Ruscic, Schwarz, et al., 1990. Value recommended in the critical survey Berkowitz, Ellison, et al., 1994.; MS |
| ΔrH° | <85.6 | kcal/mol | PIMS | Ruscic, Schwarz, et al., 1990 | Temperature: 0 K. A value of 82. ± 2. kcal/mol is recommended in Ruscic, Schwarz, et al., 1990.; MS |
(g) +
(g) =
(g) +
(g)
By formula: I (g) + H4Ge (g) = HI (g) + H3Ge (g)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 11.2 ± 0.98 | kcal/mol | KinG | Noble and Walsh, 1983 | MS |
References
Go To: Top, Reaction thermochemistry data, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Gal, Decouzon, et al., 2001
Gal, J.F.; Decouzon, M.; Maria, P.C.; Gonzalez, A.I.; Mo, O.; Yanez, M.; El Chaouch, S.; Guillemin, J.C.,
Acidity trends in alpha,beta-unsaturated alkanes, silanes, germanes, and stannanes,
J. Am. Chem. Soc., 2001, 123, 26, 6353-6359, https://doi.org/10.1021/ja004079j
. [all data]
Decouzon, Gal, et al., 1993
Decouzon, M.; Gal, J.F.; Gayraud, J.; Maria, P.C.; Vaglio, G.A.; Volpe, P.,
Fourier Transform-Ion Cyclotron Resonance Study of the Gas-Phase Acidities of Germane and Methylgermane - Bond Dissociation Energy of German,
J. Am. Soc. Mass Spectrom., 1993, 4, 1, 54, https://doi.org/10.1016/1044-0305(93)85042-V
. [all data]
Mayer, Gal, et al., 1997
Mayer, P.M.; Gal, J.-F.; Radom, L.,
The Heats of Formation, Gas-phase Acidities, and Related Thermochemical Properties of the Third-row Hydrides GeH4, AsH3, SeH2, and HBr from G2 ab initio Calculations,
Int. J. Mass Spectrom. Ion Proc., 1997, 167/168, 689, https://doi.org/10.1016/S0168-1176(97)00127-4
. [all data]
Reed and Brauman, 1974
Reed, K.J.; Brauman, J.I.,
Photodetachment of electrons from Group IVa binary hydride anions: The electron affinities of the SiH3 and GeH3 radicals,
J. Chem. Phys., 1974, 61, 4830. [all data]
Check, Faust, et al., 2001
Check, C.E.; Faust, T.O.; Bailey, J.M.; Wright, B.J.; Gilbert, T.M.; Sunderlin, L.S.,
Addition of Polarization and Diffuse Functions to the LANL2DZ Basis Set for P-Block Elements,
J. Phys. Chem. A,, 2001, 105, 34, 8111, https://doi.org/10.1021/jp011945l
. [all data]
Berkowitz, Ellison, et al., 1994
Berkowitz, J.; Ellison, G.B.; Gutman, D.,
Three methods to measure RH bond energies,
J. Phys. Chem., 1994, 98, 2744. [all data]
Ruscic, Schwarz, et al., 1990
Ruscic, B.; Schwarz, M.; Berkowitz, J.,
Photoionization studies of GeHn(n = 2-4),
J. Chem. Phys., 1990, 92, 1865. [all data]
Noble and Walsh, 1983
Noble, P.N.; Walsh, R.,
Kinetics of the gas phase reaction between iodine and monogermane and the bond dissociation energy D(H3Ge-H),
Int. J. Chem. Kinet., 1983, 15, 547. [all data]
Notes
Go To: Top, Reaction thermochemistry data, References
- Symbols used in this document:
ΔrG° Free energy of reaction at standard conditions ΔrH° Enthalpy of reaction at standard conditions - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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