Trimethylgermane
- Formula: C3H10Ge
- Molecular weight: 118.75
- CAS Registry Number: 1449-63-4
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Reaction thermochemistry data
Go To: Top, Gas phase ion energetics 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 as indicated in comments:
B - John E. Bartmess
MS - José A. Martinho Simões
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Individual Reactions
C3H9Ge- + = C3H10Ge
By formula: C3H9Ge- + H+ = C3H10Ge
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 368.7 ± 2.1 | kcal/mol | D-EA | Brinkman, Salomon, et al., 1995 | gas phase; D-EA cycle implies BDE(Me3Ge-H) = 80.2; B |
| ΔrH° | 361.9 ± 3.1 | kcal/mol | G+TS | Brinkman, Salomon, et al., 1995 | gas phase; Acidity between mF- and oF-aniline.; B |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔrG° | 361.4 ± 2.2 | kcal/mol | H-TS | Brinkman, Salomon, et al., 1995 | gas phase; D-EA cycle implies BDE(Me3Ge-H) = 80.2; B |
| ΔrG° | 354.6 ± 3.0 | kcal/mol | IMRB | Brinkman, Salomon, et al., 1995 | gas phase; Acidity between mF- and oF-aniline.; B |
C3H10Ge (g) = C3H9Ge (g) + (g)
By formula: C3H10Ge (g) = C3H9Ge (g) + H (g)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 79.8 ± 2.9 | kcal/mol | ICR | Brinkman, Salomon, et al., 1995 | The reaction enthalpy was derived from the acidity of Ge(Me)3(H)(g), 361.5 ± 2.8 kcal/mol, the electron affinity of Ge(Me)3(g), 31.91 ± 0.69 kcal/mol Brinkman, Salomon, et al., 1995, and the ionization energy of H(g), 313.58 kcal/mol Lias, Bartmess, et al., 1988.; MS |
(g) + C3H10Ge (g) = C3H9Ge (g) +
(g)
By formula: I (g) + C3H10Ge (g) = C3H9Ge (g) + HI (g)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 10.0 ± 0.43 | kcal/mol | KinG | Doncaster and Walsh, 1979 | MS |
Gas phase ion energetics data
Go To: Top, Reaction thermochemistry 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 as indicated in comments:
B - John E. Bartmess
LLK - Sharon G. Lias, Rhoda D. Levin, and Sherif A. Kafafi
Ionization energy determinations
| IE (eV) | Method | Reference | Comment |
|---|---|---|---|
| ~10.0 | PE | Drake, Glavincevski, et al., 1979 | LLK |
| 10.93 | PE | Drake, Glavincevski, et al., 1979 | Vertical value; LLK |
De-protonation reactions
C3H9Ge- + = C3H10Ge
By formula: C3H9Ge- + H+ = C3H10Ge
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 368.7 ± 2.1 | kcal/mol | D-EA | Brinkman, Salomon, et al., 1995 | gas phase; D-EA cycle implies BDE(Me3Ge-H) = 80.2; B |
| ΔrH° | 361.9 ± 3.1 | kcal/mol | G+TS | Brinkman, Salomon, et al., 1995 | gas phase; Acidity between mF- and oF-aniline.; B |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔrG° | 361.4 ± 2.2 | kcal/mol | H-TS | Brinkman, Salomon, et al., 1995 | gas phase; D-EA cycle implies BDE(Me3Ge-H) = 80.2; B |
| ΔrG° | 354.6 ± 3.0 | kcal/mol | IMRB | Brinkman, Salomon, et al., 1995 | gas phase; Acidity between mF- and oF-aniline.; B |
References
Go To: Top, Reaction 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.
Brinkman, Salomon, et al., 1995
Brinkman, E.A.; Salomon, K.; Tumas, W.; Brauman, J.I.,
Electron affinities and gas-phase acidities of organogermanium and organotin compounds,
J. Am. Chem. Soc., 1995, 117, 17, 4905, https://doi.org/10.1021/ja00122a022
. [all data]
Lias, Bartmess, et al., 1988
Lias, S.G.; Bartmess, J.E.; Liebman, J.F.; Holmes, J.L.; Levin, R.D.; Mallard, W.G.,
Gas-Phase Ion and Neutral Thermochemistry, J. Phys. Chem. Ref. Data, 1988, 17, Suppl. 1. [all data]
Doncaster and Walsh, 1979
Doncaster, A.M.; Walsh, R.,
J. Phys. Chem., 1979, 83, 578. [all data]
Drake, Glavincevski, et al., 1979
Drake, J.E.; Glavincevski, B.M.; Gorzelska, K.,
The photoelectron spectra of trimethylgermane, chloro- and fluoro-trimethylgermane,
J. Electron Spectrosc. Relat. Phenom., 1979, 16, 331. [all data]
Notes
Go To: Top, Reaction thermochemistry data, Gas phase ion energetics 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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