Germyl radical
- Formula: GeH3
- Molecular weight: 75.66
- IUPAC Standard InChI: InChI=1S/GeH3/h1H3
- IUPAC Standard InChIKey: WHYHZFHCWGGCOP-UHFFFAOYSA-N
- CAS Registry Number: 13765-45-2
- Chemical structure:
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Reaction thermochemistry data
Go To: Top, Vibrational and/or electronic energy levels, 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
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
(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. |
| 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. |
(g) =
(g) +
(g)
By formula: H3Ge (g) = H (g) + H2Ge (g)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | >56.4 | kcal/mol | PIMS | Ruscic, Schwarz, et al., 1990 | Temperature: 0 K. A value of 59.0 kcal/mol is recommended in Ruscic, Schwarz, et al., 1990. |
(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 |
Vibrational and/or electronic energy levels
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 by: Marilyn E. Jacox
State: 5p 2A2
| Energy (cm-1) |
Med. | Transition | λmin (nm) |
λmax (nm) |
References | ||
|---|---|---|---|---|---|---|---|
| To = 47705 ± 5 | gas | Johnson, Tsai, et al., 1988 | |||||
| Vib. sym. |
No. | Approximate type of mode |
cm-1 | Med. | Method | References | |
|---|---|---|---|---|---|---|---|
| a2 | 2 | OPLA | 756 ± 5 | gas | MPI | Johnson, Tsai, et al., 1988 | |
State: X
| Vib. sym. |
No. | Approximate type of mode |
cm-1 | Med. | Method | References | |
|---|---|---|---|---|---|---|---|
| a1 | 2 | Umbrella | 663 ± 10 | gas | MPI | Johnson, Tsai, et al., 1988 | |
| 2 | Umbrella | 667.8 | Ne | IR | Wang, Andrews, et al., 2002 | ||
| 2 | Umbrella | 667.0 | Ar | IR | Wang, Andrews, et al., 2002 | ||
| e | 3 | GeH3 stretch | 2050 | T | gas | DL | Quandt and Hershberger, 1995 |
| 3 | GeH3 stretch | 2089.4 | Ne | IR | Wang, Andrews, et al., 2002 | ||
| 3 | GeH3 stretch | 2074.1 | Ar | IR | Wang, Andrews, et al., 2002 | ||
| 3 | GeH3 stretch | 2093.3 | H2 | IR | Wang and Andrews, 2003 | ||
| 4 | Deformation | 857.2 | Ne | IR | Wang, Andrews, et al., 2002 | ||
| 4 | Deformation | 852.4 | Ar | IR | Wang, Andrews, et al., 2002 | ||
| 4 | Deformation | 853.5 | H2 | IR | Wang and Andrews, 2003 | ||
Additional references: Jacox, 1994, page 128
Notes
| T | Tentative assignment or approximate value |
| o | Energy separation between the v = 0 levels of the excited and electronic ground states. |
References
Go To: Top, Reaction thermochemistry data, Vibrational and/or electronic energy levels, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
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]
Johnson, Tsai, et al., 1988
Johnson, R.D., III; Tsai, B.P.; Hudgens, J.W.,
The electronic spectrum of the GeH3 radical,
J. Chem. Phys., 1988, 89, 8, 4558, https://doi.org/10.1063/1.454796
. [all data]
Wang, Andrews, et al., 2002
Wang, X.; Andrews, L.; Kushto, G.P.,
Infrared Spectra of the Novel Ge,
J. Phys. Chem. A, 2002, 106, 24, 5809, https://doi.org/10.1021/jp020219v
. [all data]
Quandt and Hershberger, 1995
Quandt, R.W.; Hershberger, J.F.,
Kinetics of GeH3 reactions with NO, NO2, and O2,
Chem. Phys. Lett., 1995, 233, 5-6, 559, https://doi.org/10.1016/0009-2614(94)01510-3
. [all data]
Wang and Andrews, 2003
Wang, X.; Andrews, L.,
Infrared Spectra of Group 14 Hydrides in Solid Hydrogen: Experimental Observation of PbH,
J. Am. Chem. Soc., 2003, 125, 21, 6581, https://doi.org/10.1021/ja029862l
. [all data]
Jacox, 1994
Jacox, M.E.,
Vibrational and electronic energy levels of polyatomic transient molecules, American Chemical Society, Washington, DC, 1994, 464. [all data]
Notes
Go To: Top, Reaction thermochemistry data, Vibrational and/or electronic energy levels, References
- Symbols used in this document:
ΔrH° Enthalpy of reaction at standard conditions - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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