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:
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. - Permanent link for this species. Use this link for bookmarking this species for future reference.
- Information on this page:
- Other data available:
- Data at other public NIST sites:
- Options:
Gas phase ion energetics 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 as indicated in comments:
LL - Sharon G. Lias and Joel F. Liebman
B - John E. Bartmess
View reactions leading to H3Ge+ (ion structure unspecified)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔfH°(+) ion | ≤235. | kcal/mol | N/A | N/A |
Electron affinity determinations
| EA (eV) | Method | Reference | Comment |
|---|---|---|---|
| 1.61 ± 0.12 | D-EA | Decouzon, Gal, et al., 1993 | The neutral acid ΔHf may be ca. 4 kcal/mol too positive: G2 calculations, Mayer, Gal, et al., 1997; B |
| <1.739 ± 0.043 | LPD | Reed and Brauman, 1974 | B |
| 1.57668 | N/A | Check, Faust, et al., 2001 | Fe(CO)-(q); ; ΔS(EA)=5.0; B |
Ionization energy determinations
| IE (eV) | Method | Reference | Comment |
|---|---|---|---|
| ≤7.948 ± 0.005 | PI | Ruscic, Schwarz, et al., 1990 | LL |
Vibrational and/or electronic energy levels
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 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, Gas phase ion energetics 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.
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]
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]
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, Gas phase ion energetics data, Vibrational and/or electronic energy levels, References
- Symbols used in this document:
EA Electron affinity - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
- The National Institute of Standards and Technology (NIST) uses its best efforts to deliver a high quality copy of the Database and to verify that the data contained therein have been selected on the basis of sound scientific judgment. However, NIST makes no warranties to that effect, and NIST shall not be liable for any damage that may result from errors or omissions in the Database.
- Customer support for NIST Standard Reference Data products.