Tetragermanium
- Formula: Ge4
- Molecular weight: 290.56
- CAS Registry Number: 12184-87-1
- Information on this page:
- 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:
RDSH - Henry M. Rosenstock, Keith Draxl, Bruce W. Steiner, and John T. Herron
B - John E. Bartmess
Electron affinity determinations
EA (eV) | Method | Reference | Comment |
---|---|---|---|
1.810 ± 0.090 | LPES | Neigishi, Kawamata, et al., 1997 | B |
1.940 ± 0.050 | LPES | Burton, Xu, et al., 1996 | B |
1.90 ± 0.20 | LPES | Cheshnovsky, Yang, et al., 1987 | EA given is Vertical Detachment Energy. Adiabatic EA est as up to 1 eV smaller; B |
Ionization energy determinations
IE (eV) | Method | Reference | Comment |
---|---|---|---|
8.0 ± 0.5 | EI | Kant and Strauss, 1966 | RDSH |
8.4 ± 0.3 | EI | Drowart, DeMaria, et al., 1959 | RDSH |
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: a
Energy (cm-1) |
Med. | Transition | λmin (nm) |
λmax (nm) |
References | ||
---|---|---|---|---|---|---|---|
To = 6000 | T | gas | Burton, Xu, et al., 1996 | ||||
Vib. sym. |
No. | Approximate type of mode |
cm-1 | Med. | Method | References | |
---|---|---|---|---|---|---|---|
a1 | Breathing | 173 | T | gas | TPE | Burton, Xu, et al., 1996 | |
Additional references: Jacox, 1998, page 246
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.
Neigishi, Kawamata, et al., 1997
Neigishi, Y.; Kawamata, H.; Hayase, T.; Gomei, M.; Kishi, R.; Hayakawa, F.; Nakajima, A.; Kaya, K.,
Photoelectron Spectroscopy of Germanium-Fluorine Binary Cluster Anions: the HOMO-LUMO Gap Estimation of Gen Clusters.,
Chem. Phys. Lett., 1997, 269, 3-4, 199-207, https://doi.org/10.1016/S0009-2614(97)00284-4
. [all data]
Burton, Xu, et al., 1996
Burton, G.R.; Xu, C.; Arnold, C.C.; Neumark, D.M.,
Photoelectron Spectroscopy and Zero Kinetic Energy Spectroscopy of Germanium Cluster Anions,
J. Chem. Phys., 1996, 104, 8, 2757, https://doi.org/10.1063/1.471098
. [all data]
Cheshnovsky, Yang, et al., 1987
Cheshnovsky, O.; Yang, S.H.; Pettiette, C.L.; Craycraft, M.J.; Liu, Y.; Smalley, R.E.,
Ultraviolet Photoelectron Spectroscopy of Semiconductor Clusters: Silicon and Germanium,
Chem. Phys. Lett., 1987, 138, 2-3, 119, https://doi.org/10.1016/0009-2614(87)80353-6
. [all data]
Kant and Strauss, 1966
Kant, A.; Strauss, B.H.,
Atomization energies of the polymers of germanium, Ge2 to Ge7,
J. Chem. Phys., 1966, 45, 882. [all data]
Drowart, DeMaria, et al., 1959
Drowart, J.; DeMaria, G.; Boerboom, A.J.H.; Inghram, M.G.,
Mass spectrometric study of intergroup IVB molecules,
J. Chem. Phys., 1959, 30, 308. [all data]
Jacox, 1998
Jacox, M.E.,
Vibrational and electronic energy levels of polyatomic transient molecules: supplement A,
J. Phys. Chem. Ref. Data, 1998, 27, 2, 115-393, https://doi.org/10.1063/1.556017
. [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.