Gold dimer
- Formula: Au2
- Molecular weight: 393.933138
- CAS Registry Number: 12187-09-6
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Gas phase ion energetics data
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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:
LLK - Sharon G. Lias, Rhoda D. Levin, and Sherif A. Kafafi
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 |
|---|---|---|---|
| 1.93930 ± 0.00060 | N/A | Leon, Yang, et al., 2013 | see also Leon, Yang, et al., 20132; B |
| 1.940 ± 0.035 | N/A | Zheng, Li, et al., 2007 | B |
| 1.940 ± 0.020 | LPES | Zhai, Kiran, et al., 2004 | Vertical Detachment Energy: 2.01±0.02 eV; B |
| 1.951 ± 0.050 | LPES | Taylor, Pettiettehall, et al., 1992 | EA set as 0.2 eV above onset to correct for unresolved hot bands.; B |
| 1.93998 ± 0.00052 | LPD | Gantefor, Cox, et al., 1990 | B |
| 2.010 ± 0.010 | LPES | Ho, Ervin, et al., 1990 | Stated electron affinity is the Vertical Detachment Energy; B |
Ionization energy determinations
| IE (eV) | Method | Reference | Comment |
|---|---|---|---|
| 8.7 ± 1.0 | EI | Gupta and Gingerich, 1979 | LLK |
| 9.5 ± 0.3 | EI | Stearns and Kohl, 1973 | LLK |
| 9.5 ± 0.3 | EI | Stearns and Kohl, 1973, 2 | LLK |
| 9.7 ± 0.4 | EI | Gingerich, 1971 | LLK |
| 9.7 ± 0.3 | EI | Gingerich and Finkbeiner, 1970 | RDSH |
| 9.2 ± 0.4 | EI | Gingerich, 1969 | RDSH |
References
Go To: Top, Gas phase ion energetics data, NIST Free Links, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Leon, Yang, et al., 2013
Leon, I.; Yang, Z.; Wang, L.S.,
High resolution photoelectron imaging of Au-2(-),
J. Chem. Phys., 2013, 138, 18, 184304, https://doi.org/10.1063/1.4803477
. [all data]
Zheng, Li, et al., 2007
Zheng, W.; Li, X.; Eustis, S.; Grubisic, A.; Thomas, O.; de Clercq, H.; Bowen, K.,
Anion photoelectron spectroscopy of Au-(H2O)(1,2), Au-2(-)(D2O)(1-4), and AuOH-,
Chem. Phys. Lett., 2007, 444, 4-6, 232-236, https://doi.org/10.1016/j.cplett.2007.07.036
. [all data]
Zhai, Kiran, et al., 2004
Zhai, H.-J.; Kiran, B.; Wang, L.-S.,
Observation of Au2H- impurity in pure gold clusters and Implications for the Anomalous Au-Au Distance in Gold Nanowires,
J. Chem. Phys., 2004, 121, 17, 8231, https://doi.org/10.1063/1.1802491
. [all data]
Taylor, Pettiettehall, et al., 1992
Taylor, K.J.; Pettiettehall, C.L.; Cheshnovsky, O.; Smalley, R.E.,
Ultraviolet Photoelectron Spectra of Coinage Metal Clusters,
J. Chem. Phys., 1992, 96, 4, 3319, https://doi.org/10.1063/1.461927
. [all data]
Gantefor, Cox, et al., 1990
Gantefor, G.F.; Cox, D.M.; Kaldor, A.,
High Resolution Photodetachment Spectroscopy of Jet-Cooled Metal Cluster Anions - Au2- and Ag3-,
J. Chem. Phys., 1990, 93, 11, 8395, https://doi.org/10.1063/1.459272
. [all data]
Ho, Ervin, et al., 1990
Ho, J.; Ervin, K.M.; Lineberger, W.C.,
Photoelectron Spectroscopy of Metal Cluster Anions - Cun-, Agn-, and Aun-,
J. Chem. Phys., 1990, 93, 10, 6987, https://doi.org/10.1063/1.459475
. [all data]
Gupta and Gingerich, 1979
Gupta, S.K.; Gingerich, K.A.,
Knudsen effusion mass spectrometric determination of the dissociation energy of diniobium, Nb2(g), and the heat of sublimation of solid niobium,
J. Chem. Phys., 1979, 70, 5350. [all data]
Stearns and Kohl, 1973
Stearns, C.A.; Kohl, F.J.,
Mass spectrometric determination of the dissociation energies of AlC2, Al2C2, and AlAuC2,
J. Phys. Chem., 1973, 77, 136. [all data]
Stearns and Kohl, 1973, 2
Stearns, C.A.; Kohl, F.J.,
Mass spectrometric determination of the dissociation energies of gaseous Al2, AlSi, and AlSiO,
High Temp. Sci., 1973, 5, 113. [all data]
Gingerich, 1971
Gingerich, K.A.,
Gaseous metal borides. III. The dissociation energy and heat of formation of gold monoboride,
J. Chem. Phys., 1971, 54, 2646. [all data]
Gingerich and Finkbeiner, 1970
Gingerich, K.A.; Finkbeiner, H.C.,
Mass spectrometric determination of the dissociation energies of LaAu, CeAu, PrAu, and NdAu and predicted stability of gaseous monoaurides of electropositive metals,
J. Chem. Phys., 1970, 52, 2956. [all data]
Gingerich, 1969
Gingerich, K.A.,
Gaseous metal silicides. I. Dissociation energy of the molecule AuSi,
J. Chem. Phys., 1969, 50, 5426. [all data]
Notes
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- Symbols used in this document:
EA Electron affinity - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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