Silver dimer
- Formula: Ag2
- Molecular weight: 215.7364
- IUPAC Standard InChIKey: OGFYIDCVDSATDC-UHFFFAOYSA-N
- CAS Registry Number: 12187-06-3
- Chemical structure:
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Gas phase ion energetics data
Go To: Top, Constants of diatomic molecules, References, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Data evaluated as indicated in comments:
L - Sharon G. Lias
Data compiled as indicated in comments:
LL - Sharon G. Lias and Joel F. Liebman
LLK - Sharon G. Lias, Rhoda D. Levin, and Sherif A. Kafafi
B - John E. Bartmess
View reactions leading to Ag2+ (ion structure unspecified)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
IE (evaluated) | 7.6557 ± 0.0005 | eV | N/A | N/A | L |
Electron affinity determinations
EA (eV) | Method | Reference | Comment |
---|---|---|---|
1.100 ± 0.050 | LPES | Handschuh, Cha, et al., 1995 | Stated electron affinity is the Vertical Detachment Energy; B |
1.35 ± 0.20 | LPES | Taylor, Pettiettehall, et al., 1992 | EA set as 0.2 eV above onset to correct for unresolved hot bands.; B |
1.00 ± 0.20 | LPES | Ganteför, Gausa, et al., 1990 | B |
1.060 ± 0.020 | LPES | Ho, Ervin, et al., 1990 | Stated electron affinity is the Vertical Detachment Energy; B |
Ionization energy determinations
IE (eV) | Method | Reference | Comment |
---|---|---|---|
7.6557 | EVAL | Winstead, Paukstis, et al., 1995 | LL |
7.6557 ± 0.0005 | LS | Beutel, Kramer, et al., 1993 | LL |
7.60 | EI | Jackschath, Rabin, et al., 1992 | LL |
7.3 ± 0.1 | EI | Franzreb, Wucher, et al., 1990 | LL |
8.0 ± 1.0 | EI | Piacente and Gingerich, 1972 | LLK |
7.4 ± 0.8 | EI | Cocke and Gingerich, 1972 | LLK |
6.4 ± 0.7 | EI | Cocke and Gingerich, 1971 | LLK |
7.35 ± 0.05 | EI | Cabaud, Uzan, et al., 1971 | LLK |
Constants of diatomic molecules
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: Klaus P. Huber and Gerhard H. Herzberg
Data collected through October, 1974
Symbol | Meaning |
---|---|
State | electronic state and / or symmetry symbol |
Te | minimum electronic energy (cm-1) |
ωe | vibrational constant – first term (cm-1) |
ωexe | vibrational constant – second term (cm-1) |
ωeye | vibrational constant – third term (cm-1) |
Be | rotational constant in equilibrium position (cm-1) |
αe | rotational constant – first term (cm-1) |
γe | rotation-vibration interaction constant (cm-1) |
De | centrifugal distortion constant (cm-1) |
βe | rotational constant – first term, centrifugal force (cm-1) |
re | internuclear distance (Å) |
Trans. | observed transition(s) corresponding to electronic state |
ν00 | position of 0-0 band (units noted in table) |
State | Te | ωe | ωexe | ωeye | Be | αe | γe | De | βe | re | Trans. | ν00 |
---|---|---|---|---|---|---|---|---|---|---|---|---|
E | 40159.1 | 146.08 H | 1.54 | E ← X R | 40135.7 H | |||||||
↳Ruamps, 1959; Maheshwari, 1963; Shin-Piaw, Loong-Seng, et al., 1966 | ||||||||||||
D 1Πu (1u) | 39023.7 | 166.7 HR | 1.134 | D ← X R | 39010.7 HR | |||||||
↳Ruamps, 1959; Shin-Piaw, Loong-Seng, et al., 1966 | ||||||||||||
C 1Πu (1u) | 37626.9 | 172.9 HQ | 1.07 | C ← X R | 37617 HQ | |||||||
↳Ruamps, 1959; Maheshwari, 1963; Shin-Piaw, Loong-Seng, et al., 1966 | ||||||||||||
B | 35827.3 | 151.3 H | 0.7 | B ← X R | 35806.7 H | |||||||
↳Ruamps, 1959; Shin-Piaw, Loong-Seng, et al., 1966 | ||||||||||||
State | Te | ωe | ωexe | ωeye | Be | αe | γe | De | βe | re | Trans. | ν00 |
A | 22996.4 | 154.6 H | 0.587 | 0.0023 | A ← X R | 22977.5 H | ||||||
↳Ruamps, 1954; missing citation; Ruamps, 1959 | ||||||||||||
X 1Σg+ | 0 | 192.4 H | 0.643 | 0.0003 |
Notes
1 | Thermochemical value (mass-spectrom.) Drowart and Honig, 1956, Schissel, 1957, Ackerman, Stafford, et al., 1960; recalculated Smoes, Mandy, et al., 1972. |
2 | Q head at 38995.6 cm-1. |
3 | R head at 37628.2 cm-1 |
4 | Constants for 107Ag109Ag; ωeye(A) +0.0023, ωeye(X) +0.0003. |
References
Go To: Top, Gas phase ion energetics data, Constants of diatomic molecules, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Handschuh, Cha, et al., 1995
Handschuh, H.; Cha, C.Y.; Bechthold, P.S.; Gantefor, G.; Eberhardt, W.,
Electronic shells or molecular orbitals: Photoelectron spectra of Ag-n(-) clusters,
J. Chem. Phys., 1995, 102, 16, 6406, https://doi.org/10.1063/1.469356
. [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]
Ganteför, Gausa, et al., 1990
Ganteför, G.; Gausa, M.; Meiwes-Broer, K.-H.; Lutz, H.O.,
Photoelectron Spectroscopy of Silver and Palladium Cluster Anions,
J. Chem. Soc. Farad. Trans., 1990, 86, 13, 2483, https://doi.org/10.1039/ft9908602483
. [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]
Winstead, Paukstis, et al., 1995
Winstead, C.B.; Paukstis, S.J.; Gole, J.L.,
What is the ionization potential of silicon dimer?,
Chem. Phys. Lett., 1995, 237, 81. [all data]
Beutel, Kramer, et al., 1993
Beutel, V.; Kramer, H.-G.; Bhale, G.L.; Kuhn, M.; Weyers, K.; Demtroder, W.,
High-resolution isotope selective laser spectroscopy of Ag2 molecules,
J. Chem. Phys., 1993, 98, 2699. [all data]
Jackschath, Rabin, et al., 1992
Jackschath, C.; Rabin, I.; Schulze, W.,
Electron impact ionization of silver clusters Agn, n<36,
Z. Phys. D, 1992, 22, 517. [all data]
Franzreb, Wucher, et al., 1990
Franzreb, K.; Wucher, A.; Oechsner, H.,
Electron impact ionization of small silver and copper clusters,
Z. Phys. D, 1990, 17, 51. [all data]
Piacente and Gingerich, 1972
Piacente, V.; Gingerich, K.A.,
Thermodynamic study of the molecule NaAg with a mass spectrometer,
High Temp. Sci., 1972, 4, 312. [all data]
Cocke and Gingerich, 1972
Cocke, D.L.; Gingerich, K.A.,
Mass spectrometric determination of the bond dissociation energies of the molecules CePd and CeC2,
J. Phys. Chem., 1972, 76, 2332. [all data]
Cocke and Gingerich, 1971
Cocke, D.L.; Gingerich, K.A.,
Mass spectrometric determination of the dissociation energies of the molecules Ho2, HoAg, and HoAu,
J. Phys. Chem., 1971, 75, 3264. [all data]
Cabaud, Uzan, et al., 1971
Cabaud, B.; Uzan, R.; Nounou, P.,
Etude des processus d'ionisation a haute temperature des vapeurs metalliques par couplage d'une cellule de Knudsen et d'une source Fox. I. Interpretation des processus d'ionisation de Ag et influence de la temperature sur les courbes d'efficacite d'ionisation,.,
Int. J. Mass Spectrom. Ion Phys., 1971, 6, 89. [all data]
Ruamps, 1959
Ruamps, P.J.,
Production et etude du spectre optique de molecules diatomiques de metaux et contribution au calcul theorique des intensites,
Ann. Phys. (Paris), 1959, 4, 1111. [all data]
Maheshwari, 1963
Maheshwari, R.C.,
New band systems of Ag2 molecule in the far ultra-violet region,
Indian J. Phys., 1963, 37, 368. [all data]
Shin-Piaw, Loong-Seng, et al., 1966
Shin-Piaw, C.; Loong-Seng, W.; Yoke-Seng, L.,
Emission band systems of Ag2 produced in discharge,
Nature (London), 1966, 209, 1300. [all data]
Ruamps, 1954
Ruamps, J.,
Spectre d'emission des molecules Cu2, Ag2, et Au2,
Compt. Rend., 1954, 238, 1489. [all data]
Drowart and Honig, 1956
Drowart, J.; Honig, R.E.,
Mass spectrometric study of copper, silver, and gold,
J. Chem. Phys., 1956, 25, 581. [all data]
Schissel, 1957
Schissel, P.,
Dissociation energies of Cu2, Ag2, and Au2,
J. Chem. Phys., 1957, 26, 1276. [all data]
Ackerman, Stafford, et al., 1960
Ackerman, M.; Stafford, F.E.; Drowart, J.,
Mass spectrometric determination of the dissociation energies of the molecules AgAu, AgCu, and AuCu,
J. Chem. Phys., 1960, 33, 1784. [all data]
Smoes, Mandy, et al., 1972
Smoes, S.; Mandy, F.; Vander Auwera-Mahieu, A.; Drowart, J.,
Determination by the mass spectrometric Knudsen cell method of the dissociation energies of the group IB chalcogenides,
Bull. Soc. Chim. Belg., 1972, 81, 45. [all data]
Notes
Go To: Top, Gas phase ion energetics data, Constants of diatomic molecules, References
- Symbols used in this document:
EA Electron affinity IE (evaluated) Recommended ionization energy - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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