Platinum dimer
- Formula: Pt2
- Molecular weight: 390.168
- CAS Registry Number: 12596-95-1
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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 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
Electron affinity determinations
| EA (eV) | Method | Reference | Comment |
|---|---|---|---|
| 1.8980 ± 0.0080 | LPES | Ho, Polak, et al., 1993 | B |
Ionization energy determinations
| IE (eV) | Method | Reference | Comment |
|---|---|---|---|
| 8.68 ± 0.02 | S | Taylor, Lemire, et al., 1988 | LL |
| 7.3 ± 2.0 | EI | Gupta, Nappi, et al., 1981 | 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 August, 1976
| 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| A | 218.4 1 | 0.9 | A ← X 1 | 11248.7 | ||||||||
| ↳missing citation | ||||||||||||
| X | 0 | |||||||||||
Notes
| 1 | In Ar matrix at 12 K; not observed in the gas phase. |
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.
Ho, Polak, et al., 1993
Ho, J.; Polak, M.L.; Ervin, K.M.; Lineberger, W.C.,
Photoelectron Spectroscopy of Nickel Group Dimers - Ni2(-), Pd2(-), and Pt2(-),
J. Chem. Phys., 1993, 99, 11, 8542, https://doi.org/10.1063/1.465577
. [all data]
Taylor, Lemire, et al., 1988
Taylor, S.; Lemire, G.W.; Hamrick, Y.M.; Fu, Z.; Morse, M.D.,
Resonant two-photon ionization spectroscopy of jet-cooled Pt2,
J. Chem. Phys., 1988, 89, 5517. [all data]
Gupta, Nappi, et al., 1981
Gupta, S.K.; Nappi, B.M.; Gingerich, K.A.,
Mass spectrometric study of the stabilities of the gaseous molecules Pt2 and PtY,
Inorg. Chem., 1981, 20, 966. [all data]
Notes
Go To: Top, Gas phase ion energetics data, Constants of diatomic molecules, References
- Symbols used in this document:
EA Electron affinity - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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