Lead iodide
- Formula: IPb
- Molecular weight: 334.1
- CAS Registry Number: 13779-93-6
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Constants of diatomic molecules
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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 by: Klaus P. Huber and Gerhard H. Herzberg
Data collected through July, 1977
| 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| B (2Σ) | 33488.0 | 198.7 H | 0.35 1 | B ← X V | 33507.1 2 H | |||||||
| ↳missing citation | ||||||||||||
| A (1/2) | 20529.0 | 142.0 2 H | 1.50 | A ↔ X R | 20519.4 H | |||||||
| ↳missing citation | ||||||||||||
| X (2Π1/2) | 0 | 160.5 H | 0.25 | |||||||||
Notes
| 1 | Diffuse bands (prediss.) |
| 2 | Vibrational numbering uncertain. |
| 3 | See the discussion in Wieland and Newburgh, 1952. |
References
Go To: Top, 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.
Wieland and Newburgh, 1952
Wieland, K.; Newburgh, R.,
Uber einige neue Bandenspektren der Radikale PbCl, PbBr und PbJ,
Helv. Phys. Acta, 1952, 25, 87. [all data]
Notes
Go To: Top, Constants of diatomic molecules, References
- Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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