Beryllium
- Formula: Be2
- Molecular weight: 18.024364
- IUPAC Standard InChI: InChI=1S/2Be
- IUPAC Standard InChIKey: SQOQGLGTQLQRCC-UHFFFAOYSA-N
- CAS Registry Number: 14452-60-9
- Chemical structure:
This structure is also available as a 2d Mol file or as a computed 3d SD file
The 3d structure may be viewed using Java or Javascript. - Permanent link for this species. Use this link for bookmarking this species for future reference.
- Information on this page:
- Other data available:
- Data at other public NIST sites:
- Options:
Constants of diatomic molecules
Go To: Top, 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 April, 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 (1Σu+) | 502 1 | 6.8 | A ← X | 28551 1 | ||||||||
| ↳Brom, Hewett, et al., 1975 | ||||||||||||
| 483 2 | 4.5 | A ← X | 27670 2 | |||||||||
| ↳Brom, Hewett, et al., 1975 | ||||||||||||
| X 1Σg+ | Theoretical calculations give no evidence for a bound ground state Bender and Davidson, 1967. | |||||||||||
Notes
| 1 | In Ne matrix at 4 K. |
| 2 | In Ar matrix at 4 K. |
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.
Brom, Hewett, et al., 1975
Brom, J.M., Jr.; Hewett, W.D., Jr.; Weltner, W., Jr.,
Optical spectra of Be atoms and Be2 molecules in rare gas matrices,
J. Chem. Phys., 1975, 62, 3122. [all data]
Bender and Davidson, 1967
Bender, C.F.; Davidson, E.R.,
Theoretical calculation of the potential curves of the Be2 molecule,
J. Chem. Phys., 1967, 47, 4972. [all data]
Notes
Go To: Top, Constants of diatomic molecules, References
- 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.