Diborane (10B2H6)
- Formula: 10B2H6
- Molecular weight: 26.07351
- Information on this page:
- Options:
Vibrational and/or electronic energy levels
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: Takehiko Shimanouchi
Symmetry: D2h Symmetry Number σ = 4
| Sym. | No | Approximate | Selected Freq. | Infrared | Raman | Comments | ||||
|---|---|---|---|---|---|---|---|---|---|---|
| Species | type of mode | Value | Rating | Value | Phase | Value | Phase | |||
| ag | 1 | BH2 s-str | 2537 | C | ia | 2537 VS | gas | |||
| ag | 2 | Ring str | 2110 | C | ia | 2110 S | gas | |||
| ag | 3 | BH2 scis | 1186 | C | ia | 1186 M | gas | |||
| ag | 4 | Ring deform | 816 | C | ia | 816 S | gas | |||
| au | 5 | BH2 twist | 833 | C | 833.1 ia VW | gas | ia | Observed very weakly & confirmed by combination bands | ||
| b1g | 6 | Ring str | 1768 | C | ia | 1768 W | gas | |||
| b1g | 7 | BH2 wag | 850 | E | ia | OC(ν7+ν10) | ||||
| b1u | 8 | BH2 a-str | 2625 | C | 2625 VS | gas | ia | |||
| b1u | 9 | BH2 rock | 955 | E | ia | CF | ||||
| b1u | 10 | Ring puck | 368 | C | 368 S | gas | ia | |||
| b2g | 11 | BH2 a-str | 2640 | E | ia | 2640 W b | gas | |||
| b2g | 12 | BH2 rock | 930 | E | ia | OC(ν10+ν12) | ||||
| b2u | 13 | Ring str | 1920 | E | 1882 M | gas | ia | FR(ν9+ν15) | ||
| b2u | 13 | Ring str | 1920 | E | 1992 W | gas | ia | FR(ν9+ν15) | ||
| b2u | 14 | BH2 wag | 977 | C | 977 S | gas | ia | |||
| b3g | 15 | BH2 twist | 1012 | E | ia | CF()Estimated from ν15 of ν11B2H6 | ||||
| b3u | 16 | BH2 s-str | 2528 | C | 2528 VS | gas | ia | |||
| b3u | 17 | Ring deform | 1606 | C | 1606 VS | gas | ia | |||
| b3u | 18 | BH2 scis | 1181 | C | 1181 VS | gas | ia | |||
Source: Shimanouchi, 1972
Notes
| VS | Very strong |
| S | Strong |
| M | Medium |
| W | Weak |
| VW | Very weak |
| ia | Inactive |
| b | Broad |
| FR | Fermi resonance with an overtone or a combination tone indicated in the parentheses. |
| OC | Frequency estimated from an overtone or a combination tone indicated in the parentheses. |
| CF | Calculated frequency |
| C | 3~6 cm-1 uncertainty |
| E | 15~30 cm-1 uncertainty |
References
Go To: Top, Vibrational and/or electronic energy levels, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Shimanouchi, 1972
Shimanouchi, T.,
Tables of Molecular Vibrational Frequencies Consolidated Volume I, National Bureau of Standards, 1972, 1-160. [all data]
Notes
Go To: Top, Vibrational and/or electronic energy levels, 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.