Pentaborane(11)
- Formula: B5H11
- Molecular weight: 65.142
- IUPAC Standard InChI: InChI=1S/B5H11/c6-1-3-2-5(3,7-2)4(1,3,6)8-5/h4-5H,1-3H2
- IUPAC Standard InChIKey: LVRADNQEQFFNNW-UHFFFAOYSA-N
- CAS Registry Number: 18433-84-6
- Chemical structure:
This structure is also available as a 2d Mol file - Other names: Boron hydride (B5H11)
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Gas phase ion energetics data
Go To: Top, Mass spectrum (electron ionization), 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:
LLK - Sharon G. Lias, Rhoda D. Levin, and Sherif A. Kafafi
RDSH - Henry M. Rosenstock, Keith Draxl, Bruce W. Steiner, and John T. Herron
Ionization energy determinations
| IE (eV) | Method | Reference | Comment |
|---|---|---|---|
| 10.1 | PE | Ulman and Fehlner, 1978 | LLK |
| 10.7 | PE | Ulman and Fehlner, 1978 | Vertical value; LLK |
Appearance energy determinations
| Ion | AE (eV) | Other Products | Method | Reference | Comment |
|---|---|---|---|---|---|
| B5H4+ | 14.2 ± 0.4 | 3H2+H | EI | Fehlner and Koski, 1964 | RDSH |
| B5H5+ | 12.7 ± 0.2 | 3H2 | EI | Fehlner and Koski, 1964 | RDSH |
| B5H6+ | 12.6 ± 0.3 | 2H2+H | EI | Fehlner and Koski, 1964 | RDSH |
| B5H7+ | 11.5 ± 0.2 | 2H2 | EI | Fehlner and Koski, 1964 | RDSH |
| B5H8+ | 12.0 ± 0.3 | H2+H | EI | Fehlner and Koski, 1964 | RDSH |
| B5H9+ | 10.3 | H2 | EI | Fehlner and Koski, 1964 | RDSH |
| B5H10+ | 11.8 | H | EI | Fehlner and Koski, 1964 | RDSH |
Mass spectrum (electron ionization)
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: NIST Mass Spectrometry Data Center, William E. Wallace, director
Spectrum
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Additional Data
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| Owner | NIST Mass Spectrometry Data Center Collection (C) 2014 copyright by the U.S. Secretary of Commerce on behalf of the United States of America. All rights reserved. |
|---|---|
| Origin | CCC 0006 |
| NIST MS number | 199 |
References
Go To: Top, Gas phase ion energetics data, Mass spectrum (electron ionization), Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Ulman and Fehlner, 1978
Ulman, J.A.; Fehlner, T.P.,
Ultraviolet photoelectron spectroscopy of boranes and carboranes. Five-, six-, and seven- atom frameworks,
J. Am. Chem. Soc., 1978, 100, 449. [all data]
Fehlner and Koski, 1964
Fehlner, T.P.; Koski, W.S.,
The fragmentation of some boron hydrides by electron impact,
J. Am. Chem. Soc., 1964, 86, 581. [all data]
Notes
Go To: Top, Gas phase ion energetics data, Mass spectrum (electron ionization), References
- Symbols used in this document:
AE Appearance energy - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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