Pentaborane(9),1-methyl-
- Formula: CH11B5
- Molecular weight: 77.153
- CAS Registry Number: 19495-55-7
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Phase change data
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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: William E. Acree, Jr., James S. Chickos
Enthalpy of vaporization
| ΔvapH (kJ/mol) | Temperature (K) | Reference | Comment |
|---|---|---|---|
| 32.7 | 295. | Ryschkewitsch, Harris, et al., 1963 | Based on data from 241. to 349. K. |
Gas phase ion energetics data
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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 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
View reactions leading to CH11B5+ (ion structure unspecified)
Ionization energy determinations
| IE (eV) | Method | Reference | Comment |
|---|---|---|---|
| 10.20 | PE | Ulman and Fehlner, 1976 | Vertical value; LLK |
Appearance energy determinations
| Ion | AE (eV) | Other Products | Method | Reference | Comment |
|---|---|---|---|---|---|
| B5H8+ | 10.45 ± 0.02 | CH3 | EI | Murphy and Enrione, 1971 | LLK |
| CH11B5+ | 9.80 ± 0.02 | ? | EI | Murphy and Enrione, 1970 | RDSH |
References
Go To: Top, Phase change data, Gas phase ion energetics data, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Ryschkewitsch, Harris, et al., 1963
Ryschkewitsch, G.E.; Harris, S.W.; Mezey, E.J.; Sisler, Harry H.; Weilmuenster, E.A.; Garrett, A.B.,
Alkylation of Pentaborane-9 Catalyzed by Lewis Acids,
Inorg. Chem., 1963, 2, 5, 890-893, https://doi.org/10.1021/ic50009a002
. [all data]
Ulman and Fehlner, 1976
Ulman, J.A.; Fehlner, T.P.,
Substituent effects in cluster species. Photoelectron spectra of 1-,2-, μ-substituted pentaborane(9),
J. Am. Chem. Soc., 1976, 98, 1119. [all data]
Murphy and Enrione, 1971
Murphy, C.B., Jr.; Enrione, R.E.,
Bond dissociation energies of the 1- and 2- isomers of pentaborane derivatives by electron impact by extended Huckel calculations,
Int. J. Mass Spectrom. Ion Phys., 1971, 7, 327. [all data]
Murphy and Enrione, 1970
Murphy, C.B., Jr.; Enrione, R.E.,
Ionization potentials of pentaborane(9) derivatives by electron impact and molecular orbital calculations,
Intern. J. Mass Spectrom. Ion Phys., 1970, 5, 157. [all data]
Notes
Go To: Top, Phase change data, Gas phase ion energetics data, References
- Symbols used in this document:
AE Appearance energy ΔvapH Enthalpy of vaporization - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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