Home Symbol which looks like a small house Up Solid circle with an upward pointer in it

Pentaborane(11)


Gas phase ion energetics data

Go To: Top, Mass spectrum (electron ionization), NIST Free Links, 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
10.1PEUlman and Fehlner, 1978LLK
10.7PEUlman and Fehlner, 1978Vertical value; LLK

Appearance energy determinations

Ion AE (eV) Other Products MethodReferenceComment
B5H4+14.2 ± 0.43H2+HEIFehlner and Koski, 1964RDSH
B5H5+12.7 ± 0.23H2EIFehlner and Koski, 1964RDSH
B5H6+12.6 ± 0.32H2+HEIFehlner and Koski, 1964RDSH
B5H7+11.5 ± 0.22H2EIFehlner and Koski, 1964RDSH
B5H8+12.0 ± 0.3H2+HEIFehlner and Koski, 1964RDSH
B5H9+10.3H2EIFehlner and Koski, 1964RDSH
B5H10+11.8HEIFehlner and Koski, 1964RDSH

Mass spectrum (electron ionization)

Go To: Top, Gas phase ion energetics data, NIST Free Links, 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

Notice: This spectrum may be better viewed with a Javascript and HTML 5 enabled browser.

Mass spectrum
For Zoom
1.) Enter the desired X axis range (e.g., 100, 200)
2.) Check here for automatic Y scaling
3.) Press here to zoom

Additional Data

View image of digitized spectrum (can be printed in landscape orientation).

View spectrum image in SVG format.

Download spectrum in JCAMP-DX format.

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

All mass spectra in this site (plus many more) are available from the NIST/EPA/NIH Mass Spectral Library. Please see the following for information about the library and its accompanying search program.


References

Go To: Top, Gas phase ion energetics data, Mass spectrum (electron ionization), NIST Free Links, 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), NIST Free Links, References