Pentaborane (9)-d9

Formula: B₅D₉
Molecular weight: 72.182
CAS Registry Number: 24034-84-2
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Gas phase ion energetics data

Data compiled by: Henry M. Rosenstock, Keith Draxl, Bruce W. Steiner, and John T. Herron

Ionization energy determinations

IE (eV)	Method	Reference
10.0	EI	Fehlner and Koski, 1964
9.77	EI	Kaufman, Koski, et al., 1963

Appearance energy determinations

Ion	AE (eV)	Other Products	Method	Reference
B₄D₄⁺	13.7 ± 0.2	?	EI	Fehlner and Koski, 1964
B₄D₆⁺	12.4 ± 0.2	BD₃?	EI	Fehlner and Koski, 1964
B₅D₅⁺	12.4 ± 0.4	2D₂	EI	Fehlner and Koski, 1964
B₅D₅⁺	12.92 ± 0.03	2D₂	EI	Kaufman, Koski, et al., 1963
B₅D₆⁺	12.4 ± 0.2	D₂+D	EI	Fehlner and Koski, 1964
B₅D₇⁺	11.2 ± 0.2	D₂	EI	Fehlner and Koski, 1964
B₅D₇⁺	10.9 ± 0.2	D₂	EI	Kaufman, Koski, et al., 1963

References

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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]

Kaufman, Koski, et al., 1963
Kaufman, J.J.; Koski, W.S.; Kuhns, L.J.; Wright, S.S., Appearance and ionization potentials of selected fragments from isotopically labeled pentaboranes, J. Am. Chem. Soc., 1963, 85, 1369. [all data]

Notes

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Symbols used in this document:

AE Appearance energy
Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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