boron

Formula: B
Molecular weight: 10.811
IUPAC Standard InChI: InChI=1S/B
IUPAC Standard InChIKey: ZOXJGFHDIHLPTG-UHFFFAOYSA-N
CAS Registry Number: 7440-42-8
Chemical structure:
This structure is also available as a 2d Mol file
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Gas phase ion energetics data

Data evaluated as indicated in comments:
L - Sharon G. Lias

Data compiled as indicated in comments:
LL - Sharon G. Lias and Joel F. Liebman
LBLHLM - Sharon G. Lias, John E. Bartmess, Joel F. Liebman, John L. Holmes, Rhoda D. Levin, and W. Gary Mallard
LLK - Sharon G. Lias, Rhoda D. Levin, and Sherif A. Kafafi
RDSH - Henry M. Rosenstock, Keith Draxl, Bruce W. Steiner, and John T. Herron
B - John E. Bartmess

View reactions leading to B⁺ (ion structure unspecified)

Quantity	Value	Units	Method	Reference	Comment
IE (evaluated)	8.29803 ± 0.00002	eV	N/A	N/A	L

Electron affinity determinations

EA (eV)	Method	Reference	Comment
0.279743 ± 0.000044	LPD	Scheer, Bilodeau, et al., 1998	tunable IR laser; B
0.278 ± 0.010	LPES	Feigerle, Corderman, et al., 1981	B
<0.500002	PD	Feldmann, Rackwitz, et al., 1977	B

Ionization energy determinations

IE (eV)	Method	Reference	Comment
8.29803	EVAL	Lide, 1992	LL
8.298	S	Kelly, 1987	LBLHLM
8.0	EI	Murad and Hildenbrand, 1975	LLK
8.29802 ± 0.00002	S	Brown, Tilford, et al., 1974	LLK
8.6 ± 0.4	EI	Gingerich, 1971	LLK
8.298	S	Moore, 1970	RDSH

References

Go To: Top, Gas phase ion energetics data, Notes

Scheer, Bilodeau, et al., 1998
Scheer, M.; Bilodeau, R.C.; Haugen, H.K., Negative ion of boron: An experimental study of the P-3 ground state, Phys. Rev. Lett., 1998, 80, 12, 2562-2565, https://doi.org/10.1103/PhysRevLett.80.2562 . [all data]

Feigerle, Corderman, et al., 1981
Feigerle, C.S.; Corderman, R.R.; Lineberger, W.C., Electron affinities of B, Al, Bi, and Pb, J. Chem. Phys., 1981, 74, 2, 1513, https://doi.org/10.1063/1.441174 . [all data]

Feldmann, Rackwitz, et al., 1977
Feldmann, D.; Rackwitz, R.; Heincke, H.; Kaiser, H.J., Photoabsolung von Elektronen der Ionen B-, Ga-, In-, Tl-, Ge-, und Pb-, Z. Naturforschung A, 1977, 32, 302. [all data]

Lide, 1992
Lide, D.R. (Editor), Ionization potentials of atoms and atomic ions in Handbook of Chem. and Phys., 1992, 10-211. [all data]

Kelly, 1987
Kelly, R.L., Atomic and ionic spectrum lines of hydrogen through kryton, J. Phys. Chem. Ref. Data, 1987, 16. [all data]

Murad and Hildenbrand, 1975
Murad, E.; Hildenbrand, D.L., Thermochemical properties of gaseous ZrO and ZrO₂, J. Chem. Phys., 1975, 63, 1133. [all data]

Brown, Tilford, et al., 1974
Brown, C.M.; Tilford, S.G.; Ginter, M.L., Absorption spectrum of B I in the 1350-1900-A region, J. Opt. Soc. Am., 1974, 64, 877. [all data]

Gingerich, 1971
Gingerich, K.A., Gaseous metal borides. III. The dissociation energy and heat of formation of gold monoboride, J. Chem. Phys., 1971, 54, 2646. [all data]

Moore, 1970
Moore, C.E., Ionization potentials and ionization limits derived from the analyses of optical spectra, Natl. Stand. Ref. Data Ser., (U.S. Natl. Bur. Stand.), 1970, 34, 1. [all data]

Notes

Go To: Top, Gas phase ion energetics data, References

Symbols used in this document:

EA Electron affinity

IE (evaluated) Recommended ionization energy
Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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EA	Electron affinity
IE (evaluated)	Recommended ionization energy