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Borane, trimethyl-

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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:
B - John E. Bartmess
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
10.4PIHolliday, Reade, et al., 1971LLK
8.8 ± 0.2EILaw and Margrave, 1956RDSH
10.69PEBerger, Kroner, et al., 1976Vertical value; LLK
10.68PEBarker, Lappert, et al., 1975Vertical value; LLK
10.69PEFuss and Bock, 1974Vertical value; LLK

Appearance energy determinations

Ion AE (eV) Other Products MethodReferenceComment
B+23.1 ± 0.3?EILaw and Margrave, 1956RDSH
CH3+15.1 ± 0.3?EILaw and Margrave, 1956RDSH
CH3B+17.0 ± 0.5?EILaw and Margrave, 1956RDSH
C2H6B+10.3 ± 0.2CH3EILaw and Margrave, 1956RDSH

De-protonation reactions

C3H8B- + Hydrogen cation = Borane, trimethyl-

By formula: C3H8B- + H+ = C3H9B

Quantity Value Units Method Reference Comment
Deltar1532. ± 26.kJ/molG+TSMurphy and Beauchamp, 1976gas phase; Between AsH3,PH3; value altered from reference due to change in acidity scale; B
Quantity Value Units Method Reference Comment
Deltar1502. ± 25.kJ/molIMRBMurphy and Beauchamp, 1976gas phase; Between AsH3,PH3; value altered from reference due to change in acidity scale; B

References

Go To: Top, 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.

Holliday, Reade, et al., 1971
Holliday, A.K.; Reade, W.; Johnstone, R.A.W.; Neville, A.F., Photo-electron spectrum of trivinylboron, Chem. Commun., 1971, 51. [all data]

Law and Margrave, 1956
Law, R.W.; Margrave, J.L., Mass spectrometer appearance potentials for positive ion fragments from BF3, B(CH3)3, B(C2H5)3, B(OCH3)3, and HB(OCH3)2, J. Chem. Phys., 1956, 25, 1086. [all data]

Berger, Kroner, et al., 1976
Berger, H.-O.; Kroner, J.; Noth, H., Die borhalogen-bindung in Methylhalogenboranen: Photoelektronenspektren und ab initio-Rechnungen, Chem. Ber., 1976, 109, 2266. [all data]

Barker, Lappert, et al., 1975
Barker, G.K.; Lappert, M.F.; Pedley, J.B.; Sharp, G.J.; Westwood, N.P.C., Bonding studies of boron and the group 3-5 elements. Part XV. He(I) photoelectron spectra of monomeric group 3 tri-halide, trimethyl, and mixed halogenomethyl species, J. Chem. Soc. Dalton Trans., 1975, 1765. [all data]

Fuss and Bock, 1974
Fuss, W.; Bock, H., Photoelectron spectra and molecular properties. XXXVI. (H3C)3B, (H3C)2BF, (H3C)2BN(CH3)2, and (H3C)2CC(CH3)2: The use of ionization potentials in assigning UV spectra, J. Chem. Phys., 1974, 61, 1613. [all data]

Murphy and Beauchamp, 1976
Murphy, M.K.; Beauchamp, J.L., Acid-base properties and gas-phase ion chemistry of (CH3)3B, J. Am. Chem. Soc., 1976, 98, 1433. [all data]


Notes

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