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


Data at NIST subscription sites:

NIST subscription sites provide data under the NIST Standard Reference Data Program, but require an annual fee to access. The purpose of the fee is to recover costs associated with the development of data collections included in such sites. Your institution may already be a subscriber. Follow the links above to find out more about the data in these sites and their terms of usage.

Gas phase ion energetics data

Go To: Top, 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

View reactions leading to C9H10+ (ion structure unspecified)

Ionization energy determinations

IE (eV) Method Reference Comment
8.6 ± 0.1EIKoppel, Schwarz, et al., 1974LLK
8.60 ± 0.01EIRakita, Hoffman, et al., 1973LLK
8.52CTSPitt, 1970RDSH
9.05 ± 0.05EIMeier, Heiss, et al., 1968RDSH
8.50PESantiago, Gandour, et al., 1978Vertical value; LLK
8.46 ± 0.03PEHeilbronner, Hoshi, et al., 1976Vertical value; LLK
8.45 ± 0.02PEMaier and Turner, 1973Vertical value; LLK
8.46PEBrogli, Giovannini, et al., 1973Vertical value; LLK

Appearance energy determinations

Ion AE (eV) Other Products MethodReferenceComment
C9H9+12.1 ± 0.1HEIKoppel, Schwarz, et al., 1974LLK


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.

Koppel, Schwarz, et al., 1974
Koppel, C.; Schwarz, H.; Bohlmann, F., Elektronenstossinduzierte fragmentierung von acetylenverbindungen. VIII. Struktur der stabilen und instabilen ionen[C9H9]+ aus isomeren C9H10- kohlenwasserstoffen, Org. Mass Spectrom., 1974, 8, 25. [all data]

Rakita, Hoffman, et al., 1973
Rakita, P.E.; Hoffman, M.K.; Andrews, M.N.; Bursey, M.M., «sigma»-«pi» Conjugation in group IVA compounds of indene and indane, J. Organomet. Chem., 1973, 49, 213. [all data]

Pitt, 1970
Pitt, C.G., Hyperconjugation: An alternative to the concept of the p«pi»-d«pi» bond in Group IV chemistry, J. Organomet. Chem., 1970, 23, 35. [all data]

Meier, Heiss, et al., 1968
Meier, H.; Heiss, J.; Suhr, H.; Muller, E., Energetische Untersuchungen zum Mills-Nixon-Effekt. Ionisierungsenergien von Benzolmolekulen mit ankondensierten gesattigten Ringen, Tetrahedron, 1968, 24, 2307. [all data]

Santiago, Gandour, et al., 1978
Santiago, C.; Gandour, R.W.; Houk, K.N.; Nutakul, W.; Cravey, W.E.; Thummel, R.P., Photoelectron and ultraviolet spectra of small-ring fused aromatic molecules as probes of aromatic ring distortions, J. Am. Chem. Soc., 1978, 100, 3730. [all data]

Heilbronner, Hoshi, et al., 1976
Heilbronner, E.; Hoshi, T.; von Rosenberg, J.L.; Hafner, K., Alkyl-induced, natural hypsochromic shifts of the 2A<--2X and 2B<--2X transitions of azulene and naphthalene radical cations, Nouv. J. Chim., 1976, 1, 105. [all data]

Maier and Turner, 1973
Maier, J.P.; Turner, D.W., Steric inhibition of resonance studied by molecular photoelectron spectroscopy. Part 2. Phenylethylenes, J. Chem. Soc. Faraday Trans. 2, 1973, 69, 196. [all data]

Brogli, Giovannini, et al., 1973
Brogli, F.; Giovannini, E.; Heilbronner, E.; Schurter, R., Die photoelektronen spektren der benzocycloalkene, Chem. Ber., 1973, 106, 961. [all data]


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