Proton transfer from a fullerene dication. Bracketing the gas-phase acidity of C[sub 60]H[sup [center dot]2+]

Journal Article · Wed Jul 14 00:00:00 EDT 1993 · Journal of the American Chemical Society; (United States)

DOI:https://doi.org/10.1021/ja00067a050· OSTI ID:5621107

Petrie, S; Javahery, G; Wincel, H; Bohme, D K ^[1]

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1. York Univ., North York, Ontario (Canada)

Several gas-phase ion-molecule reactions of the hydrogenated fullerene dication C[sub 60]H[sup [center dot]2+] (produced by the reaction of C[sub 60][sup [center dot]3+] + C[sub 3]H[sub 8]) have been studied using a SIFT apparatus at 0.35 [+-] 0.01 Torr and 294 [+-] 2 K. Proton transfer from C[sub 60]H[sup [center dot]2+] to the neutrals CH[sub 2]CHCN, CH[sub 3]OH, CH[sub 3]NO[sub 2], HCOOH, CH[sub 2](CN)[sub 2], H[sub 2]CO, and HCN has been observed but was not detected in reactions of C[sub 60]H[sup [center dot]2+] with several other neutrals. The occurrence of efficient proton transfer to neutrals having a gas-phase basicity (GB) value > 170 kcal mol[sup [minus]1] and failure to proton transfer with neutrals having GB < 163 kcal mol[sup [minus]1] is used to bracket the gas-phase acidity of GA(C[sub 60]H[sup [center dot]2+]) = 124 [+-] 8 kcal mol[sup [minus]1], when consideration is taken of the effects of Coulombic repulsion between the product ions. The reactivity of C[sub 60]H[sup [center dot]2+] is compared to that of C[sub 60][sup 2[center dot]] and thermochemical data are derived for [delta]H[degrees][sub f] (C[sub 60]H[sup [center dot]2+]), IE(C[sub 60]H[sup +]), the hydrogen-atom affinity of C[sub 60][sup 2+], and the hydride affinity of C[sub 60][sup [center dot]3+]. 47 refs., 2 figs., 1 tab.

• OSTI ID: 5621107
• Journal Information: Journal of the American Chemical Society; (United States), Vol. 115:14; ISSN 0002-7863
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
36 MATERIALS SCIENCE
CATIONS
CHEMICAL REACTIONS
FULLERENES
ORGANIC COMPOUNDS
EXPERIMENTAL DATA
FORMALDEHYDE
FORMIC ACID
HYDROCYANIC ACID
METHANOL
NITROMETHANE
PH VALUE
PROTONS
THERMODYNAMICS
VAPORS
ALCOHOLS
ALDEHYDES
BARYONS
CARBON
CARBOXYLIC ACIDS
CHARGED PARTICLES
CHEMICAL EXPLOSIVES
CYANIDES
DATA
ELEMENTARY PARTICLES
ELEMENTS
EXPLOSIVES
FERMIONS
FLUIDS
GASES
HADRONS
HYDROGEN COMPOUNDS
HYDROXY COMPOUNDS
INFORMATION
INORGANIC ACIDS
IONS
MONOCARBOXYLIC ACIDS
NITRO COMPOUNDS
NONMETALS
NUCLEONS
NUMERICAL DATA
ORGANIC ACIDS
ORGANIC NITROGEN COMPOUNDS
400201* - Chemical &amp; Physicochemical Properties
360600 - Other Materials