High-resolution kinetic energy release distributions and dissociation energies for fullerene ions Cn+, 42 < or = n < or = 90

K Głuch; S Matt-Leubner; O Echt; B Concina; P Scheier; T D Märk

doi:10.1063/1.1768172

High-resolution kinetic energy release distributions and dissociation energies for fullerene ions Cn+, 42 < or = n < or = 90

J Chem Phys. 2004 Aug 1;121(5):2137-43. doi: 10.1063/1.1768172.

Authors

K Głuch¹, S Matt-Leubner, O Echt, B Concina, P Scheier, T D Märk

Affiliation

¹ Institut fur Ionenphysik, Leopold Franzens Universitat, A-6020 Innsbruck, Austria.

PMID: 15260767
DOI: 10.1063/1.1768172

Abstract

We have measured the kinetic energy released in the unimolecular dissociation of fullerene ions, Cn+ --> C(n-2)+ + C2, for sizes 42 < or = n < or = 90. A three-sector-field mass spectrometer equipped with two electric sectors has been used in order to ensure that contributions from isotopomers of different masses do not distort the experimental kinetic energy release distributions. We apply the concept of microcanonical temperature to derive from these data the dissociation energies of fullerene cations. They are converted to dissociation energies of neutral fullerenes with help of published adiabatic ionization energies. The results are compared with literature values.