Discrete Fulleride Anions and Fullerenium Cations

Abstract

His research interests include reactive cation and superacid chemistry with inert carborane counterions, ionic liquids, bioinorganic chemistry, spin-coupling phenomena, fullerene chemistry, and new carbon-or porphyrin-based materials. He is a Sloan Fellow, a Dreyfus Teacher−Scholar Awardee, and a Guggenheim Fellow. Robert Bolskar received his B.S. degree in Chemistry from Carroll College in Waukesha, WI, in 1992. He earned his Ph.D. degree at the University of Southern California in Los Angeles under the direction of Christopher Reed in 1997, investigating the synthetic redox chemistry of fullerene anions and cations. In 1998 he moved to the University of California, Riverside, as Managing Research Associate. He is currently Senior Chemist at TDA Research in Wheat Ridge, CO. His research interests include the chemistry and physics of fullerene compounds, supramolecular chemistry, strongly oxidizing systems, and electrophilic cations.

Towards better understanding of C60organosols

“…Taking into account the size of the colloidal species, this means that only about 0.002% of C 60 molecules are ionized. It is, therefore, not surprising that we were unable to observe neither a distinct ESR signal of the ion-radicals nor the typical near-IR spectra of the ionic species 59 in the 10 À4 -4 Â 10 À6 M C 60 organosols. However, the electrospray data allowed for registering the C 60 À anions (Fig.…”

Molecular terms, magnetic moments, and optical transitions of molecular ions C60m±

“…However, the zero of energy in Tables IX and X is different for t n 1u and t n 1g configurations. When one t 1u electron is promoted to a t 1g state, its energy is increased by ∼1.153 eV [9,38], that is,…”

“…The quantity △ǫ 2 is called electron affinity of C 60 and it was measured experimentally [9,37]. It accounts for the energy difference due to the interactions of the electron with the carbon nuclei and the "core" electrons.…”

Infrared Signatures of the Dynamic Jahn-Teller Effect in Fullerene-Based Materials

“…Deviations from the atomic positions in the icosahedral symmetry are very small, of the order of 0.05 Angstroms [3,8]. Because of the minuteness of the distortion in question, and because of the dynamic nature of the high-temperature state, X-ray diffraction does not detect any deviation.…”

“…Several experimental findings, both in isolated ions in solution [3] and in the solid state [4][5][6], have been explained by a Jahn-Teller distortion. However, the question remains hitherto unanswered how much the external crystal field influences the electronic and vibrational levels and how much the internal degrees of freedom contribute.…”