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Calculated Electronic Behavior and Spectrum of Mg+@C60 Using a Simple Jellium-shell Model

Present address: Department of Physics and Astronomy, Louisiana State University, Baton Rouge, LA 70803-4001, USA
Present address: Department of Aeronautics and Astronautics Engineering, Purdue University, West Lafayette, IN 47907, USA
Department of Physics, University of Northern Iowa, Cedar Falls, IA 50614, USA
Department of Physics, Texas A&M University, College Station, TX 77843-4242, USA
Author to whom correspondence should be addressed.
Int. J. Mol. Sci. 2004, 5(11), 333-346;
Received: 13 July 2004 / Accepted: 15 November 2004 / Published: 30 November 2004
We present a method for calculating the energy levels and wave functions of any atom or ion with a single valence electron encapsulated in a Fullerene cage using a jelluim-shell model. The valence electron-core interaction is represented by a one-body pseudo-potential obtained through density functional theory with strikingly accurate parameters for Mg+ and which reduces to a purely Coulombic interaction in the case of H. We find that most energy states are affected little by encapsulation. However, when either the electron in the non-encapsulated species has a high probability of being near the jellium cage, or when the cage induces a maximum electron probability density within it, the energy levels shift considerably. Mg+ shows behavior similar to that of H, but since its wave functions are broader, the changes in its energy levels from encapsulation are slightly more pronounced. Agreement with other computational work as well as experiment is excellent and the method presented here is generalizable to any encapsulated species where a one-body electronic pseudo-potential for the free atom (or ion) is available. Results are also presented for off-center hydrogen, where a ground state energy minimum of -14.01 eV is found at a nuclear displacement of around 0.1 Å. View Full-Text
Keywords: Encapsulation; confined atoms; magnesium; Fullerenes; spectral shift Encapsulation; confined atoms; magnesium; Fullerenes; spectral shift
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Even, W.; Smith, J.; Roth, M.W.; Schuessler, H.A. Calculated Electronic Behavior and Spectrum of Mg+@C60 Using a Simple Jellium-shell Model. Int. J. Mol. Sci. 2004, 5, 333-346.

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