Abstract
The geometric parameters and energy characteristics of small endofullerenes N@Cn (n = 20, 24, 30, 32, 40, 50) and N@C60 in the quartet ground state were calculated by the B3LYP/6-31G* method. The N atom is located at the center of the carbon cage in all molecules except N@C30, where it is bound to the cage wall. Encapsulation of nitrogen atom has little effect on the fullerene cage geometry for n = 40, 50, and 60. No significant charge transfer from the N endo-atom to the cage was revealed for all the N@Cn endofullerenes studied. The calculated spin density on the nitrogen endo-atom increases as the size (n) of the carbon cage increases. The relative stabilities of Cn fullerenes and corresponding endofullerenes N@Cn are discussed.
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Published in Russian in Izvestiya Akademii Nauk. Seriya Khimicheskaya, No. 1, pp. 15–20, January, 2006.
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Breslavskaya, N.N., Levin, A.A. & Buchachenko, A.L. Quantum chemical calculations of N@Cn endofullerenes (n ≤ 60). Russ Chem Bull 55, 16–21 (2006). https://doi.org/10.1007/s11172-006-0209-z
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DOI: https://doi.org/10.1007/s11172-006-0209-z