The proton hyperfine interaction in HC60, signature of a potential interstellar fullerene
Morton, J. R.; Preston, K. F.; Krusic, P. J.; Knight, L. B. The proton hyperfine interaction in HC60, signature of a potential interstellar fullerene. Chem. Phys. Lett. 1993, 204, 481-485.
HC60 is probably present in interstellar space. Before radioastronomers can mount an effort to detect it, its proton hyperfine interaction must be determined in the laboratory with great accuracy. By reacting C60 with H atoms we have observed the EPR spectrum of HC60 in both liquid and solid phases. In solid neon at 4 K,the proton hyperfine interaction is slightly anisotropic, with a|=97.8 MHz and aâŠ¥=91.0 MHz. The isotropic hyperfine interaction of 93 MHz agrees with that obtained in liquid benzene, and is 10% smaller than calculated from the muonium hyperfine interaction in MuC60. The origin of this discreapancy is discussed.
Chemical Physics Letters