E 43 Electronic Properties and Chemical Bonds of 3d Atoms in Carbon Nanotubes and Metallocarbohedrenes / A. A. Sofronov, V. V. Ivanovskaya, Yu. N. Makurin, A. L. Ivanovskii // Russian Journal of Coordination Chemistry. - 2002. - Vol. 28, № 9. - P618-629 : il. - Bibliogr. : p. 628-629 (29 ref.) Рубрики: ХИМИЧЕСКИЕ НАУКИ Кл.слова (ненормированные): НАНОТРУБКИ КАРБОНОВЫЕ -- ФУЛЛЕРЕНЫ -- КАРБИД ТИТАНА Аннотация: The electronic states of 3d atoms (M = Ti, Cr, Fe, and Cu) intercalated into the bulk of carbon nanotubes (NT) or replacing the titanium atom in carbohedrene Ti8C12 are studied by the ab initio self-consistent discrete variation method. The electronic state, charge distributions, and parameters of interatomic interactions are analyzed in nanotubular composites M@NT depending on the NT structure ((9.0) or (4.4)) and position of the M atom (at the end or in the center of the NT) and depending on the cluster symmetry (Th or Td) and positions of M atoms in the metal–carbon cage for “substituted” metcars Ti7MC12. Possible changes in some physicochemical properties of the nanotubes and metallocarbohedrenes with the indicated 3d atoms are discussed Полный текст |