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Metal-encapsulation induces a highly regioselective Bingel-Hirsch reaction of the labile Y@Cs(6)-C82.
Shen, Wangqiang; Yang, Le; Li, Bo; Jin, Peng; Yu, Bing; Cong, Hailin; Akasaka, Takeshi; Lu, Xing.
Afiliación
  • Shen W; School of Materials Science and Engineering, Hebei University of Technology, Tianjin 300130, P. R. China. china.peng.jin@gmail.com.
Chem Commun (Camb) ; 56(92): 14357-14360, 2020 Nov 19.
Article en En | MEDLINE | ID: mdl-33057484
The chemical properties of a prototypical labile mono-EMF, Y@Cs(6)-C82, have been systematically disclosed for the first time via a Bingel-Hirsch reaction. Three mono-adduct isomers, namely, 2a, 2b and 2c out of 44 possibilities for the Y@Cs(6)-C82 cage have been readily isolated, demonstrating surprisingly high regioselectivity. Crystallographic results of 2b unambiguously confirm its molecular structure with a singly bonded bromomalonate group attached onto the Cs(6)-C82 cage. Further computational results rationalize that the high regioselectivity is a consequence of the localization of high spin density and large frontier molecular orbital distribution on the corresponding carbon atoms stemming from the encapsulation of an yttrium atom into the low-symmetry Cs(6)-C82 cage with three-electron transfer from the metal to the cage.

Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Chem Commun (Camb) Asunto de la revista: QUIMICA Año: 2020 Tipo del documento: Article Pais de publicación: Reino Unido

Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Chem Commun (Camb) Asunto de la revista: QUIMICA Año: 2020 Tipo del documento: Article Pais de publicación: Reino Unido