Share

Fulleren crystals.

Les cristaux de fullerènes.

Author(s) : FISCHER J. E., BERNIER P.

Type of article: Article

Summary

Research workers have been successful in producing C60 molecules, designated by their architecture "fullerens". On this basis, the chemistry of the systems derived from C60 has been studied together with the new molecular solid constituting a third crystalline form of carbon. Several molecular families related to the new molecule but having another chemical element have been highlighted. The C60 molecule is symmetric and the molecules are organized as monolayers stacked up leading to a cubic face centred three dimensional network. Such a molecular crystal is designated "plastic". The high and low temperature material structures are not the same and there is a temperature, below which the molecular dynamic properties change abruptly. This phase change is called "orientational melting". Certain compounds elaborated by insertion (of foreign atoms) show superconducting properties. A correlation between this temperature and the network constant of the cubic mesh with centered sides, but many points remain unknown. Research work continues and seems to promise potential applications. J.L.

Details

  • Original title: Les cristaux de fullerènes.
  • Record ID : 1993-2432
  • Languages: French
  • Source: Recherche - vol. 24 - n. 250
  • Publication date: 1993/01
  • Document available for consultation in the library of the IIR headquarters only.

Links


See the source

Indexing