Sc2B1.1C3.2, a New Rare-Earth Boron Carbide with Graphite-like Layers

Ying Shi, A. Leithe-Jasper, L. Bourgeois, Y. Bando, T. Tanaka

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16 Citations (Scopus)


A Sc-based boron carbide Sc2B1.1C3.2 with a two-dimensional graphite-like framework has been synthesized by a solid state chemical reaction route. Crystals have been grown successfully and the crystal structure could be assigned to represent a new structure type of rare-earth boron carbides. The trigonal crystal structure (a = b = 23.710(9) Å, c = 6.703(2) Å, P3m1 (No. 164)) is composed of alternate -[B1/3C2/3]-Sc-C-Sc-[B 1/3C2/3]-layers. The boron and carbon atoms -[B1/3C2/3]- form a significantly puckered graphite-like layer in a rather disordered way. The Sc-C-Sc units appear to be rather loosely accommodated between the [B1/3C2/3] units. Sc-Sc distances show a very close metal-metal contact. In the Sc-C-Sc units carbon atoms are surrounded by six Sc atoms in the form of a slightly distorted octahedron.

Original languageEnglish
Pages (from-to)442-449
Number of pages8
JournalJournal of Solid State Chemistry
Issue number2
Publication statusPublished - 1 Jan 1999
Externally publishedYes


  • Crystal structure
  • EELS
  • Graphite-related compound
  • ScBC
  • Scandium boron carbides

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