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Keywords:

  • boron compounds;
  • bromides;
  • carbides;
  • lanthanoids;
  • solid-state structures
Thumbnail image of graphical abstract

The first examples of an expectedly large class of rare earth carbide halides are the new compounds Gd4Br3C2B, La3Br2C2B, and Ce6Br3C3B2. Their structures contain low-dimensional fragments of the three-dimensional network of metal boride carbides; typical building units are discrete C atoms, and B[BOND]C, C[BOND]B[BOND]B[BOND]C, and C[BOND]B[BOND]C groups. The projection of the structure of Gd4Br3C2B along [010] is shown on the right. • = B, ○ = C, ○ = Gd.