Synthesis and crystal structure of La21Cr8−2aAlbGe7−bC12  [a = 0.22 (2) and b = 0.758 (19)]

Pabla, J.; Janssen, Y.; Simonson, J.W.

doi:10.1107/S2056989016015668

Acta Crystallographica Section E
Acta Crystallographica
Section E CRYSTALLOGRAPHIC COMMUNICATIONS

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Figure 1
(a) A view of the crystal structure of La₂₁Cr_8−2aAl_bGe_7−bC₁₂ along [100]. (b) The same crystal structure from an arbitrary view above the ab plane. (c) Cr-deficient Cr_4−aC₆ substructure depicted as four tetrahedrally arranged and vertex-linked CrC₃ plaquettes. (d) La3 coordination polyhedron. (e) Al2/Ge2 coordination polyhedron. In all sub-figures, colors are as follows: La (white), Cr (red), Al (green), Ge (blue), and C (black). Polyhedra are colored according to the central element. In c–e, the ellipsoids correspond to 99% probability.

CRYSTALLOGRAPHIC
COMMUNICATIONS

ISSN: 2056-9890

Volume 72| Part 11| November 2016| Pages 1565-1568

https://doi.org/10.1107/S2056989016015668

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