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Licensed Unlicensed Requires Authentication Published by De Gruyter (O) August 25, 2010

Crystal chemistry, plane nets and arabic mosaics: the structure of CsBaCr3F12, a new MX4 network


CsBaCr3F12 is monoclinic (S.G.: C2/c): a = 17.184(4) Å, b = 9.886(2) Å, c = 15.037(5) Å, β = 124.32(2)°, Z = 8. The structure was solved from single crystal data using 2218 independent reflections (R = 0.053, Rw = 0.042). The structure is built up from [Cr3F12] layers of vertex-sharing octahedra separated by cesium and barium ions located in an ordered way. The topology of the layers is unique and illustrates a case of plane net predicted by O'Keeffe, yet unknown in nature but imaginated by arabic artists in the 18th century.

Published Online: 2010-8-25
Published in Print: 1989-2-1

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