Twinned caesium cerium(IV) penta-fluoride.
Single-crystals of CsCeF5 were synthesized hydro-thermally. The crystal under investigation was twinned by pseudo-merohedry with a twofold rotation around the c axis as an additional twinning operation. The crystal structure is built of layers of distorted edge- and corner-sharing CeF8 square-anti-prisms. The Cs(+) cations are located between the layers and exhibit coordination numbers of nine. Upon compression, CsCeF5 undergoes an irreversible phase transition at about 1 GPa.
Institute of Crystallography, RWTH Aachen University, Jägerstr. 17-19, 52066 Aachen, Germany.
Andrzej
A
Grzechnik
Department of Chemistry, Clemson University, Clemson SC 29634, USA.
Christopher C
CC
Underwood
Department of Chemistry, Clemson University, Clemson SC 29634, USA.
Joseph W
JW
Kolis