Grzechnik A1, Underwood CC2, Kolis JW2.
Acta Crystallogr Sect E Struct Rep Online. 2014 Feb 19;70(Pt 3):i12-i13. doi: 10.1107/S1600536814003286. eCollection 2014.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.