Compressed octahedral coordination in chain compounds containing divalent copper: structure and magnetic properties of CuFAsF6 and CsCuAlF6

Zoran Mazej (1) , Iztok Arcon (2) , Primoz Benkic (1) , Alojz Kodre (3) , Alain Tressaud (4)

1 Department of Inorganic Chemistry and Technology
2 Nova Gorica Polytechnic
3 FMF - Faculty of Mathematics and Physics [Ljubljana]
4 ICMCB - Institut de Chimie de la Matière Condensée de Bordeaux

Crystal structures and magnetic investigations of CuFAsF6 and CsCuAlF6 are reported. Together with KCuAlF6, these appear to be the only examples of Jahn-Teller pure CuII compounds containing only one type of ligand that exhibits a compressed octahedral coordination geometry. The Rietveld method has been used for refining the CsCuAlF6 structure based on neutron powder diffraction data at 4 K...

Mots clés: Copper; EXAFS spectroscopy; Fluorides; Jahn-Teller distortion; Magnetic properties; Structure elucidation

Domaines: Matériaux

Zoran Mazej, Iztok Arcon, Primoz Benkic, Alojz Kodre, Alain Tressaud. Compressed octahedral coordination in chain compounds containing divalent copper: structure and magnetic properties of CuFAsF6 and CsCuAlF6. Chemistry - A European Journal, 2004, 10 (20), pp.5052-5058. ⟨10.1002/chem.200400397⟩. ⟨hal-00156365⟩