One-Dimensional Iron(III) and Two-Dimensional Iron(III) Nickel (II) Cyanide-Bridged Ferromagnetic Arrays from Hexacyanoferrate (III) and (Ni(cyclam))~(2+) Building Blocks: Synthesis, Crystal Structure and Magnetic Properties

摘要

The X-ray structures and magnetic properties of airon(II) linear chain and a honeycomb-like layered iron(II)-nickel(II) cyanide-bridged compound are reported. The formercontains alternating iron sites and unexpected ferromagneticbehaviour, justified on the basis of the axial distortion fromregular octahedral geometry of one of the iron ions. The latter ismetamagnetic with ferromagnetic intralayers andantiferromagnetic interlayers interactions with a Néeltemperature, T_N=7.7 K. The antiferromagnetic ordered phaseexhibits spin-canting and long range ferromagnetic ordering at 3K with a characteristic hysteresis loop.