Mossbauer and Magnetic Studies in Cyano-Bridged Fe-Mn Bimetallic Complexes

Prussian blue compound K0.1Mn1.4[Fe(CN)(6)]center dot yH(2)O has been synthesized. In accord with XRD, Mossbauer spectroscopy and IR spectra study, the structure is consistent suffer structural disorder with the face-centered structure (fcc) Prussian blue lattice. The compounds exhibits spontaneous magnetic ordering at low temperatures; in the temperature range 5-100 K, the magnetic susceptibilities of the compound can be fit to the Curie-Weiss law and Weiss paramagnetic Curie temperature of theta=11K. The increasing large line widths of the doublet show a dynamic behavior which means that the electric field gradient is moving from one direction to another direction in the crystal. Until the sample was cooled down to 11K, we have detected the magnetic splitting in the compound. (c) 2012 Published by Elsevier B.V. Selection and/or peer-review under responsibility of Garry Lee