INTRODUCTION Recently, molecule-based magnet have been investigated as new magnetic materials [1] [2] [3] . In that field cyano-bridged complexes play an important role due to their special structure and outstanding magnetic properties as molecule-based magnets. Prussian blue analogues are the most known and studied cyanide-based frameworks [3] [4] [5] [6] . Prussian blue analogues C n A P [B(CN) 6 ] q •xH 2 O (Fig. 1 ) show various magnetic properties depending on their transition metal ion

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... [5] [6] [7] . The Mn-Fe cyanides, whose chemical formula is A x Mn[Fe(CN) 6 ] y •zH 2 O (A = K, Ni, Cs, Cu, Co), have been attracting renewed interest of the material scientists. The appeal of Prussian blue itself lies both in its optical and magnetic properties.The substitution of Fe(II) and Fe(III) by other paramagnetic metal ions M and M' has afforded a series of Prussian blue analogues with face-centered cubic structures. Hashimoto et al. 4, 5 have prepared a series of molecular alloy magnet, which magnetic parameters like saturation magnetization (M s ), Weiss paramagnetic Curie temperature (Θ), coercive field (H c ), transition temperature (T c ), etc. In this context, we have prepared multi-metal compound Ni 1.15 Mn 0.35 [Fe(CN) 6 ]•6H 2 O by co-precipitation method and the magnetic properties have been studied.