Multi-metallic Prussian blue compound Ni1.125Co0.375[Fe(CN)(6)]center dot 6.8H(2)O has been synthesized. The Mossbauer spectroscopy at room temperature and IR spectra Study revealed that the metal ions are bonded through cyanide ligand and the presence of low spin Fe-III(S = 1/2) and high spin Fe-III(S = 5/2) ions, as showed in these structure: Fe-III(S = 1/2)-CN-(Co-II/Ni-II)(96%) and Fe-III(S = 5/2)-NC-(Co-II/Ni-II) (4%). The Curie constant of C = 3.00 cm(3) K mol(-1) and Weiss paramagnetic Curie temperature of theta = 16.43 K were observed in fitting according to Curie-Weiss law. These results indicate that there existed a ferromagnetic exchange interaction in the complexes. The observed value of coercive field (H-c) and remanent magnetization (M-r) at 4 K for the compound are 497 Oe and 1.03 N beta. The presence of spin-glass behaviours in the compound is ascribed mainly to domain mobility OF domain growth under different cooling conditions. (C) 2009 Elsevier B.V. All rights reserved.