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Study on a cyano-bridged FeⅢ 2NiⅡ complex high-field/frequency electron paramagnetic resonance(EPR) measurements shows that a low-spin FeⅢ-cyanide mononuclear building block can form a strong-field coordination envitoment and lead to a favorable alignment of anisotropy tensors1.A trinuclear complex(show in the center of the Figure 1.) was reported which perform a brilliant energy barrier of Δeff/kB = 16.7 K and a thermally stabilize ST = 2 ground state2.We intend to take a strategy of "brick and mortar" and replacement to optimizing the magnetic anisotropy while increasing the spin state of the molecule bu replacing single Ni2+with Ni2/Ni4 ect.Ni clusters.