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Two one-dimensional compounds based on pyramidal {TbCu4} units and formate ligand: chair-like [(H2O)2(ClO4)2]2− clusters and slow relaxation of magnetization
With formate as ligand, two 1-D 3d–4f compounds (linear and zigzag) based on pyramidal {TbCu4} unit were obtained. Chair-like [(H2O)2(ClO4)2]2− clusters and μ5-η1:η4 bridging mode of formate were observed in the linear one which also displays slow relaxation of the magnetization.