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

Abstract

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.