Cluster Organic Framework Based on Er3 and Cu5 Cluster Units

A novel cluster organic framework, Er₃Cu₅I₄L₁₀(H₂O) (1, L = 4-pyridin-3-yl-benzonate), has been hydrothermally made and structurally characterized by single crystal X-ray diffraction. Structure analysis shows Er₃(COO)₆]³⁺ (Er₃) clusters are linked by carboxylate groups generating one dimensional wave-like chain, which further extended by Cu₅I₄ ⁺ (Cu₅) clusters into three dimensional heterometallic cluster organic framework. From the perspective of topology, such framework defines a new (7,9)-connected net, considering Er₃ and Cu₅ cores as the nodes. Furthermore, the elemental analysis, powder X-ray diffraction, infrared spectra and thermogravimetric analysis are also studied.