Self-Assembly of Polyhedral Indium–Organic Nanocages

A synthetic strategy to construct discrete indium–organic polyhedra has been illustrated based on small three-membered windows from a 2,5-pyridinedicarboxylate (PDC) ligand with an angle of 120°. [Et2NH2]6[In6(PDC)12] (InOF-10) is a high-symmetry octahedron with eight three-membered windows, and [Et2NH2]18[In18(BPDC)6(PDC)30] (InOF-11) is a complex polyhedron derived from 3-edge-removed octahedra with an auxiliary biphenyl-3,3′-dicarboxylate (BPDC) ligand. Moreover, the sorption behavior of the latter is also well investigated.

本工作阐明了一种合成策略，可基于由带有120°夹角的2,5-吡啶二羧酸（2,5-pyridinedicarboxylate, PDC）配体形成的小尺寸三元窗口，构建离散型铟有机多面体（discrete indium–organic polyhedra）。配合物[二乙胺阳离子]₆[In₆(PDC)₁₂]（InOF-10）为带有八个三元窗口的高对称性八面体结构；而配合物[二乙胺阳离子]₁₈[In₁₈(BPDC)₆(PDC)₃₀]（InOF-11）则是借助辅助性联苯-3,3′-二羧酸（biphenyl-3,3′-dicarboxylate, BPDC）配体，由去除3条棱的八面体衍生得到的复杂多面体。此外，研究者还对后者的吸附行为开展了系统深入的研究。