A new open framework material based on designed semi-rigid T-shaped tricarboxylate ligand

A new compound, namely [Cd3(L1)2(μ2-H2O)2]n·3nH2O (1 H3L1 = 5-(benzonic-4-ylmethoxy)-isophthalic acid), containing one-dimensional (1D) foot-shaped channels was hydrothermally synthesized. It was a three-dimensional pillar-layered framework based on rod-shaped metal-carboxylate second building units (SBUs) and designed T-shaped polycarboxylate ligand. Remarkably, 1D zigzag water chains directed by hydrogen bonds were captured in the channels, further stabilizing the whole framework. Moreover, this compound exhibits strong blue photoluminescence at room temperature.

Presented here is a new three dimensional (3D) open Cd(II) coordination polymer, [Cd3(L1)2(μ2-H2O)2]n·3nH2O (1 H3L1 = 5-(benzonic-4-ylmethoxy)-isophthalic acid), which captures a one dimensional (1D) zigzag water chain in the channels and exhibits strong blue photoluminescence at room temperature.Figure optionsDownload as PowerPoint slideResearch Highlights
► In this work, we designed and synthesized a new semi-rigid T-shaped tricarboxylate ligand,5–(benzonic–4–ylmethoxy)–isophthalic acid (H3L1).
► The hydrothermal reaction of Cd(OAC)2
• 2H2O with H3L1 lead to a new open cadmium(II) compound.
► One-dimensional zigzag water chains were captured in the foot-shaped channels.