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.