| Summary: | The synthesis and characterization of three tridentate ligands for new MOFs are described. A triple aminolysis of the 1,3,5-tribenzoyl chloride with <i>p</i>-aminobenzoic acid gave the tricarboxylic acid <b>3</b> in 90% yield. Moreover, the same reaction, also from the 1,3,5-tribenzoyl chloride, but using <i>p</i>-aminobenzonitrile gave the new <i>tris</i>-benzonitrile <b>5</b> in 85% yield. Finally, this later one was treated with sodium azide and a Lewis acid to synthesize the new <i>tris</i>-tetrazole-based ligand <b>7</b> in 72% yield through a [3 + 2] azide-nitrile cycloaddition. It is noteworthy that the isosterism between carboxylic acids and tetrazoles may be considered to design and fabricate new MOFs with similar properties.
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