Influence of symmetric benzene–polycarboxylate acids on the structures of silver-aminopyrimidyl derivative system

Two novel coordination polymers, [Ag(BTC)1/3(ADMP)]n (1), [Ag(BDC)1/2(ADMP)]n (2) (2-amino-4,6-dimethylpyrimidine = ADMP; H3BTC = 1,3,5-benzenetricarboxylic acid; H2BDC = 1,4-benzenedicarboxylic acid), have been synthesized under the ammoniacal conditions and structurally characterized. In complex 1, H3BTC ligand showing a new coordination mode links silver atoms to generate a two-dimensional (2-D) honeycomb-like structure, which is further linked through ADMP ligands to produce a complicated three-dimensional (3-D) framework. Complex 2 features a 2-D infinite layer framework consisting of binuclear silver clusters, which is further stacked via intermolecular Cmethyl–H⋯π short contacts and Van der Waals interactions to form a 3-D supramolecular architecture.