Two Silver(I) Coordination Polymers Based on Mixed Ligands: Synthesis and Structures

Two new AgI compounds, [Ag(MA)(FA)0.5]n (1) and [Ag(MA)(PES)]n center dot n(MA)center dot n(H2O) (2), were prepared by slow solvent evaporation methods from mixtures of MA and AgNO3 in the presence of FA or PES co-ligand [MA = melamine, FA = fumaric acetate and PES = 2-(4-pyridyl)ethanesulfonate]. Single crystal X-ray analysis reveals that 1 features a two-dimensional undulated layer framework that is further assembled into a three-dimensional interdigitated framework directed by hydrogen bonds. Compound 2 features a zero-dimensional dinuclear structure linked by weak Ag center dot center dot center dot O interactions, which is further extended into a complicated three-dimensional supramolecular framework constructed by hydrogen bonds.