Two novel luminescent silver(I) coordination polymers containing octanuclear silver cluster units or ligand unsupported AgAg interactions constructed from 5-sulfoisophthalic acid (H3SIP) and organic amineCCDC reference numbers 680834 (1) and 680835 (2). For crystallographic data in CIF or other electronic format see DOI: 10.1039/b808571d

Self-assembly of Ag(NO3)2with 5-sulfoisophthalic acid monosodium salt (NaH2SIP) in the presence of piperazine (pip) or 4,4′-bipyridyl (bpy) produced two new silver(I) coordination polymers, {(H2pip)2[Ag8(SIP)4(H2O)4](H2O)4}n(1) and {[Ag(bpy)][Ag(HSIP)(bpy)](H2O)2}n(2), respectively. Single-crystal X-ray diffraction reveals that compound 1has a 2D silver carboxylate-sulfonate layered structure containing an uncommon octanuclear [Ag8(CO2)8] cluster wherein the eight silver(I) atoms form two intersecting Ag4planes. The 2D layers are further linked by the H2pip molecules through hydrogen bonds into a 3D supramolecular structure. Compound 2features a 2D supramolecular network formed by silver(I)-bpy double chains and HSIP ligands through the combination of coordination bonds, ligand unsupported AgAg interactions and weak AgO coordinative interactions. In the solid state at room temperature, compound 1exhibits blue photoluminescence with a maximum at 450 nm upon excitation at 365 nm. Compound 2shows green photoluminescence with a maximum at 564 nm upon excitation at 392 nm. [ABSTRACT FROM AUTHOR]