Syntheses, Structures, and Characterizations of Four New Silver(I) Sulfonate Coordination Polymers with Neutral Ligands

In this paper, four novel silver(I) sulfonate coordination polymers containing neutral ligands, namely, [Ag 2 L1(biim) 2 ]·2H 2 O ( 1 ), AgL2(biim) ( 2 ), [Ag(HL3)(Pic) 2 ]·H 2 O ( 3 ), and [Ag 3 (L3)(HL3)(4,4‘-bipy) 3 (H 2 O) 2 ]·4H 2 O ( 4 ), have been synthesized [L1 = 3-carboxy-4-hydroxybenzenesulfonate, L2 = p -aminobenzenesulfonate, H 2 L3 = p -hydroxybenzenesulfonic acid, biim = 1,1‘-(1,4-butanediyl)-bis(imidazole), Pic = β-picoline, 4,4‘-bipy = 4,4‘-bipyridine]. For compounds 1 and 2, Ag(I) cations are bridged by biim ligands to form a one-dimensional (1D) “zigzag” chain, and L1 and L2 sulfonate ligands are not coordinated to the silver cation. Compound 3 has a dimeric structure in which two silver cations are bridged by two HL3 ligands. For compound 4, L3 ligand coordinates to a silver cation as a monodentate ligand, and Ag(I) cations are bridged by 4,4‘-bipy ligands to form a 1D chain. Compound 1 contains water dimers, while compound 4 contains water trimers. Compounds 1 − 3 display room-temperature photoluminescence.