Abstract
Room temperature reactions of the ternary adducts of AgNO
3
, bipodal ligand [4,4′-bipyridine (4,4′-bpy) or trans-1,2-bis(4-pyridyl)ethylene (tbpe) or 1,2-bis(4-pyridyl)ethane (bpe)] and organic ligand [4-aminobenzoic acid (4-aba) or 4-hydroxybenzoic acid (4-hba) or terephthalate ion (tph)] afford new 3-D supramolecular coordination polymers (SCPs), namely, {[Ag(4,4′-bpy) · H
2
O](4-ab) · 2H
2
O} (1), {[Ag(tbpe)]0.5(4-hb) · 3H
2
O} (2), [Ag
2
(L)
2
· (tph)] (L = 4,4′-bpy, tbpe) (3,4) and {[Ag
2
(bpe)
2
· (tph)] · 2H
2
O} (5). The bipodal ligand coordinates to silver forming a 1-D cationic chain (A), while the organic ligand and solvent form a 1-D anionic chain (B) via hydrogen bonds. The chains construct layers which are connected via hydrogen bonds and π-π stacking forming a 3-D network structure. The presence of the carboxylate, amino and hydroxyl groups in the organic ligands significantly extend the dimensionality via hydrogen bonds. All the SCPs 1-5 exhibit strong luminescence.