Supramolecular assembly of coordination networks in silver(I) triple salts containing acetylenediide and some N,O-donor ligands

New silver(I) triple salts (Ag2C2)(AgNO3)4(AgL1)2(L1H)2 (1), (Ag2C2)(AgCF3CO2)2(AgL1)2(L1H)1/2 (2), [(Ag2C2)(AgCF3CO2)4(L2)(H2O)] · (L2H2) (3), (Ag2C2)(AgNO3)3(AgL3)2 (4), and [(Ag2C2)(AgCF3CO2)4(AgL3)2(H2O)2] · H2O (5) (L1H = nicotinic acid, L2H = isonicotinic acid, L3H = 2-pyrazinecarboxylic acid) synthesized by the hydrothermal method have been shown to exhibit a variety of supramolecular structures. Compound 3 provides an interesting example of (L2H2)+-pillared three-dimensional architecture via hydrogen bonding.