Assembly of luminescent Ag(I) coordination architectures adjusted by modification of pyrimidine-based thioether ligands

Two new structurally related pyrimidine-based thioether ligands, angular ditopic ligand 1,3-bis(2-pyrimidinylthiomethyl)benzene (L2) and linear ditopic ligand 1,4-bis(2-pyrimidinylthiomethyl)benzene (L3), have been designed and prepared. Reaction of two shaped-specific ligands with different silver(I) salts affords three novel luminescent coordination architectures: discrete metallomacrocycle [Ag4(L2)2(NO3)4] · 2MeOH (3), 1D chain {[Ag2L3(NO3)2] · 2CCl3}n (4) and 2D wire netlike structure {[AgL3(DMF)]ClO4 · 0.25H2O}n (5). The results show that the nature of organic ligands, geometric requirement of metal atoms and counter anions have great influence on the structures of metal-organic frameworks.