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 (L-2) and linear ditopic ligand 1,4-bis(2-pyrimidinylthiomethyl)benzene (L-3), have been designed and prepared. Reaction of two shaped-specific ligands with different silver(I) salts affords three novel luminescent coordination architectures: discrete metallomacrocycle [Ag-4(L-2)(2)(NO3)(4)]center dot 2MeOH (3), 1D chain {[Ag2L3 (NO3)(2)]center dot 2CCl(3)}(n) (4) and 2D wire netlike structure {[AgL3 (DMF)]-ClO4 center dot 0.25H(2)O}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. (c) 2005 Elsevier B.V. All rights reserved.