Novel Silver(I) Coordination Polymers with a Series of Bis(arylthio)ether Ligands Bearing a <i>trans</i>-2-Butene Backbone

A series of bis(arylthio)ethers, trans-1,4-bis(phenylthio)-2-butene (L), trans-1,4-bis(2-pyridylthio)-2-butene (L), trans-1,4-bis(2-pyrimidinylthio)-2-butene (L), trans-1,4-bis(4-methyl-2-pyrimidinylthio)-2-butene (L), and trans-1,4-bis(5-methyl-1,3,4-thiadiazolylthio)-2-butene (L), have been designed and synthesized, and the reactions of these ligands with AgX salts (X = NO3-, ClO4-, or BF4-) lead to the formation of eight new metal−organic coordination polymers exhibiting from 1D to 3D frameworks. Single-crystal X-ray analysis showed that complexes 1, 2, and 4 exhibit 2D layer frameworks, and 3, 5, 6, and 8 have 1D chain structures, while 7 is a 3D coordination network. In these polymers, a variety of geometries of AgI and coordination modes of the organic ligands were observed due to the different numbers and relative orientation of N donors in the terminal groups of these ligands. In addition, the influences of counteranions and solvent coordination on the framework formations have been discussed. These results indicate that both steric and electronic effects of the ligands play important roles in affecting the structural topologies of such metal−organic coordination architectures.