Organometallic Silver(I) Coordination Polymers and Supramolecular Complexes Based on Novel Multidentate Thiophene- and Benzenenitrile-Containing Symmetric and Unsymmetric Fulvene Ligands

Seven new conjugated symmetric and unsymmetric fulvene ligands L1−L7 were synthesized. Thirteen
new organometallic coordination polymers and supramolecular complexes were obtained through self-assembly based on these new fulvene ligands in the benzene/toluene mixed solvent system. Compounds
1−13 have been fully characterized by infrared spectroscopy, elemental analysis, and single-crystal X-ray
diffraction. The results indicate that the coordination chemistry of new fulvene ligands is versatile. They
can adopt either a cis or a trans conformation to bind Ag(I) ion through not only the terminal −CN and
thiophene functional groups but also the fulvene carbon atoms into organometallic coordination polymers
or discrete complexes. In addition, the luminescent properties of L1, L3, L5, and L7 and some of their
Ag(I) complexes were investigated preliminarily in EtOH and the solid state.