Anion-dependent assembly of diverse 1D-3D silver(I) coordination networks with a thioether ligand

作者：Xiong, Hangxing; Li, Li; Liu, E.; Yang, Chengxiong; Zhang, Yuan Zhuo; Fettinger, James C.; Zhang, Guoqi^*

来源：Polyhedron, 2017, 123: 226-233.

DOI：10.1016/j.poly.2016.11.043

• Thioether
• Silver
• Anion effect
• Coordination network
• Crystal structure

A flexible thioether ligand, 1,3-bis(methylthiomethyl)benzene (L) has been employed to prepare supramolecular assemblies with silver salts of various anions such as NO3-, BF4-, PF6- and SbF6-. X-ray structural analysis reveals that even though the same metal ion (Ag+) and ligand (L) were used to react under the same conditions, anions have played a critical role in driving the variation of metal-ligand binding modes as well as network topologies of the resultant coordination polymers. The reaction of L with silver nitrate resulted in a 2-D coordination network 1, composed of metallomacrocycles bridged with NOi ions. A 3-D framework 2 was observed when silver tetrafluoroborate was used. Although BF I ions were not involved in coordinating with metal centers, the participation of water molecules led to a different metal-ligand binding mode and hence the formation of a network with higher dimension. The large, non -coordinating anion PFg was found to be responsible for the assembly of a 2-D grid-like network 3, in which interesting 4+4 metallocycles occupied with PFg ions were disclosed. However, the presence of a larger anion analog, SbF6- simplified the network structure to form a 1-D helical chain (4) through the coordination of solvent molecules (CH3CN) with silver(I) centers.

• 出版日期2017-2-17
• 单位荆楚理工学院