The proton conductivities of two silver ‐thiophene‐2‐carboxylate coordination polymer and the relationship between the dimensionality and properity

Two lower dimensional new silver(I) compounds have been obtained by replacing bidentate 2,5 ‐tpa with mono‐dentate tpa ligand in the reaction systems. In high humidity conditions, the dimensionality of coordination polymer has close relationship with the proton conductivity. Two 1D tpa complexes [Ag(tpa)(2 ‐apy)]n (1) and {[Ag(3 ‐apy)]·(tpa)·(H2O)}n (2) have been obtained from higher dimensional silver complex reaction systems and characterized. The complexes of1 and2 exhibit superprotonic conductivities with 3.27  × 10−2 S·cm−1 and 2.25  × 10−2 S·cm−1 respectively, in the same order of magnitude with that of the 1D 2,5 ‐tpa complex. The structures and topological analyses show the relative positions of substituents in neutral ligands affect the existence modes of tpa ligands, influencing the topological results and distributions of proton conduction sites, which do not affect the proton conductivities of the com plexes dramatically. Instead, the dimensionalities of the complexes are closely related to the proton conductivities, indicating that in high humidity, abundant hydrogen‐bond networks are formed in pores and between main frameworks of the proton conductive compounds and influence the performance.

Source: Applied Organometallic Chemistry - October 23, 2018 Category: Chemistry Authors: Jun Du, Xingyu Sun, Yuanchun He, Yang Yu, Xiaofeng Zheng, Laijin Tian, Zhe Liu Tags: FULL PAPER Source Type: research