An Inorganic-Organic Hybrid MnIII{MnII6}2 Cluster Consisting of Rare Lindqvist-Like Mn6 Subunits with High Proton Conductivity

A new inorganic-organic hybrid {MnIII{MnII6}2 with rare Lindqvist-like Mn6 subunits was synthesized. Our studies reveal the distinct advantages of the {MnIII{MnII6}2 compound as a potential material of proton exchange membranes, including its facile and cost-effective synthesis, insolubility in water, and most importantly, the maximum proton conductivity with a value of 1.19×10-3 S cm-1 at 338 K and 97% RH.