An inorganic–organic hybrid MnIII{Mn II6}2 cluster consisting of rare Lindqvist-like Mn6 subunits with high proton conductivity

Abstract

A new inorganic–organic hybrid Mn^III{Mn^II₆}₂ with rare Lindqvist-like Mn₆ subunits was synthesized. Our studies reveal the distinct advantages of the Mn^III{Mn^II₆}₂ compound as a potential material of proton exchange membranes, including its facile and cost-effective synthesis, insolubility in water, and most importantly, its maximum proton conductivity of 4.69 × 10⁻³ S cm⁻¹ at 368 K and 97% RH.