Abstract
N,N-Dimethylpyrrolidinium hydroxide (P11OH·4H2O) was found to exhibit high ionic conductivity in the solid state (7 × 10−3 S cm−1 at 25 °C) and unusual thermal properties, and 2H solid state NMR measurements indicate liquid-like mobility of the deuterium species in the solid state of P11OD·4.5D2O.