Reversible ferroelectric phase transition of 1,4-diazabicyclo [2,2,2]octane N,N′-dioxide di(perchlorate)

1,4-Diazabicyclo [2,2,2]octane N,N′-dioxide di(perchlorate) with ferroelectric behavior at low temperature phase was synthesized and separated as colorless block crystals. Crystallographic analysis showed that it belonged to chiral space group P21 with ferroelectric behaviors, and a typical ferroelectric feature of electric hysteresis loop was obtained in the low temperature phase.94