A novel ferroelectric based on quinuclidine derivatives

The compound [(CH_3)_2 CH-C_3 H_(17) N][CoBr_4](1) based on quinuclidine derivatives was achieved by the solution synthetic method and characterized by elemental analysis,infrared spectroscopy,single-crystal X-ray structural analysis and dielectric measurement,respectively.Variable-temperature single-crystal X-ray diffraction suggested that the compound unde rwent the phase transition from the space group C2/c to Cc.The polarization curve was measured using the Sawyer-Tower circuit.The structural phase transitions of 1 was ascribed to the distortion of a [(CH_3)_2 CH-C_3 H_(17)N]~(2+) cation from this inorganicorganic hybrid material [(CH_3)_2 CH-C_3 H_(17)N][CoBr_4].The strong change in dielectric anomalies makes compound 1 a suitable candidate for promising switchable dielectric materials.This work represents a feasible strategy thought for the targeted harvesting of low temperature ferroelectrics.