A ferroelectric olefin–copper(I) organometallic polymer with flexible organic ligand (R)-MbVBP

•Hydrothermal synthesis of [(R)-MbVBP] and CuCl afforded a novel olefin–copper(I) coordination polymer.•The compound crystallized in a polar point group P21.•[(R)-H2MbVBP)2+(Cu6Cl8)2−] is ferroelectric which shows significant hysteresis loop.

Hydrothermal treatment of (R)-2-methyl-1,4-bis(4-vinylbenzyl)piperazine [(R)-MbVBP] and CuCl afforded a novel olefin–copper(I) coordination compound. Introducing the flexible ligand (R)-MbVBP allowed the olefin–copper(I) organometallic compound to crystallize in a polar point group P21. The compound was ferroelectric, and its electric hysteresis loop showed a remnant polarization (Pr) of 0.13–0.32 μC cm−2 and a coercive field (Ec) of 3.5–11 kV cm−1.

Graphical abstractHydrothermal treatment of (R)-2-methyl-1,4-bis(4-vinylbenzyl)piperazine [(R)-MbVBP] and CuCl afforded a novel olefin–copper(I) coordination compound [(R)-H2MbVBP)2+(Cu6Cl8)2−]. Introducing the flexible ligand (R)-MbVBP allowed the olefin–copper(I) organometallic compound to crystallize in a polar point group P21. The compound was ferroelectric and its electric hysteresis loop showed a remnant polarization (Pr) of 0.13–0.32 μC cm−2 and a coercive field (Ec) of 3.5–11 kV cm−1.Figure optionsDownload full-size imageDownload as PowerPoint slide