Two 1D homochiral heterometallic chains: crystal structures, spectra, ferroelectricity and ferromagnetic properties
Open Access
- 14 February 2020
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in RSC Advances
- Vol. 10 (12) , 7004-7010
Abstract
Two new homo chiral Cu–Ln (Ln = Gd and Ho) compounds bearing a chiral Schiff base ligand (1R,3S)-N′,N′′-bis[3-methoxysalicylidene]-1,3-diamino-1,2,2-trimethylcyclopentane (H2L) have been synthesized and characterized by elemental analysis, IR spectroscopic and single-crystal X-ray diffraction techniques. The compounds were found to exhibit 1D zig-zag skeletons with double μ-1,5 bridging dicyanamide anions. Circular dichroism (CD) spectra have been used to verify their chiroptical activities. Magnetic studies suggest that 1 and 2 hold the same magnetic behavior with the dinuclear compounds presenting ferromagnetic interaction. Furthermore, both compounds show ferroelectricity with the remnant polarization (Pr) value of 0.23 and 0.18 μC cm−2 at room temperature, respectively.Keywords
Funding Information
- Natural Science Foundation of Shanghai Municipality (16ZR1411400, 17ZR1410600)
- National Natural Science Foundation of China (21361012, 21661016)
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