title: Ionic ferroelectrics based on nickel schiff base complexes.
abstract: Two novel homochiral enantiomers, trinuclear ionic clusters [(NiL(1))(2)Na](+)NCS(-).MeOH.Et(2)O (1) and [(NiL(2))(2)Na](+)NCS(-).MeOH.Et(2)O (2) [H(2)L(1) = N,N'-bis(3-methoxysalicylidene)-(1R,2R)-1,2-diphenylenediamine; H(2)L(2) = N,N'-bis(3-methoxysalicylidene)-(1S,2S)-1,2-diphenylenediamine], have been synthesized and structurally characterized. Both complexes have C(2) symmetry and crystallize in space group P2(1). Ferroelectric measurements reveal that complexes 1 and 2 represent a new type of ionic ferroelectric based on metal-organic coordination with a polarization value higher than that of KH(2)PO(4).
authors.affiliation: State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Nanjing National Laboratory of Microstructures, Nanjing University, Nanjing 210093, People's Republic of China. ysui@163.com
authors.forename: Yan
authors.initials: Y
authors.lastname: Sui
authors.forename: Dong-Ping
authors.initials: DP
authors.lastname: Li
authors.forename: Cheng-Hui
authors.initials: CH
authors.lastname: Li
authors.forename: Xin-Hui
authors.initials: XH
authors.lastname: Zhou
authors.forename: Tao
authors.initials: T
authors.lastname: Wu
authors.forename: Xiao-Zeng
authors.initials: XZ
authors.lastname: You