title: Two unprecedented NLO-active coordination polymers constructed by a semi-rigid tetrahedral linker.
abstract: The assemblies of tetrahedral linker tetrakis[4-(carboxyphenyl)oxamethyl]methane acid (H(4)L) with ZnCl(2) and CdBr(2) yield two noncentrosymmetric, NLO-active coordination polymers [Zn(4)(L(2))(H(2)O)(3)(DMA)].2H(2)O (1) and [Cd(2)L(DMA)(2)(H(2)O)(2)] (2), respectively. 1 has an unprecedented 2-fold interpenetrating sxa topology with ferroelectric properties, while 2 has a 7-fold interpenetrating dia network.
authors.affiliation: State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210093, China.
authors.forename: Li-Li
authors.initials: LL
authors.lastname: Liang
authors.forename: Shi-Bin
authors.initials: SB
authors.lastname: Ren
authors.forename: Jun
authors.initials: J
authors.lastname: Zhang
authors.forename: Yi-Zhi
authors.initials: YZ
authors.lastname: Li
authors.forename: Hong-Bin
authors.initials: HB
authors.lastname: Du
authors.forename: Xiao-Zeng
authors.initials: XZ
authors.lastname: You