Homochiral 1D zinc-quitenine coordination polymer with a high dielectric constant

Yun Zhi Tang, Xue Feng Huang, Yu Mei Song, Philip Wai Hong Chan, Ren Gen Xiong

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Heat treatment of a solution of MeOH and water containing the quitenine ligand HQA [HQA = 6-methoxyl-(8S,9R)-cinchonan-9-ol-3-carboxylic acid] and ZnCl2 at 70°C to give the one-dimensional (1D) chain coordination polymer {(HQA)(ZnCl2)(2.5H2O)}n (1). The local coordination geometry around the zinc center in 1 displays a slightly distorted tetrahedron, with the HQA ligand adopting a zwitterionic moiety similar to that found in natural amino acids. Measurements on a powdered sample of 1 reveal a strong second-harmonic-generation response of ca. 20 times larger than that for KDP (KH2PO4). Notably, measurements on the dielectric properties of 1 showed that the 1D chain coordination polymer exhibited a dipolar chain relaxation process and a high dielectric constant (ε0 = 37.3).

Original languageEnglish
Pages (from-to)4868-4870
Number of pages3
JournalInorganic Chemistry
Issue number13
Publication statusPublished - 26 Jun 2006
Externally publishedYes

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