Homochiral ferroelectric three-dimensional cadmium(II) frameworks from racemic camphoric acid and 3,5-di(imidazol-1-yl)benzoic acid

被引：16

作者：

Su, Zhi ^{[1
]}

Lv, Gao-Chao ^{[1
]}

Fan, Jian ^{[1
]}

Liu, Guang-Xiang ^{[1
]}

Sun, Wei-Yin ^{[1
]}

机构：

[1] Nanjing Univ, Sch Chem & Chem Engn, Inst Coordinat Chem, State Key Lab Coordinat Chem,Nanjing Natl Lab Mic, Nanjing 210093, Peoples R China

来源：

INORGANIC CHEMISTRY COMMUNICATIONS | 2012年 / 15卷

基金：

中国国家自然科学基金;

关键词：

Hydrothermal synthesis; Racemic camphoric acid; Homochiral cadmium(II) framework; SHG; Ferroelectric property; METAL-ORGANIC FRAMEWORKS; SPONTANEOUS RESOLUTION; TRIPODAL LIGANDS; COMPLEXES; CHIRALITY; CHAINS; UNITS;

D O I：

10.1016/j.inoche.2011.11.015

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

Two three-dimensional (3D) chiral frameworks, [Cd-6(L)(4)(D-Cam)(4)(H2O4)center dot 2H(2)O (1D) and [Cd-6(L)(4)(L-Cam)(4) (H2O)(4))center dot 2H(2)O (1L) [HL = 3,5-di(imidazol-1-yl)benzoic acid, D-H(2)Cam= D-camphoric acid, r-H(2)Cam=L-camphoric acid], have been synthesized under hydrothermal conditions, which represent a nice example of enantioselectivity of organic racemic ligands (DL-camphorates) during the self-assembly process and formation of the metal complexes. Compounds 1D and 1L feature 3D framework with chiral chains constructed by Cd(II) cations and camphorate anions. Solid-state circular dichroism (CD) spectra of 1D and 1L revealed that they are enantiomers. Furthermore, the complex with chiral C2 space group displays ferroelectric behavior with a remnant electric polarization (P-r) of similar to 0.140 mu C/cm(2) and an electric coercive field (E,) of similar to 17.11 kV/cm. (C) 2011 Elsevier B.V. All rights reserved.

引用

页码：317 / 320

页数：4

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