Ligand-Directed and pH-Controlled Assembly of Chiral 3d-3d Heterometallic Metal-Organic Frameworks

被引：145

作者：

Su, Zhi ^{[1
]}

Fan, Jian ^{[1
]}

Okamura, Taka-aki ^{[2
]}

Sun, Wei-Yin ^{[1
]}

Ueyama, Norikazu ^{[2
]}

机构：

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

[2] Osaka Univ, Dept Macromol Sci, Grad Sch Sci, Toyonaka, Osaka 5600043, Japan

来源：

CRYSTAL GROWTH & DESIGN | 2010年 / 10卷 / 08期

基金：

中国国家自然科学基金;

关键词：

COORDINATION POLYMERS; ABSOLUTE HELICITY; BUILDING-BLOCKS; WATER; NETS; FERROELECTRICITY; ARCHITECTURES; COEXISTENCE; MOLECULES; TOPOLOGY;

D O I：

10.1021/cg100418a

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Use of unsymmetric ligand 1,2,4-benzenetricarboxylic acid (1,2,4-H3BTC) and controlling the reaction pH value enabled isolation of two novel chiral 3d-3d heterometallic complexes [Zn2Co(tib)(3)(H2O)(5)][Zn-6(tib)(2)(1,2,4-BTC)(6)]center dot 12.7H(2)O (1) and [ZnCo(tib)(1,2,4-BTC)(H2O)(2)]Cl center dot 3H(2)O (2) [tib = 1,3,5-tris(1-imidazolyl)benzene]. Comparative study revealed that the use of symmetric ligand 1,3,5-benzenetricarboxylic acid (1,3,5-H3BTC) resulted one achiral 3d-3d heterometallic complex [ZnCo(tib)(1,3,5-BTC)Cl] (3) with 3D structure. Complex 1 is a 2D network with cationic and anionic layers arranged alternately, while 2 is a 3D framework with rare ID helical water chains. Furthermore, complex 1 displays ferroelectric behavior with a remnant electric polarization (P-r) of similar to 0.177 mu C/cm2 and an electric coercive field (E-c) of similar to 17.68 kV/cm.

引用

页码：3515 / 3521

页数：7

共 66 条

[21] Single-ion magnets based on mononuclear lanthanide complexes with chiral Schiff base ligands [Ln(FTA)3L] (Ln = Sm, Eu, Gd, Tb and Dy) [J].