Issue 17, 2012
From the journal:

CrystEngComm

Metal–organic frameworks built from achiral cyclohex-1-ene-1,2-dicarboxylate: syntheses, structures and photoluminescence properties††

Yun Gong,a   Tao Wu,a   Jianhua Lin*a  and  Baoshan Wangb  

* Corresponding authors

a Department of Chemistry, College of Chemistry and Chemical Engineering, Chongqing University, Chongqing, P. R. China
E-mail: jhlin@cqu.edu.cn, jhlin@pku.edu.cn
Tel: +86-023-65102316

b Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, P. R. China

Abstract

Using achiral ligand cyclohex-1-ene-1,2-dicarboxylic acid (H2L), in the presence or absence of N-donor coligands, five metal(II) complexes formulated as Zn(L)(4,4′-bpy)·H2O (1), Cu(L)(4,4′-bpy)0.5 (2), Cd2(L)2(phen)2(H2O)2·3H2O (3), Zn5(L)4(μ3-OH)2(H2O)2 (4) and Cd(L)(H2O) (5) have been synthesized and structurally characterized by single-crystal X-ray diffractions. Complex 1 shows a homochiral network based on novel twisted hexanuclear cyclic units, which are fused by sharing metal ions into a 3D framework. Complex 2 exhibits a 2D framework constructed by 1D chain linked by 4,4′-bpy. 4,4′-bpy exhibits twisted and planar conformations in complexes 1 and 2. In complex 3, alternating 1D left-handed and right-handed helical chains are observed. Complexes 4 and 5 display different 2D frameworks based on a Zn5 unit and Cd–O–Cd infinite linkage, respectively. Complex 1 shows a strong CD signal, and complexes 4–5 are achiral. The twisted 4,4-bpy plays an important role in the formation of the chiral complex 1. The five complexes show different absorption and photoluminescence properties as well as different thermal stabilities.

Graphical abstract: Metal–organic frameworks built from achiral cyclohex-1-ene-1,2-dicarboxylate: syntheses, structures and photoluminescence properties

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Article information

DOI
https://doi.org/10.1039/C2CE06415D
Article type
Paper
Submitted
24 Oct 2011
Accepted
25 Apr 2012
First published
12 Jul 2012

CrystEngComm, 2012,14, 5649-5656

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Metal–organic frameworks built from achiral cyclohex-1-ene-1,2-dicarboxylate: syntheses, structures and photoluminescence properties

Y. Gong, T. Wu, J. Lin and B. Wang, CrystEngComm, 2012, 14, 5649 DOI: 10.1039/C2CE06415D

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