Issue 3, 2010
From the journal:

CrystEngComm

Roles of halide anions in the structural diversity of Zn(ii) complexes containing the flexible N,N′-di(4-pyridyl)adipoamide ligand†

Yi-Fen Hsu,a   Wayne Hsu,b   Chia-Jun Wu,a   Pei-Chi Cheng,a   Chun-Wei Yeh,a   Wen-Jung Chang,c   Jhy-Der Chen*a  and  Ju-Chun Wangb  

* Corresponding authors

a Department of Chemistry, Chung-Yuan Christian University, Chung-Li, Taiwan, R.O.C
E-mail: jdchen@cycu.edu.tw

b Department of Chemistry, Soochow University, Taipei, Taiwan, R. O. C.

c Department of Chemistry, National Central University, Chung-Li, Taiwan, R.O.C.

Abstract

A series of Zn(II) complexes with N,N′-di(4-pyridyl)adipoamide ligands, {[ZnX2(L)]·H2O}∞ (X = Cl, 1, Br, 2 and I, 3; L = N,N′-di(4-pyridyl)adipoamide), [Zn2X4(L)2]·2DMF (X = Cl, 4 and Br, 5) and [Zn2I4(L)2]·4DMF·C4H10O, 6, were prepared and their structures determined by X-ray crystallography. Complexes 1 and 2 form double-stranded helical chains which are supported by the N–H⋯O and O–H⋯X hydrogen bonds involving the guest water molecules and the halide anions, whereas 3 shows sinusoidal chains which are interlinked by the N–H⋯O hydrogen bonds and π–π interactions. Complexes 1–3 represent a unique example that the halide anions show significant effect on folding and unfolding of the Zn(II) double-stranded helical coordination polymers. Complexes 1–3 can be transformed to the corresponding complexes 4–6, which are dinuclear with 34-membered metallocycles. In these complexes, the chloride and bromide anions play the same role in the crystal structures, while the iodide anion is distinct.

Graphical abstract: Roles of halide anions in the structural diversity of Zn(ii) complexes containing the flexible N,N′-di(4-pyridyl)adipoamide ligand

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Article information

DOI
https://doi.org/10.1039/B918484H
Article type
Paper
Submitted
08 Sep 2009
Accepted
06 Jan 2010
First published
27 Jan 2010

CrystEngComm, 2010,12, 702-710

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Roles of halide anions in the structural diversity of Zn(II) complexes containing the flexible N,N′-di(4-pyridyl)adipoamide ligand

Y. Hsu, W. Hsu, C. Wu, P. Cheng, C. Yeh, W. Chang, J. Chen and J. Wang, CrystEngComm, 2010, 12, 702 DOI: 10.1039/B918484H

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