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Molecules 2007, 12(4), 821-831; doi:10.3390/12040821
Article

Different Supramolecular Coordination Polymers of [N,N'-di(pyrazin-2-yl)-pyridine-2,6-diamine]Ni(II) with Anions and Solvent Molecules as a Result of Hydrogen Bonding

1 and 1,*
1 Institute of Organic and Polymeric Materials, National Taipei University of Technology, Taipei 106, Taiwan 2 Instrumentation Center, National Taiwan University, Taipei 106, Taiwan
* Author to whom correspondence should be addressed.
Received: 15 March 2007 / Revised: 18 April 2007 / Accepted: 19 April 2007 / Published: 23 April 2007
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Abstract

Ni(II) complexes of N,N'–di(pyrazin–2–yl)pyridine–2,6–diamine (H2dpzpda) with different anions were synthesized and their structures were determined by X-ray diffraction. Hydrogen bonds between the amino groups and anions assembled the mononuclear molecules into different architectures. The perchlorate complex had a 1-D chain structure, whereas switching the anion from perchlorate to nitrate resulted in a corresponding change of the supramolecular structure from 1-D to 3-D. When the nitrate complex packed with the co-crystallized water, a double chain structure was formed through hydrogen bonding. The magnetic studies revealed values of g = 2.14 and D = 3.11 cm-1 for [Ni(H2dpzpda)2](ClO4)2 (1) and g = 2.18 and D = 2.19 cm-1 for [Ni(H2dpzpda)2](NO3)2 (2), respectively.
Keywords: Coordination polymer; metal-organic framework; hydrogen bond; X-ray crystal structure Coordination polymer; metal-organic framework; hydrogen bond; X-ray crystal structure
This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

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Lee, G.-H.; Wang, H.-T. Different Supramolecular Coordination Polymers of [N,N'-di(pyrazin-2-yl)-pyridine-2,6-diamine]Ni(II) with Anions and Solvent Molecules as a Result of Hydrogen Bonding. Molecules 2007, 12, 821-831.

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