Synthesis, structure, and properties of nickel(II) and copper(II) coordination polymers with the 5-ethyl-pyridine-2,3-dicarboxylate ligand
Author:
Tang Long1, Wang YingLu1, Yin SiYu1, Shi DeQian1, Wang JiJiang1, Wang Xiao1
Affiliation:
1. Department of Chemistry and Chemical Engineering, Yan’an University Key Laboratory of New Energy & New Functional Materials, Shaanxi Key Laboratory of Chemical Reaction Engineering , Yan’an University , Yan’an 716000 , P.R. China
Abstract
Abstract
The reactions of Ni(NO3)2 · 6H2O/Cu(OAc)2 · H2O, 5-ethyl-pyridine-2,3-dicarboxylic acid (H2epda), and 2,2′-bipyridine (2,2′-bipy) under hydrothermal condition produced two new coordination polymers [Ni(Hepda)2(H2O)2] (1) and [Cu(epda)(2,2′-bipy)] (2), which were characterized by elemental analysis, infrared spectroscopy, thermogravimetric analysis, and single-crystal X-ray diffraction. In 1, each NiII center is six-coordinated in a distorted NiO4N2 octahedral geometry. Adjacent structural units are joined by strong intermolecular O–H · · · O hydrogen bonding to generate a layered structure. In 2, the CuII centers are bridged by epda dianions to form chains, where the 2,2′-bipy ligands bristle out on two sides, establishing π-π stacking interactions, Adjacent chains are thus aggregated in layers. The magnetic properties of 1 and 2 were investigated, and the exchange interactions were found to be −1.62 and −2.24 cm−1, respectively.
Funder
National Natural Science Foundation of China Natural Scientific Research Foundation of Yan’an City Technology Division of China National College Students’ innovation and entrepreneurship training program
Publisher
Walter de Gruyter GmbH
Subject
General Chemistry
Reference19 articles.
1. Y. P. Wu, W. Zhou, J. Zhao, W. W. Dong, Y. Q. Lan, D. S. Li, C. H. Sun, X. H. Bu, Angew. Chem. Int. Ed.2017, 56, 13001. 2. X. L. Wang, Y. Xiong, X. T. Sha, G. C. Liu, H. Y. Lin, Cryst. Growth Des.2017, 17, 483. 3. J. Jiang, H. Furukawa, Y. B. Zhang, O. M. Yaghi, J. Am. Chem. Soc.2016, 138, 10244. 4. L. Tang, F. Fu, J. J. Wang, L. J. Gao, D. D. Chao, Z. Wang, Polyhedron2015, 88, 116. 5. S. Kitagawa, K. Uemura, Chem. Soc. Rev.2005, 34, 109.
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