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Z. Naturforsch. 2014,
69b, 299 – 304
doi:10.5560/ZNB.2014-3268
Assembly of Zn(II) Coordination Polymers Based on Tetrachloroterephthalate and Dipyridyl-type Ligands
Jiangsu Key Laboratory of Advanced Catalytic Materials and Technology, Changzhou University, Changzhou 213164, P. R. China
Reprint requests to Dr. Z.-H. Zhang or Prof. M.-Y. He. Fax: +8651986330251. E-mail:
zhangzhjpu@gmail.com (Z.-H. Zhang), hemingyangjpu@yahoo.com (M.-Y. He)
Received October 22, 2013 / published online March 17, 2014
2,3,5,6-Tetrachloroterephthalic acid (H2BDC-Cl4) has been selected for assembly with ZnII ions in the presence of the co-ligands 2,2-bipydrine (bipy) or 1,10-phenanthroline (phen). Through pH regulation, two coordination compounds were obtained at ambient temperature with the formula [Zn2(BDC-Cl4)(bipy)2(OAc)2(H2O)2] (1) and {[Zn(BDC-Cl4)(phen)2](CH3OH)(H2O)}n (2). Single-crystal X-ray analysis has indicated that complex 1 exhibits a binuclear coordination unit, while complex 2 is a wave-like polymeric chain. In both complexes, the anionic BDC-Cl4 ligands show bis-monodentate
bridging coordination in the trans-mode. Because of the introduction of the bipyridyl co-ligands, multiple hydrogen-bonding interactions and π-π interactions are formed in both complexes.
Key words: Tetrachloroterephthalic Acid, Zinc Coordination Compound, Crystal Structure