Four Novel Zn (II) Coordination Polymers Based on 4'-Ferrocenyl-3,2':6',3''-Terpyridine: Engineering a Switch from 1D Helical Polymer Chain to 2D Network by Coordination Anion Modulation

Lufei Xiao; Dajun Wu; Xuchun Wang; Wei Du; Jun Zhang; Shengli Li; Hongping Zhou; Jieying Wu; Yupeng Tian

doi:10.3390/ma10121360

Four Novel Zn (II) Coordination Polymers Based on 4'-Ferrocenyl-3,2':6',3''-Terpyridine: Engineering a Switch from 1D Helical Polymer Chain to 2D Network by Coordination Anion Modulation

Materials (Basel). 2017 Nov 27;10(12):1360. doi: 10.3390/ma10121360.

Authors

Lufei Xiao^{1

2}, Dajun Wu³, Xuchun Wang⁴, Wei Du⁵, Jun Zhang⁶, Shengli Li⁷, Hongping Zhou⁸, Jieying Wu⁹, Yupeng Tian^{10

11}

Affiliations

¹ Department of Chemistry, Key Laboratory of Chemistry for Inorganic/Organic Hybrid Functionalized Materials of Anhui Province, Anhui University, Hefei 230601, China. xlf3345@163.com.
² Department of Food and Environmental Engineering, Chuzhou Vocational and Technical College, Chuzhou 239000, China. xlf3345@163.com.
³ Department of Chemistry, Key Laboratory of Chemistry for Inorganic/Organic Hybrid Functionalized Materials of Anhui Province, Anhui University, Hefei 230601, China. djwu0926@163.com.
⁴ Department of Chemistry, Key Laboratory of Chemistry for Inorganic/Organic Hybrid Functionalized Materials of Anhui Province, Anhui University, Hefei 230601, China. wangxc@ahstu.edu.cn.
⁵ Department of Chemistry, Key Laboratory of Chemistry for Inorganic/Organic Hybrid Functionalized Materials of Anhui Province, Anhui University, Hefei 230601, China. duwei1247@163.com.
⁶ Department of Chemistry, Key Laboratory of Chemistry for Inorganic/Organic Hybrid Functionalized Materials of Anhui Province, Anhui University, Hefei 230601, China. zhangjun@ahjzu.edu.cn.
⁷ Department of Chemistry, Key Laboratory of Chemistry for Inorganic/Organic Hybrid Functionalized Materials of Anhui Province, Anhui University, Hefei 230601, China. lsl1968@ahu.edu.cn.
⁸ Department of Chemistry, Key Laboratory of Chemistry for Inorganic/Organic Hybrid Functionalized Materials of Anhui Province, Anhui University, Hefei 230601, China. zhpzhp@263.net.
⁹ Department of Chemistry, Key Laboratory of Chemistry for Inorganic/Organic Hybrid Functionalized Materials of Anhui Province, Anhui University, Hefei 230601, China. jywu1957@163.com.
¹⁰ Department of Chemistry, Key Laboratory of Chemistry for Inorganic/Organic Hybrid Functionalized Materials of Anhui Province, Anhui University, Hefei 230601, China. yptian@ahu.edu.cn.
¹¹ State Key Laboratory of Coordination Chemistry, Nanjing University, Nanjing 210093, China. yptian@ahu.edu.cn.

Abstract

Four novel Zn^II coordination polymers, [(ZnCl₂)₂(L)₂]_n (1), [(ZnBr₂)₂(L)₂]_n (2), and [(ZnI₂)₂(L)₂]_n (3) and {[Zn(SCN)₂]_1.5(L)₃}_n (4), have been synthesized based on 4'-ferrocenyl-3,2':6',3''-terpyridine with Zn^II ions and different coordination anions under similar ambient conditions. Their structures have been confirmed using single crystal X-ray diffraction analysis, showing that complexes 1-3 are one-dimensional (1D) double-stranded metal ion helical polymer chains and complex 4 is of a two-dimensional (2D) network. The structural transformations of them from a 1D polymer chain to a 2D network under the influence of the coordination anions has been systematic investigated. Furthermore, the optical band gaps have been measured by optical diffuse reflectance spectroscopy, revealing that the ligand and the complexes should have semiconductor properties.

Keywords: 3,2′:6′,3′′-terpyridine; ZnII ion; coordination anion; coordination polymer; crystal structure.