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Synthesis, Structural Characterization, and Catalytic Property of A Zn(II) Complex with 5-Bromosalicylaldehyde Ligand

1College of Chemistry and Chemical Engineering, Weifang University, Weifang 261061, China

2College of Chemical Engineering, Qingdao University of Science and Technology, Qingdao 266061, China

3Department of Chemistry, Qinghai Normal University, Xining 810008, China

Received: 25 Dec 2016; Revised: 10 Mar 2017; Accepted: 10 Mar 2017; Available online: 27 Oct 2017; Published: 1 Dec 2017.
Editor(s): Dmitry Murzin
Open Access Copyright (c) 2017 by Authors, Published by BCREC Group under

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The study on catalytic activity of complex materials has been one of the hot spots in coordination  chemistry. In order to extensively study the catalytic activity of complexes, a new six-coordination Zn(II) complex material, [ZnL2(H2O)2] (C1) (HL = 5-bromosalicylaldehyde), has been prepared with 5-bromosalicylaldehyde, NaOH, and Zn(CH3COO)2·2H2O as raw materials. The structure of C1 was determined by elemental analysis, IR spectra, and single crystal X-ray diffraction. The Zn(II) complex shows a moderate catalytic activity for A3 coupling reaction of benzaldehyde, piperidine, and phenylacetylene with the benzaldehyde conversion reached 54.6 %. Furthermore, the Zn(II) complex catalyst exhibited 54.8 %, 53.8 %, and 54.4 % conversions of benzaldehyde in the second, third, and fourth cycles, respectively.  In addition, the Zn(II) complex features a selectivity of 100 % to the     product of propargylamine for the A3 coupling reaction. 

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Keywords: Zn(II) complex material; Synthesis; Structural characterization; Catalytic property; Ligand

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