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Original Articles

Synthesis, characterization, crystal structure, and electrochemical properties of three copper(II) complexes with 3,5-dihalosalicylaldehyde Schiff bases derived from amantadine

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Pages 2295-2309 | Received 02 Apr 2019, Accepted 26 Jul 2019, Published online: 27 Aug 2019
 

Abstract

Complexes 1-3, C34H36X4CuN2O2 (X = Cl, Br, I), were synthesized with copper chloride dihydrate and three new Schiff base ligands derived from amantadine and 3,5-dihalosalicylaldehydes. They were characterized by IR, UV–VIS, elemental analysis, molar conductance, and single-crystal X-ray diffraction. Single-crystal X-ray diffraction analysis reveals that 1 and 2 crystallize in the triclinic system, Pī space group. Each asymmetric unit consists of one copper(II) ion, two corresponding deprotonated Schiff base ligands and one lattice dichloromethane molecule. 3 crystallizes in the monoclinic system, P21/n space group. Each asymmetric unit consists of one copper(II) ion and two deprotonated iodo- Schiff base ligands. The tetra-coordination of the central copper(II) ion in 1-3 is constructed by two nitrogen atoms and two oxygen atoms from the corresponding Schiff base ligands, forming a distorted tetrahedral geometry. Electrochemical properties of the complexes were determined by cyclic voltammetry.

Additional information

Funding

This work was financially supported by Foundation of Liaoning Provincial Department of Education Innovation Team Projects (grant number LT2017010); the Cause of Public Welfare Scientific Research Fund (grant number 2015005008); Shenyang Science and Technology Plan Project (grant number F13-289-1-00); Liaoning University's College Students Innovation and Entrepreneurship Training Program (grant number x201610140158).

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