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One-dimensional coordination polymer of copper(I) thiocyanate with the Schiff base ligand N,N′-bis(3,4-dimethoxybenzylidene)butane-1,4-diamine: synthesis, crystal structure, spectroscopic and thermal properties

Abstract

A new one-dimensional polymeric copper(I)–thiocyanate complex with the Schiff base ligand N,N′-bis(3,4-dimethoxybenzylidene)butane-1,4-diamine, {Cu2((μ N,N′ -3,4-MeO-ba)2bn)(μ1,3-NCS)2} n , was synthesized and characterized by elemental analysis, 1H and 13C NMR, FT–IR spectroscopy, and thermal analysis. The thermal behavior of the complex was studied using thermogravimetry in order to evaluate thermal stability and thermal decomposition pathways. The molecular structure of the complex was determined by single-crystal X-ray diffraction which revealed that the coordination geometry around the copper(I) ion is distorted trigonal. The Schiff base ligand (3,4-MeO-ba)2bn acts as a bis-monodentate and bridging ligand (μ N,N′ ) and coordinates via two N atoms to the metal centers and adopts an E,E conformation. The coordination spheres of the metal atoms are completed by the N and S atoms from two thiocyanate anion bridges (μ1,3-NCS), forming a zigzag chain propagating along [001].

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Acknowledgments

We acknowledge Golestan University for partial support of this work, and the University of Burdwan for TG/DTG.

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Correspondence to Aliakbar Dehno Khalaji.

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Khalaji, A.D., Stoeckli-Evans, H. & Das, D. One-dimensional coordination polymer of copper(I) thiocyanate with the Schiff base ligand N,N′-bis(3,4-dimethoxybenzylidene)butane-1,4-diamine: synthesis, crystal structure, spectroscopic and thermal properties. Monatsh Chem 143, 595–600 (2012). https://doi.org/10.1007/s00706-011-0627-y

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Keywords

  • One-dimensional
  • Copper(I) thiocyanate
  • Schiff base
  • X-ray diffraction
  • Spectroscopy