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Journal of the Iranian Chemical Society

, Volume 16, Issue 5, pp 1041–1052 | Cite as

Mononuclear copper(II) complexes containing chelating ligand of 2-methyl-N-(pyridine-2-yl-methyl)propane-2-amine as chromotropic probes

  • Roya Nazari
  • Hamid GolchoubianEmail author
  • Giuseppe Bruno
Original Paper
  • 25 Downloads

Abstract

The synthesis of two mononuclear copper(II) complexes of formula [L2CuX]X where L is a bidentate ligand of N-(pyridin-2-yl-methyl)propane-2-amine and X = Cl, 1 and Br, 2, is reported. Both complexes are fully characterized by elemental analysis, spectroscopic techniques (IR, UV–Vis, and EPR), thermal analysis, conductance measurements, and single-crystal X-ray structure determination. The structures of both complexes are similar and display a distorted square–pyramidal arrangement around copper(II) ion. The chromotropism behavior of the complexes, including thermo- and halochromism, was investigated. The complexes demonstrated strongly pronounced reversible thermochromism in solution due to dissociation and re-coordination of halide and bidentate ligands. Their halochromism was investigated in pH range of 3.0–11.0 by visible absorption spectroscopy. Their reversible color variations from blue to colorless attributed to the deprotonation and protonation of the bidentate ligands.

Keywords

Copper(II) complex Chromotropism Halochromism Mononuclear complex 

Notes

Acknowledgements

We are grateful for the financial support of the University of Mazandaran of the Islamic Republic of Iran.

Supplementary material

13738_2018_1577_MOESM1_ESM.pdf (137 kb)
Supplementary material 1 (PDF 136 KB)
13738_2018_1577_MOESM2_ESM.cif (1.2 mb)
Supplementary material 2 (CIF 1213 KB)
13738_2018_1577_MOESM3_ESM.cif (1.4 mb)
Supplementary material 3 (CIF 1383 KB)

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Copyright information

© Iranian Chemical Society 2019

Authors and Affiliations

  • Roya Nazari
    • 1
  • Hamid Golchoubian
    • 1
    Email author
  • Giuseppe Bruno
    • 2
  1. 1.Department of ChemistryUniversity of MazandaranBabol-sarIran
  2. 2.Dipartimento di Chimica InorganicaUniversità di MessinaMessinaItaly

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