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


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.


Copper(II) complex Chromotropism Halochromism Mononuclear complex 



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)


  1. 1.
    W. Linert. Y. Fukuda, A. Camard, Coord. Chem. Rev. 218, 113–152 (2001)CrossRefGoogle Scholar
  2. 2.
    Y. Fukuda, Inorganic chromotropism Springer, Berlin, 2007CrossRefGoogle Scholar
  3. 3.
    C.F. Zhu, A.B. Wu, Thermochim. Acta 425, 7–12 (2005)CrossRefGoogle Scholar
  4. 4.
    A. Hamberger, A.M. Popa, R.M. Rossi, D.R. Kattnig, D. Hinderberger, K. Landfester, D. Crespy, J. Mater. Chem. 22, 9909–9920 (2012)CrossRefGoogle Scholar
  5. 5.
    V.N. Khrustalev, S.O. Kostenko, M.I. Buzin, A.A. Korlyukov, Y.V. Zubavichus, M.A. Kurykin, M.Y. Antipin, Inorg. Chem. 51, 10590–10602 (2012)CrossRefGoogle Scholar
  6. 6.
    H. Golchoubian, L. Rostami, J. Coord. Chem. 70, 3660–3676 (2017)CrossRefGoogle Scholar
  7. 7.
    L. Stryer, Biochemistry, 3rd Ed. New York: Freeman; 1988Google Scholar
  8. 8.
    F. Cheng, N. Tang, J. Chen, F. Wang, L. Chen, Inorg. Chem. Commun. 14, 852–855 (2011)CrossRefGoogle Scholar
  9. 9.
    P. Bamfield, Chromic phenomena: technological applications of color chemistry Springer, Berlin, 2002, p. 8Google Scholar
  10. 10.
    H. Golchoubian, E. Rezaee, G. Bruno, H.A. Rudbari, Inorg. Chim. Acta 366, 290–297 (2011)CrossRefGoogle Scholar
  11. 11.
    H. Golchoubian, R. Samimi, Polyhedron 128, 68–75 (2017)CrossRefGoogle Scholar
  12. 12.
    H. Golchoubian, M. Tarahomi, E. Rezaee, G. Bruno, Polyhedron 85, 635–642 (2015)CrossRefGoogle Scholar
  13. 13.
    SAINT, Software for the CCD Detector System, (version 7.06A), Bruker AXS (Inc, Madison, Wisconsin, 2005)Google Scholar
  14. 14.
    M.C. Burla, R. Caliandro, M. Camalli, B. Carrozzini, G.L. Cascarano, L. De Caro, C. Giacovazzo, G. Polidori, R. Spagna, J. Appl. Cryst. 38, 381–388 (2005)CrossRefGoogle Scholar
  15. 15.
    G.M. Sheldrick, SHELXL-2014/7: program for the solution of crystal structures (University of Göttingen, Göttingen, 2014)Google Scholar
  16. 16.
    G.M. Sheldrick, Acta Cryst. C71, 3–8 (2015)Google Scholar
  17. 17.
    A.W. Addison, T.N. Rao, J. Reedijk, J. van Rijn, G.C. Verschoor, J. Chem. Soc. Dalton Trans. 1349–1356 (1984)Google Scholar
  18. 18.
    S.Q. Bai, E.Q. Gao, Z. He, C.J. Fang, C.H. Yan, New J. Chem. 29, 935–941 (2005)CrossRefGoogle Scholar
  19. 19.
    T. Pandiyan, H.J. Guadalupe, J. Cruz, S. Bernès, V.M. Ugalde-Salvdivar, Eur. J. Inorg. Chem. 21, 3274–3285 (2008)CrossRefGoogle Scholar
  20. 20.
    Cambridge Structural Database System, Cambridge Crystallographic Data Centre, University Chemical Laboratory, Cambridge, UKGoogle Scholar
  21. 21.
    C. Tsiamis, M. Themeli, Inorg. Chim. Acta 206, 105–115 (1993)CrossRefGoogle Scholar
  22. 22.
    W.J. Geary, Coord. Chem. Rev. 7, 81–122 (1971)CrossRefGoogle Scholar
  23. 23.
    C.J. Williams, H. Morris, J. Svorec, M. Valková, M. Valko, J. Moncol, M. Mazur, F. Valach, M. Melnik, J. Mol. Struct. 659, 53–60 (2003)CrossRefGoogle Scholar
  24. 24.
    V. Sakaguchi, A.W. Addison, J. Chem. Soc. Dalton Trans. 600–608 (1979)Google Scholar
  25. 25.
    J. Losada, I. Del Peso, L. Beyer, Inorg. Chim. Acta 321, 107–115 (2001)CrossRefGoogle Scholar
  26. 26.
    D. Kivelson, R. Neiman, J. Chem. Phys. 35, 149–155 (1961)CrossRefGoogle Scholar

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

Personalised recommendations