Synthesis, characterization and photoluminescence studies of new Cu(II) complex

ABSTRACT

In the current work, a new coordination complex, [Cu(HL)₂], 1 [H₂L = 2–((E)–(2–hydroxypropylimino)methyl)–4–nitrophenol] was successfully synthesized and characterized by IR, UV-vis and photoluminescence spectroscopic techniques, single crystal and powder X-ray diffraction measurements. In the crystalline structure of complex 1, the aliphatic –OH group of the ligand is not coordinated and points away from the metal coordination zone, and also actively participates in intermolecular bifurcated O−H···O hydrogen bonds which link the molecules to form hydrogen-bonded linear chains. C−H···π and π···π contacts also connect the molecules in the structure which form to 3D structure. This hydrogen bonded polymeric networks lie in the bc-plane and stacks along to the a-axis. Furthermore, complex 1 and its ligand H₂L display an intense navy-blue emission and blue emission in the solid state at room temperature, respectively, when they are excited under UV light.

KEYWORDS:

• Copper(II) complex
• crystal structure
• photoluminescence

Acknowledgements

The authors are grateful to Mugla Sitki Kocman University Research Projects Coordination Office (BAP-2016/052) for the financial support. The authors also acknowledge to Balikesir University, Science and Technology Application and Research Center (BUBTAM) for the use of the Photoluminescence Spectrometer.

Supplementary data

Crystallographic data for the structure reported in this article have been deposited with the Cambridge Crystallographic Data Centre (The Director, CCDC, 12 Union Road, Cambridge, CB2 1EZ, UK; [email protected]; www: http://www.ccdc.cam.ac.uk; and are available free of charge on request, quoting the Deposition No. CCDC 1513023.