Characterization and biological activities of two copper(II) complexes with dipropylenetriamine and diamine as ligands

Spectrochim Acta A Mol Biomol Spectrosc. 2014 Jun 5:127:225-30. doi: 10.1016/j.saa.2014.02.016. Epub 2014 Feb 22.

Abstract

Two new mixed-ligand copper(II) complexes, [Cu(dipn)(NN)]Br2(1-2) [dipn=dipropylenetriamine, NN=ethylenediamine (en) (1) and propylenediamine (pn) (2)], have been synthesized. These complexes were characterized by spectroscopic and thermal techniques. Crystal structure for 2 shows a distorted trigonal-bipyramidal geometry around Cu(II) ion with one solvate water molecule. Antimicrobial and antiproliferative assays were conducted to evaluate the biological activities of these complexes. The complexes exhibit a promising antimicrobial effect against an array of microbes at 200μg/mL concentration. The antiproliferative assay shows a high potential of these complexes to target Human keratinocyte cell line with IC50 values of 155 and 152μM. The absorption spectrum of 2 in water was modeled by time-dependent density functional theory (TD-DFT).

Keywords: Biological activity; Cu(II) complexes; Polyamine ligands; Single-crystal XRD.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Anti-Infective Agents* / chemistry
  • Anti-Infective Agents* / pharmacology
  • Bacteria / growth & development*
  • Cell Proliferation / drug effects*
  • Copper* / chemistry
  • Copper* / pharmacology
  • Crystallography, X-Ray
  • Diamines* / chemistry
  • Diamines* / pharmacology
  • Humans
  • Imines* / chemistry
  • Imines* / pharmacology
  • Keratinocytes / cytology
  • Keratinocytes / metabolism*
  • Molecular Structure

Substances

  • Anti-Infective Agents
  • Diamines
  • Imines
  • Copper