Synthesis, structure, DNA and protein binding studies, and cytotoxic activity of nickel(II) complexes containing 3,3-dialkyl/aryl-1-(2,4-dichlorobenzoyl)thiourea ligands
作者:N. Selvakumaran、N.S.P. Bhuvanesh、A. Endo、R. Karvembu
DOI:10.1016/j.poly.2014.03.010
日期:2014.6
A new series of nickel(II) complexes of the type [Ni(L)(2)] (1-6) has been synthesized by using the 3,3-dialkyliaryl-1-(2,4-dichlorobenzoyl)thiourea ligands, and characterized by analytical and spectral (NMR, FT-IR and UV-Vis) techniques. The structures of the ligands (HL1, HL2 and HL3) and complexes (2 and 5) have been confirmed by single crystal X-ray diffraction studies. The interaction of the nickel(II) complexes (2-5) with calf thymus (CT) DNA and bovine serum albumin (BSA) protein was investigated using UV-Vis and fluorescence spectroscopic methods. Absorption and emission spectral studies indicate that complex 2 interacts with CT DNA and BSA protein more strongly than the other complexes (3, 4 and 5). Complexes 2 and 5 exhibited good cytotoxicity against A549 and HT29 cell lines at 50 mu M concentration. (C) 2014 Elsevier Ltd. All rights reserved.