Synthesis of Multinuclear Zn(II) Complexes Involving 8-Aminoquinoline- Based Schiff-Base Ligand: Structural Diversity, DNA Binding Studies and Theoretical Calculations
authors Ghorai, P; Brandao, P; Bauza, A; Frontera, A; Saha, A
nationality International
journal CHEMISTRYSELECT
author keywords Corner-defective Cubane; DFT analysis; DNA binding; Schiff base; Spectroscopic studies
keywords SINGLE-MOLECULE MAGNET; CRYSTAL-STRUCTURES; METAL-COMPLEXES; IN-VITRO; COPPER(II) COMPLEXES; ZINC(II) COMPLEXES; CU(II) COMPLEXES; HIGH-NUCLEARITY; DONOR LIGANDS; CLEAVAGE
abstract Four novel Zn(II) complexes [Zn2L2X2] (1), [Zn4L4X(OH)(OH2)][ZnX4]H2OCH3OH (2,3) and [Zn4L4X(OH)(OH2)](N(CN)(2))(NO3) 2H(2)OCH(3)OH (4) [where HL=(E)-2-methoxy-6-((quinolin-8-ylimino)methyl)phenol and X= N-3(-), SCN-, SeCN-, N(CN)(2)(-) for 1-4 respectively] were synthesized and characterized by elemental analysis and different spectroscopic techniques viz. IR spectroscopy, UV-vis spectroscopy and X-ray crystallography. Complex 1 is hetero (-azido and -phenoxo) bridged dinuclear Zn(II) complex whereas complexes 2, 3 and 4 are tetranuclear Zn(II) complexes with corner-defective cubane structure. Complexes 2-4 bare the rare examples of presence of three different binding modes (mono, di and triply ((3)) bridging) of phenoxo group of a Schiff base ligand in a single platform. All four complexes exhibit groove binding as well as weak electrostatic interaction with CT-DNA (calf thymus-DNA). DFT (density functional theory) and MEP (Molecular electrostatic potential) analysis are also studied for complexes 1-4.
publisher WILEY-V C H VERLAG GMBH
issn 2365-6549
year published 2018
volume 3
issue 27
beginning page 7697
ending page 7706
digital object identifier (doi) 10.1002/slct.201801273
web of science category Chemistry, Multidisciplinary
subject category Chemistry
unique article identifier WOS:000439756200005
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