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.
keywords
SINGLE-MOLECULE MAGNET; CRYSTAL-STRUCTURES; METAL-COMPLEXES; IN-VITRO; COPPER(II) COMPLEXES; ZINC(II) COMPLEXES; CU(II) COMPLEXES; HIGH-NUCLEARITY; DONOR LIGANDS; CLEAVAGE
subject category
Chemistry
authors
Ghorai, P; Brandao, P; Bauza, A; Frontera, A; Saha, A
our authors
Paula Cristina Ferreira da Silva Brandão
Assistant Researcheracknowledgements
A. S. gratefully acknowledges the financial support of this work by the DST, India (Sanction No. SB/FT/CS-102/2014, dated- 18.07.2015).