Abstract
AbstractFour novel Zn(II) complexes [Zn2L2X2] (1), [Zn4L4X(OH)(OH2)][ZnX4]⋅H2O⋅CH3OH (2,3) and [Zn4L4X(OH)(OH2)](N(CN)2)(NO3)⋅ 2H2O⋅CH3OH (4) [where HL=(E)‐2‐methoxy‐6‐((quinolin‐8‐ylimino)methyl)phenol and X= N3−, 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 (μ‐azido and μ‐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 (μ3) 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.
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