Abstract
Molecular structures of 2-hydroxy-1,4-naphthoquinone (Lw), its chloro (ClLw; 2-chloro-3-hydroxy-1,4-naphthoquinone) and bromo (BrLw; 2-bromo-3-hydroxy-1,4-naphthoquinone) derivatives and their Zn(II) complexes are derived from the wB97x based density functional theory. The calculations predicted that the trans, trans conformer of the Zn(II) complex of 2-hydroxy-1,4-naphthoquinone (ZnLw) turns out to be of the lowest energy. A comparison of C(2) substituted chloro and bromo derivatives has been presented. Single X-ray crystal structure revealed that the BrLw belongs to monoclinic Cc space group with three independent molecules in its asymmetric unit cell with the crystal network extending through π–π stacking whilst the ZnBrLw complex possesses monoclinic P21/n space group and facilitate hydrogen bonding interactions. Electrochemical characterization describing the redox behavior of BrLw and Zn(II) complex in DMSO has been carried out through cyclic voltammetry experiments.
Published Version
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