Analytical and Bioanalytical Electrochemistry is an international scientific journal, which is published online every 3 months (since 2009), every 2 months (since 2011) and monthly (since 2018) by Center of Excellence in Electrochemistry, University of Tehran Analytical and Bioanalytical Electrochemistry - 12 3 2020 03 01 Synthesis, Structure and Catalytic Performance of N4-Macrocycles of Fe III and Co II for Oxidation of Hydroquinone 318 328 38852 EN Vinod Kumar Vashistha Deepak Kumar Das Anubha Yadav Deepak Saini Anuj Kumar Department of Chemistry, Institute of Applied Science & Humanities, GLA University, Mathura, India Journal Article 2020 02 06 Macrocycles and p-benzoquinones (p-BQ) have been generally connected as potential co-synergist redox models in aerobic oxidation. To get insight for the synergist oxidation of hydroquinones (H₂Q), thus, we synthesized and characterized dibenzotetraaza [14]annulene type macrocycles of Fe^III and Co^II metal ions and described by utilizing different examinations including molar conductance, IR, UV-Vis, mass and cyclic voltammetric measurements. The spectroscopic and computational studies proposed that the macrocycles have saddle shape distorted octahedral structure. These macrocycles demonstrated the reversible and quasi-reversible redox process pursued by Randles-Sevcik equation, demonstrating the adjustment of unusual oxidation conditions of metal ions. Further, the experimental consequences presented herein enlighten the catalytic activity of these macrocycles towards the oxidation of H₂Q. The results indicated that in the absence of macrocycles, the molecular oxygen is inactive with H₂Q but in presence of synthesized macrocycles H₂Q initiates prompt oxidation with the production of H₂O₂. Moreover, Co^II macrocycle was found to be an efficient catalyst for the oxidation of H₂Q into corresponding benzoquinones. https://www.abechem.com/article_38852_788d8ecfaa6b9f460f667cb67f3faf9a.pdf