Electrochemical Studies On Redox Properties Of Some MetalloporphyrinsElectrochemical Studies On Redox Properties Of Some Metalloporphyrins

Abstract

This thesis offers a comprehensive analysis of the structural, electrochemical, and newlinebiological characteristics of several transition metal porphyrins. It specifically investigates the newlineredox newlineproducts newlineof newlineNickel newline5,10,15,20-tetrakis(3,4,5-trimethoxyphenyl) newlineporphyrin newline[Ni((OCH3)3TPP)], oxidovanadium 5,10,15,20-tetrakis(3,4,5-trimethoxyphenyl) porphyrin newline[VO((OCH3)3TPP)], and Cobalt 5,10,15,20-tetrakis(3,4,5-trimethoxyphenyl) porphyrin newline[Co((OCH3)3TPP)]. newlineChapter 1 provides a thorough examination of the electrochemical and structural newlineinvestigations conducted on the oxidation products of Ti, VO, Cr, Mn, Fe, Cu, Co, Ni and Zn newlineporphyrins. This chapter provides an introduction to the EPR investigations conducted on the newlineredox products of oxidovanadium, nickel (II), and cobalt (II) porphyrins. These studies will be newlinefurther detailed in the next chapters of the thesis. newlineChapter 2 outlines the experimental procedures used in this study, offering newlinecomprehensive methodologies for the synthesis, characterisation, and analysis of the metal newlineporphyrin complexes. These processes serve as the basis for the research and conclusions that newlineare given in the subsequent chapters. newlineChapter 3 centres on the process of combining and analysing porphyrin and newlinemetalloporphyrins. The achievement of synthesising oxidovanadium 5,10,15,20-tetrakis(3,4,5 newlinetrimethoxyphenyl) porphyrin, is emphasised. The structure, as determined by single crystal newlineanalysis, has a distorted octahedral arrangement due to the interaction of the vanadium cation newlinewith six constituents, including a vanadyl oxygen atom. The chapter also examines the newlineHirshfeld surface analysis of oxidovanadium using dnorm mapping, highlighting important newlineinteractions such as Hand#8943;H (62.4%), Oand#8943;H (11.8%)/Hand#8943;O (10.4%), and Cand#8943;H newline(7.4%)/Hand#8943;C(5.9%). The confirmation of the structures of nickel and cobalt porphyrins is newlineachieved through Single crystal or powder XRD and elemental analysis. Additionally, these newlinecomplexes are subjected to comprehensive Hirshfeld surface investigation.