Work

Reaction of a Nitrosyl Complex of Co(II)‐Porphyrin with Hydrogen Peroxide: Formation of a Porphyrin Radical Cation

Year: 2024

Type: article

Abstract: A nitrosyl complex of Co(II)‐porphyrinate, [CoII(TTMPP2−)(NO)], 1 [TTMPPH2=5,10,15,20‐tetrakis(3,4,5‐trimethoxyphenyl)porphyrin] having {Co(NO)}8 configuration has been synthesized and characterized spectroscopically as well as structurally. Complex 1 in dichloromethane:acetonitrile (1 : 4, v/v) solution at −40 °C reacts with hydrogen peroxide (H2O2) to result in the corresponding nitrite (NO2−) complex, [CoIII(TTMPP2−)(NO2−)], 2. The formation of a Co(III)‐peroxynitrite intermediate is presumed in this reaction based on the characteristic phenol ring nitration test. From spectroscopic studies, formation of [CoIV=O] species followed by a Co(III)‐porphyrin radical complex was observed during the course of the reaction.

Source: Chemistry - An Asian Journal

DOI: 10.1002/asia.202401082

Authors: Bapan Samanta, Shankhadeep Saha, Riya Ghosh, Sayani Maity, Biplab Mondal

Institution: Indian Institute of Technology Guwahati

Language: English

Topic: Porphyrin and Phthalocyanine Chemistry

Subfield: Materials Chemistry

Field: Materials Science

Domain: Physical Sciences

Open Access status: bronze

Funders: Department of Science and Technology, Ministry of Science and Technology, India, Indian Institute of Technology Guwahati

Award: G3501665069