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Bromo-substituted Mn(II) and Mn(III)-tetraarylporphyrins: synthesis and properties

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Mono-, tetra-, and octa-bromo substituted Mn(II)- and Mn(III)-tetraarylporphyrins were synthesized by reactions of manganese(II) chloride with corresponding porphyrin ligands or their Cd(II)-complexes in DMF. With the use of the metal exchange reaction, the time of the Mn-porphyrins formation is significantly reduced with increase in yield of final products in comparison with the complexation reaction. Mn(III)-tetraarylporphyrins reduce to the Mn(II)-porphyrins in DMF in the presence of NaOH and in pure DMF. The obtained compounds were identified using UV–vis and 1H NMR spectroscopy, mass-spectrometry, and elemental analysis.
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Keywords: Bromo-substituted porphyrins; Mn(II)- and Mn(III)-tetraarylporphyrins; complexation; metal-exchange reaction; spectroscopy

Document Type: Research Article

Affiliations: 1: Laboratory of Coordination Chemistry of Macrocyclic Compounds, G. A. Krestov Institute of Solution Chemistry of the Russian Academy of Sciences, Ivanovo, Russian Federation; 2: Research Institute of Macroheterocycles, Ivanovo State University of Chemistry and Technology, Ivanovo, Russian Federation;

Publication date: October 2, 2018

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