Preparation and spectral properties of β-bromo-substituted Mn(III) tetraphenylporphyrinates

Abstract

Interaction of 5,10,15,10,15,and 2,3,12,10,15,20-tetraphenylporphyrin with manganese(II) chloride in dimethylformamide has been studied by means of spectrophotometry. The corresponding chloride acido complexes of manganese(III) has been so prepared and identified. The complexes could be reduced into manganese(II) tetraphenylporphyrinates in the presence of potassium hydroxide in dimethylformamide.

Unexpected Solvent Effect in Electrocatalytic CO2 to CO Conversion Revealed Using Asymmetric Metalloporphyrins

“…A series of new first-row transition-metal complexes of 5-(2-hydroxyphenyl)-10,15,20-triphenylporphyrin (MTPOH, where M = Mn, Fe, Co, Ni, Cu) was prepared and characterized. The electronic absorption spectra of the H 2 TPOH ligand and the metal complexes − have extinction coefficients (ε) and λ max values identical with those for the corresponding 5,10,15,20-tetraphenylporphyrin (TPP) complexes (see the Supporting Information). On the basis of this observation, the addition of a single hydroxyl group to a phenyl group does not significantly affect the electronic properties of the aromatic system and metal center in these complexes.…”