Abstract
The ionic strength dependence of axial ligation in manganese(III) 5,10,15,20-tetraarylporphyrin chlorides has been investigated and found to be much more important than has hitherto been recognized. In this study tetrahydrofuran solutions of the metalloporphyrin, 0.0-0.5 M in the electrolyte tetrabutylammonium tetrafluoroborate, were examined by electronic absorption and resonance Raman spectroscopies as well as ultramicroelectrode voltammetry. The metalloporphyrin complexes were found to be significantly dissociated even at moderate electrolytc concentrations.
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