Retention of configuration at the titanium atom upon oxo–peroxo ligand substitution of titanium(IV) porphyrins

Abstract
N.m.r. spectra of oxo- and peroxo-titanium(IV) complexes of a suitably substituted tetraphenylporphyrin suggest that formation of the peroxo-species from the oxo-compound and hydrogen peroxide takes place with retention of configuration; labelling experiments indicate that this ligand exchange is a true substitution, i.e. the O–O bond of H2O2 remains intact in the peroxo complex.

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