Tuning the iron redox state inside a microporous porphyrinic metal organic framework

Abstract

was inferred (x ≥ 0.25). Whereas the already reported carboxylate analogue is built up from a pure iron(iii) inorganic chain, here spectroscopic and structural studies evidenced a mixed valence iron(ii/iii) state, evidencing that, in agreement with the HSAB theory, the substitution of a carboxylate function by a tetrazolate one allows redox tuning. Finally, both materials feature one-dimensional channels of ca. 8 × 12 Å within the structures with permanent microporosity.