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Reduced Cobalt-meso-Tetraphenylporphyrin Complexes: Synthesis and Structure of[Na(thf)3]2[Co(TPP)]

1986; Wiley; Volume: 25; Issue: 6 Linguagem: Inglês

10.1002/anie.198605531

1521-3773

Stefano Ciurli, Sandro Gambarotta, Carlo Floriani, Angiola Chiesi‐Villa, Carlo Guastini,

Supramolecular Chemistry and Complexes

Not the monoanion but ratehr the dianion, [Co(TPP)] 2⊖ , of cobalt(II) meso ‐tetraphenylporphyrin [Co(TPP)] is obtained upon reduction of the latter with two equivalents of sodium metal. It is of particular importance for the exact determination of the experimental conditions under which the monoanion, [Co(TPP)] ⊖ , which is frequently employed as a metal nucleophile, is formed. The structure of the title complex is characterized by a symmetrically arranged threefold contact ion.