COT ISLAND INSIDE TWO FUSED CORROLES: PYRIDINE AXIALLY LIGATED FIVE COORDINATE DIIRON(III)CORROLE DIMER AND RELATED ELECTROCHEMISTRY

Direct synthesis of cyclooctatetraene (COT) bridged corrole dimer has been improved by minor modification of the reported procedure.^1,2 Extensive Π-delocalization in the ligand produce extremely low energy band, that reach into infra red region, making this novel dimer very good candidate for bio-imaging studies. This prompts us to synthesize biologically relevant, easily oxidizable and reducible diiron complexes. Electrochemical and coordination properties of diiron-corrole dimer has been compared with previously reported monmeric analogs. The dimer exhibit unexpected preference for penta-coordination, whereas monomeric analog forms hexacoordinated complex.^3,4

References:

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(4) Simkhovich, L.; Galili, N.; Saltman, I.; Goldberg, I.; Gross, Z. Inorg.

Chem. 2000, 39, 2704-2705.