Sharing the π-Bonding. An Iron Porphyrin Derivative with Trans, π -Accepting Axial Ligands. Synthesis, EPR and Mossbauer Spectra, and Molecular Structure of Two Forms of the Complex Nitronitrosyl(α,α,α ,α-tetrakis(o-pivalamidophenyl)- porphinato)

摘要

The reaction of the iron(Ⅱ) picket fence porphyrin derivative [Fe(TpivPP)(NO_2)]~- (Nasri et al.J.Am. Chem. Soc.1991, 113, 717) with NO has been examined. The result is a new hexacoordinated iron iron(Ⅱ) porphyrin complex, [Fe(TpivPP)(NO_2)(NO)]~-. This compound has been characterized by UV-vis, IR, EPR, and Mossbaueer spectroscopies. All data show that the species is low spin (S=1/2).