Synthesisand Spectroscopic Characterizationof High-Spin MononuclearIron(II) p-Semiquinonate Complexes

摘要

Two mononuclear iron(II) p-semiquinonate (pSQ) complexes have been generated via one-electron reduction of precursor complexes containing a substituted 1,4-naphthoquinone ligand. Detailed spectroscopic and computational analysis confirmed the presence of a coordinated pSQ radical ferromagnetically coupled to the high-spin Fe^II center. The complexes are intended to model electronic interactions between (semi)quinone and iron cofactors in biology.