title: Proton-mediated electron configuration change in high-spin iron(II) porphyrinates.
abstract: The synthesis, molecular structure, and electronic structure characterization of two five-coordinate high-spin imidazolate-ligated iron(II) porphyrinates are reported. Their electronic structure, as deduced from Mössbauer spectra obtained in strong magnetic fields, is distinctly different from that of the analogous imidazole-ligated species. The resulting electronic structure models are consistent with all observed differing features in the two classes.
authors.affiliation: Department of Chemistry and Biochemistry, University of Notre Dame, Indiana 46556, USA.
authors.forename: Chuanjiang
authors.initials: C
authors.lastname: Hu
authors.forename: Bruce C
authors.initials: BC
authors.lastname: Noll
authors.forename: Charles E
authors.initials: CE
authors.lastname: Schulz
authors.forename: W Robert
authors.initials: WR
authors.lastname: Scheidt
mesh_terms: D004578:Electron Spin Resonance Spectroscopy; D004583:Electrons; D005290:Ferric Compounds / Q000737:chemistry; D005296:Ferrous Compounds / Q000737:chemistry*; D007093:Imidazoles / Q000737:chemistry; D007501:Iron / Q000737:chemistry*; D008665:Metalloporphyrins / Q000737:chemistry*; D015394:Molecular Structure; D011522:Protons
chemical_list: D005290:Ferric Compounds; D005296:Ferrous Compounds; D007093:Imidazoles; D008665:Metalloporphyrins; D011522:Protons; D007501:Iron