72895-19-3Relevant articles and documents
Iron(III) Porphyrin Sulphate Complexes. Total Assignment of the Carbon-13 N.M.R. Spectrum
Phillippi, Martin A.,Goff, Harold M.
, p. 455 - 456 (1980)
Synthesis and physical characterization, including 13C n.m.r. measurements, are reported for the first iron(III) porphyrin sulphate species.
Reactions of SO2 with iron porphyrinates and the crystal structure of (hydrogen sulfato)(tetraphenylporphinato)iron(III) hemibenzene solvate
Robert Scheidt,Lee, Young Ja,Finnegan, Michael G.
, p. 4725 - 4730 (2008/10/08)
The reactions of FeIITPP and FeIIITPP with sulfur dioxide have been investigated as part of a study of potential coordination chemistry models for sulfite and nitrite reductase. Although the solubility of FeIITPP in a variety of solvents is significantly increased by the addition of SO2 to the solvent, we have been unable to isolate any SO2 adducts. We do find that the presence of SO2 substantially increases the oxidation sensitivity of iron(II) porphyrinates. We have isolated three different sulfato complexes of (porphinato)iron(III): the previously reported binuclear species, [Fe(TPP)]2SO4, a mononuclear bisulfate complex, [Fe(TPP)(OSO3H)], and a third sulfate-containing derivative. The species have been characterized by UV-vis and IR spectroscopy, and the [Fe(TPP)(OSO3H)] complex has also been the subject of a single-crystal X-ray structure determination. This investigation revealed a monodentate hydrogen sulfato ligand leading to a five-coordinate high-spin iron(III) complex. The axial Fe-O bond distance is 1.926 ?, and the average Fe-N bond distance is 2.042 ?. Crystal data for [Fe(TPP)(OSO3H)]·1/2C6H6: monoclinic, a = 16.981 (5) ?, b = 13.559 (3) ?, c = 33.456 (5) ?, β = 99.88 (2)°, Z = 8, space group P2/c, 5990 unique observed data, R1 = 0.052, R2 = 0.059, all observations at 293 K. The reaction of sulfur trioxide with [Fe(TPP)]2O has also been briefly investigated: [Fe(TPP)]2SO4 is produced.
