Journal ArticleDOI
Mössbauer studies on oxygen binding in protoporphyrin IX iron(II) solutions in the presence of other ligands
B. Lukas,Jack Silver +1 more
TLDR
Mossbauer parameters of frozen solutions of protoporphyrin IX iron(II) (containing either 2-methyl-piperidine or mercaptoethanol as the fifth iron ligand) that were exposed to oxygen before freezing are similar to those of oxyhaemoglobin this article.About:
This article is published in Inorganica Chimica Acta.The article was published on 1985-04-01. It has received 9 citations till now. The article focuses on the topics: Oxygen binding & Protoporphyrin IX.read more
Citations
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Journal ArticleDOI
Mössbauer spectroscopic studies on concentrated protoporphyrin IX iron(II) solutions
TL;DR: In this article, the Fe Mossbauer parameters are presented for protoporphyrin IX iron(II) frozen solutions, interpreted as evidence for changes in the electronic environments around the iron centers when the metalloporphrin molecules aggregate in solution.
Journal ArticleDOI
A Mössbauer study on the (protoporphyrinato IX)iron(II) complexes of imidazole and substituted imidazoles as axial ligands in frozen aqueous solutions
Okhil K. Medhi,Jack Silver +1 more
TL;DR: In this article, a Mossbauer study on (protoporphyrinato IX)- iron(II) complexes of the type [(PPIX)Fe(II)(ImR)n] where ImR=imidazole (ImH), 1-methylimidazoles (1-MeIm) or 2-meImH) indicates that the ImH and 1 MeIm complexes are low spin S = O and monomeric in 1:1 ethanol:water whereas the 2 MeImH complex in this solvent is present as a five-
Journal ArticleDOI
Mössbauer studies on tetra(p-sulphophenyl)porphyrin iron(II) solutions
Jack Silver,B. Lukas,J. Al Taies +2 more
TL;DR: In this paper, room temperature electronic spectra and frozen solution Mossbauer spectra (collected at 78 K) of TPPSFe(II) solutions are reported and discussed with reference to the known crystal structures of TPPFe (II) and TPPFe(III)(OClO3)·O.
Journal ArticleDOI
Mössbauer spectroscopic studies on tetra(sulphonaphthyl)porphine iron(II) solutions
Jack Silver,Jehad A. Taies +1 more
TL;DR: In this article, the presence of the napthyl substituents on the methine carbons stabilises the low spin iron(II) species containing two axial water ligands.
Journal ArticleDOI
Mössbauer spectroscopic evidence for molecular complex formation between histidine and μ-oxo-bis(protoporphyrinato IX)iron(III)
Okhil K. Medhi,Jack Silver +1 more
TL;DR: This is to the authors' knowledge the first Mossbauer spectroscopic study on a molecular π complex involving a porphyrin moiety and the apoprotein conformation in a haem protein may provide such a favourable alignment of an aromatic amino acid residue in the protein pocket so as to favour such a π-π interaction.
References
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Journal ArticleDOI
Synthetic Oxygen Carriers of Biological Interest
Journal ArticleDOI
Inorganic oxygen carriers as models for biological systems
G. McLendon,Arthur E. Martell +1 more
Journal ArticleDOI
Models for the Active Site of Oxygen-Binding Hemoproteins. Dioxygen Binding Properties and the Structures of (2-Methylimidazole)-meso-tetra(α,α,α,α-o-Pivalamidophenyl)porphyrinatoiron(II)-Ethanol and Its Dioxygen Adduct
Geoffrey B. Jameson,Frank S. Molinaro,James A. Ibers,James P. Coliman,John I. Brauman,Eric Rose,Kenneth S. Suslick +6 more
Journal ArticleDOI
Mössbauer studies on protoporphyrin IX iron(III) solutions
Jack Silver,B. Lukas +1 more
TL;DR: Mossbauer spectroscopic studies on frozen solutions of protoporphyrin IX iron(II) in the pH range 7-14 reveal evidence for three different species.
Related Papers (5)
Mössbauer studies on protoporphyrin IX iron(II) solutions containing sulphur ligands and their carbonyl adducts. Models for the active site of cytochromes P-450
Jack Silver,B. Lukas +1 more
Mössbauer studies on protoporphyrin IX iron(II) frozen solutions containing ligands that cause the iron to be in a five coordinate high spin iron(II) environment
Jack Silver,B. Lukas,G. Al-Jaff +2 more