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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)
 

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Molecular structures of five-coordinated halide ligated iron(III) porphyrin, porphycene, and corrphycene complexes.

Molecular structures of 12 porphyrin analogues, Fe(III)(EtioP)X(1(a)-1(d)), Fe(III)(EtioCn)X(2(a)-2(d)), and Fe(III)(Etio-Pc)X(3(a)-3(d)), where X = F (a), Cl (b), Br (c), and I (d), are determined on the basis of X-ray crystallography. Combined analyses using Mössbauer, (1)H NMR, and EPR spectroscopy as well as SQUID magnetometry have revealed that 3(d) exhibits a quite pure S = 3/2 spin state with a small amount of an S = 5/2 spin admixture. In contrast, all the other complexes show the S = 5/2 spin state with a small amount of the S = 3/2 spin admixture. The structural and spectroscopic data indicate a strong correlation between the spin states of the complexes and the core geometries such as Fe-N bond lengths, cavity areas, and DeltaFe values.[1]

References

  1. Molecular structures of five-coordinated halide ligated iron(III) porphyrin, porphycene, and corrphycene complexes. Ohgo, Y., Neya, S., Ikeue, T., Takahashi, M., Takeda, M., Funasaki, N., Nakamura, M. Inorganic chemistry. (2002) [Pubmed]
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