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- W2080888077 abstract "The interaction between dioxygen and wer N-base solutions of Fe(II) hemiporphyrazine (Fehp) leads to the title compound, which is a high-spin antiferromagnetically coupled iron(III) complex. The crystal and molecular structure has been determined by X-rays. The unit cell is the tetragonal space group P4/ncc, with a=b=19.083(5) and c=23.509(5) Å. 2141 unique observed reflections were used in the analysis, and the final conventional R is 0.059. The structure consists of Fe(III)hp μ-oxo dimers having strictly linear FeOFe units and a nearly eclipsed internal configuration. This is the first observation of the formation of a mono-adduct in μ-oxo dimer via axial coordination of a H2O molecule. The resulting asymmetric dimer, H2OFeAhpOFeBhp contains a six-coordinated Fe atom (FeA) lying in the plane of the four Ns of the macrocycle. The second Fe atom (FeB) is five-coordinated and lies outside of the coordination plane by 0.45 Å. The FeO distances are: FeAO=1.782(7) Å and FeBO=1.739(7) Å. The axial coordination of the water (FeAOw=2.210(9) Å) seems weak, probably due to the labilising trans influence of the μ-oxo ligand. The dimers are paired coaxially to form tetramers, which are in turn connected via a two- dimensional net of hydrogen bonds. The structural results are correlated with spectroscopic, thermogravimetric and magnetic properties." @default.
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- W2080888077 date "1986-01-01" @default.
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- W2080888077 title "Synthesis and structure of an oxidation product of hemiporphyrazinatoiron(II): Monoaquo-μ-oxo-bis(hemiporphyrazinato)iron(III). A linear μ-oxo dimer containing six- and five-coordinated iron atoms" @default.
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- W2080888077 doi "https://doi.org/10.1016/s0020-1693(00)84644-7" @default.
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