Stabilisation of μ-peroxido-bridged Fe(III) intermediates with non-symmetric bidentate N-donor ligands.
نویسندگان
چکیده
The spectroscopic characterisation of the (μ-1,2-peroxido)diiron(iii) species formed transiently upon reaction of [Fe(ii)(NN)3](2+) complexes with H2O2 by UV/vis absorption and resonance Raman spectroscopy is reported. The intermediacy of such species in the disproportionation of H2O2 is demonstrated.
منابع مشابه
Stabilisation of l-peroxido-bridged Fe(III) intermediates with non-symmetric bidentate N-donor ligands†
Prominent examples of non-haem diiron enzymes that activate dioxygen in their metabolism include soluble methane monooxygenase (sMMO), which hydroxylates methane, the R2 subunit of ribonucleotide reductase (RNR R2), which generates a tyrosyl radical and fatty acid desaturases (D9D). In these systems dioxygen activation involves peroxidodiiron(III) intermediates with characteristic ligand to met...
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متن کاملAcid/base triggered interconversion of μ-η2:η2-peroxido and bis(μ-oxido) dicopper intermediates capped by proton-responsive ligands† †Electronic supplementary information (ESI) available. CCDC 1511427–1511431. For ESI and crystallographic data in CIF or other electronic format see DOI: 10.1039/c6sc04820j Click here for additional data file. Click here for additional data file.
Cu 2(m-h :h-peroxido) and Cu 2 (m-oxido)2 cores represent key intermediates in copper/dioxygen chemistry, and they are mechanistically important for biological hydroxylation and oxidation reactions mediated by dinuclear (type III) copper metalloenzymes. While the exact nature of the active species in different enzymes is still under debate, shifting equilibria between Cux/O2 species is increasi...
متن کاملSynthesis, Crystal Structure and Antibacterial Evaluation of Di-μ-chlorido-bis({2-[(4-methoxyphenyl)- iminomethyl]pyridine-κ2N,N']Mercury(II)
New coordination polymer of [HgLCl2]n (1) with HgCl2 and Schiff base bidentate ligand (4-methoxyphenyl) pyridine-2yl methyleneamine (L) was prepared and structurally characterized. In the 1D network structure of 1, the mecury (II) ion adopts an HgN2Cl3 distorted square pyramid geometry. In this complex, one of the chlorine acts as bridging ligand connecting two adjacent mercury(II) ions while, ...
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عنوان ژورنال:
- Chemical communications
دوره 50 11 شماره
صفحات -
تاریخ انتشار 2014