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• W2014491269 abstract "The peroxidase and catalase activities of eighteen manganese–Schiff base complexes have been studied. A correlation between the structure of the complexes and their catalytic activity is discussed on the basis of the variety of systems studied. Complexes 1–18 have the general formulae [MnLn(D)2](X)(H2O/CH3OH)m, where Ln = L1–L13; D = H2O, CH3OH or Cl; m = 0–2.5 and X = NO3−, Cl−, ClO4−, CH3COO−, C2H5COO− or C5H11COO−. The dianionic tetradentate Schiff base ligands H2Ln are the result of the condensation of different substituted (OMe-, OEt-, Br-, Cl-) hydroxybenzaldehyde with diverse diamines (1,2-diaminoethane for H2L1–H2L2; 1,2-diamino-2-methylethane for H2L3–H2L4; 1,2-diamino-2,2-dimethylethane for H2L5; 1,2-diphenylenediamine for H2L6–H2L7; 1,3-diaminopropane for H2L8–H2L11; 1,3-diamino-2,2-dimethylpropane for H2L12–H2L13). The new Mn(III) complexes [MnL1(H2O)Cl](H2O)2.5 (2), [MnL2(H2O)2](NO3)(H2O) (4), [MnL6(H2O)2][MnL6(CH3OH)(H2O)](NO3)2(CH3OH) (8), [MnL6(H2O)(OAc)](H2O) (9) and [MnL7(H2O)2](NO3)(CH3OH)2 (12) were isolated and characterised by elemental analysis, magnetic susceptibility and conductivity measurements, redox studies, ESI spectrometry and UV, IR, paramagnetic 1H NMR, and EPR spectroscopies. X-ray crystallographic studies of these complexes and of the ligand H2L6 are also reported. The crystal structures of the rest of the complexes have been previously published and herein we have only revised their study by those techniques still not reported (EPR and 1H NMR for some of these compounds) and which help to establish their structures in solution. Complexes 1–12 behave as more efficient mimics of peroxidase or catalase in contrast with 13–18. The analysis between the catalytic activity and the structure of the compounds emphasises the significance of the existence of a vacant or a labile position in the coordination sphere of the catalyst." @default.
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• W2014491269 date "2011-12-01" @default.
• W2014491269 modified "2023-09-27" @default.
• W2014491269 title "Influence of the geometry around the manganese ion on the peroxidase and catalase activities of Mn(III)–Schiff base complexes" @default.
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• W2014491269 doi "https://doi.org/10.1016/j.jinorgbio.2011.09.002" @default.
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