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Novel peroxidase mimics: μ-Aqua manganese–Schiff base dimers
- Source :
-
Journal of Inorganic Biochemistry . Sep2006, Vol. 100 Issue 9, p1470-1478. 9p. - Publication Year :
- 2006
-
Abstract
- Abstract: The interaction of manganese(II) carboxylate salts [Mn(O2CR)2, where R=ethane, pentane] with H2L1 [N,N′-bis(3-methoxy-2-hydroxybenzaldehyde)-1,2-phenylenediamine] and H2L2 [N,N′-bis(3-ethoxy-2-hydroxybenzaldehyde)-1,2-phenylenediamine] was studied. MnL1(O2CEt)(H2O) (1), MnL1(O2CPe n )(H2O) (2), MnL2(O2CEt)(H2O)2 (3) and MnL2(O2CPe n )(H2O)2 (4) were isolated and thoroughly characterised by elemental analysis, FAB mass spectrometry, infrared and 1H NMR spectroscopy, magnetic susceptibility measurements, molar conductivities, and cyclic and normal pulse voltammetry. Compounds 1 and 2 were crystallographically characterised revealing a tetragonally elongated octahedral geometry for the manganese coordination sphere and also a dimeric nature through μ-aqua bridges. Complexes 1–4 behave as efficient peroxidase mimics in the presence of the water-soluble trap ABTS, probably due to their ease to coordinate the substrate molecule. A correlation between rhombicity of the complexes and peroxidase activity has also been established. [Copyright &y& Elsevier]
- Subjects :
- *PEROXIDASE
*CRYSTALLOGRAPHY
*SPHERES
*DIMERS
*MOLECULES
Subjects
Details
- Language :
- English
- ISSN :
- 01620134
- Volume :
- 100
- Issue :
- 9
- Database :
- Academic Search Index
- Journal :
- Journal of Inorganic Biochemistry
- Publication Type :
- Academic Journal
- Accession number :
- 21918649
- Full Text :
- https://doi.org/10.1016/j.jinorgbio.2006.04.012