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- W1982598266 abstract "The electrochemical and spectral behaviors of three copper(II) complexes [CuL1] 1, [CuL2] 2 and [CuL3] 3, where L1, L2 and L3 are the dianions of macrocyclic oxamido Schiff bases, have been investigated by cyclic voltammetry, electronic and ESR spectra. These macrocyclic complexes, which incorporate both oxamido and imine groups, can undergo quasi-reversible reduction (CuII → CuI) and oxidation (CuII → CuIII). The crystal structures of 1 and 2 have been determined by single-crystal X-ray analysis. The difference in ring size leads to significant differences in molecular and crystal structure, electronic and ESR spectra and redox behavior. In the [14]N4 macrocyclic complex, 2, the CuN4 chromophore assumes a nearly square-planar co-ordination geometry, but the geometry in the [15]N4 macrocyclic complex, 1, is distorted towards tetrahedral. The results from spectroscopic and redox studies are consistent with the crystallographic results and perfectly related to each other. The main factors that determine the relative stability of CuI and CuIII in these complexes are the size, geometry and flexibility of the co-ordination cavity." @default.
- W1982598266 created "2016-06-24" @default.
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- W1982598266 date "2000-01-01" @default.
- W1982598266 modified "2023-09-23" @default.
- W1982598266 title "Crystal structure, redox and spectral properties of copper(II) complexes with macrocyclic ligands incorporating both oxamido and imine groups" @default.
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- W1982598266 doi "https://doi.org/10.1039/b000504p" @default.
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