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- W2022856633 abstract "A wide range of copper(II) polyamine complexes have been investigated by EPR and electronic spectroscopy in aqueous solution. All the compounds are found to be 4 + 2 or4 + I species with a dx2-y2 ground state. Species with only two nitrogen atoms coordinated have g∥ values in the range 2.27–2.29, those with three nitrogens coordinated have values around 2.23 whilst those with four nitrogens coordinated have values around 2.20. These results are explained in terms of a different equatorial ligand field. By considering the enthalpy of Cu(II) complex formation to be connected with the strength of the coordinate bonds, the EPR and spectroscopic parameters are discussed together with the previously measured enthalpy and entropy values of the complexes considered. Thus it is verified that the variations in g∥ correspond closely to the variations in ΔH° for most of the complexes examined. For the other complexes a different structure from the 4 + 2 one normally found is invoked and substantiated by the entropy values. Also, a linear relationship between the g∥ and ΛH° values is found." @default.
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- W2022856633 date "1976-01-01" @default.
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- W2022856633 title "An investigation of the structures of copper(II) polyamine complexes in aqueous solution by a combined evaluation of the EPR and thermodynamic parameters" @default.
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- W2022856633 doi "https://doi.org/10.1016/s0020-1693(00)91700-6" @default.
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