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- W2059514874 abstract "A new tetranuclear complex, [Cu4L4]·2H2O (1), has been synthesized from the self-assembly of copper(II) perchlorate and the tridentate Schiff base ligand 4-chloro-2-[(E)-(2-hydroxyethylimino)methyl]phenol (H2L). Single-crystal X-ray diffraction studies reveal that complex 1 consists of a Cu4O4 cubane core where the four copper(II) centers are linked by μ3-alkoxo bridges. Each CuII ion assumes a distorted square-pyramidal geometry with CuNO4 chromophore. Variable-temperature magnetic susceptibility data exhibit distinct ferromagnetic exchange interaction, corroborating with the geometrical parameters of the structural unit. Theoretical calculations based on DFT method have been used to quantify the strength of the Cu···Cu magnetic interactions which help to evaluate the experimental coupling constants: J1 = +64.8, J2 = +24.4 and J3 = +3.0 cm–1. The EPR spectroscopy also gives some insight on the ferromagnetic S = 2 ground state of 1. In addition, detailed investigations have been carried out on the catalytic activity of the complex towards the oxidation of cycloalkanes using H2O2 as terminal oxidant.(© Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2009)" @default.
- W2059514874 created "2016-06-24" @default.
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- W2059514874 date "2009-10-01" @default.
- W2059514874 modified "2023-09-23" @default.
- W2059514874 title "Ferromagnetic Coupling in a New Copper(II) Schiff Base Complex with Cubane Core: Structure, Magnetic Properties, DFT Study and Catalytic Activity" @default.
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- W2059514874 doi "https://doi.org/10.1002/ejic.200900493" @default.
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