Novel copper(II) complexes of curcumin Knoevenagel condensates and their Schiff bases have been synthesized and characterized. All copper complexes possess distorted square‐planar geometries with 1:1 metal to ligand stoichiometry capable of stabilizing Cu2+/Cu1+ redox couples in the range 0.34 to 0.40 V. ESR spectral features are consistent with g‖>g⊥>2.0 suggesting monomeric nature of copper complexes having dx 2 −y 2 ground state.
Copper Conjugates of Knoevenagel Condensates of Curcumin and their Schiff Base Derivatives: Synthesis, Spectroscopy, Magnetism, ESR, and Electrochemistry
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