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- W2039478992 abstract "A copper(II) sulfate complex of formula [Cu(bpy)2(O2SO2)]·CH3OH (1) (bpy = 2,2′-bipyridine) was prepared and characterized by X-ray diffraction, spectroscopic methods (FIR, IR, NIR–Vis–UV, EPR) and magnetic measurement. The S–O distances in the chelating SO42- entity give the value of the geometric distortion parameter Δr = 0.022. The EPR g parameters are temperature dependent and indicated the fluxional model of the [Cu(N,N′)2OO] chromophore with dx2-y2 ground state. The electronic spectrum of 1 exhibits the maxima at 9740 and 14 630 cm−1. The very weak antiferromagnetic interaction between copper centers in the crystal lattice was observed. In [Cu(bpy)3][SO4]·7.5H2O (2) crystal the distance values in [Cu(bpy)3]2+ cations result in T = 0.958 and the value of Δr of the non-coordinate SO42- tetrahedron is 0.095. The value of T for [CuN6] (2) suggests the fluxional character of Jahn–Teller (JT) distortion supported by the EPR studies. The electronic spectrum shows two separated bands at 6900 and 14 400 cm−1." @default.
- W2039478992 created "2016-06-24" @default.
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- W2039478992 date "2011-05-01" @default.
- W2039478992 modified "2023-09-25" @default.
- W2039478992 title "Structural and spectroscopic parameters of distortion in [Cu(bpy)2(O2SO2)]·CH3OH and [Cu(bpy)3][SO4]·7.5H2O – Synthesis, crystal structure, spectroscopic and magnetic properties" @default.
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- W2039478992 doi "https://doi.org/10.1016/j.poly.2011.03.013" @default.
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