Abstract
Copper(II) complexes CuL2 (HL = 2-(2-hydroxyphenyl)-4,4-diphenyl-1,2-dihydro-4H-3,1-benzoxazine and 2-(2-hydroxy-5-nitrophenyl)-4,4-diphenyl-1,2-dihydro-4H-3,1-benzoxazine) in chloroform were studied by EPR and electronic absorption spectroscopy. It was found that the complexation involves the azomethine forms of the ligands, which are coordinated by the Cu atom through the phenol and azomethine fragments of both ligands. The electronic absorption spectra were decomposed into Gaussian components to determine the d-d transition energies. The parameters of the complexation were calculated in terms of the angular overlap model. The order of energy arrangement of the orbitals of the central atom was determined: \(d_{x^2 - y^2 } \gg d_{xy} > d_{z^2 } > d_{xz} > d_{yz} \).
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Original Russian Text © T.E. Apenysheva, N.N. Bukov, A.A. Sklyar, S.N. Bolotin, K.S. Pushkareva, 2006, published in Koordinatsionnaya Khimiya, 2006, Vol. 32, No. 5, pp. 350–353.
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Apenysheva, T.E., Bukov, N.N., Sklyar, A.A. et al. Structures of copper(II) complexes with dihydrobenzoxazine derivatives in chloroform. Russ J Coord Chem 32, 335–338 (2006). https://doi.org/10.1134/S1070328406050058
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DOI: https://doi.org/10.1134/S1070328406050058