Abstract
The title compound C23H24N2CuO2 (4 in Scheme 1) was prepared and characterized by IR, UV, and GC measurements. The structure was solved by direct methods, and full-matrix least-squares refinement of structural parameters led to a conventionalR factor of 0.049 for 1879 reflections. The copper(II) atoms are in a nontetrahedrally distorted planar coordination. A disorder of the five-membered chelate ring has been observed: two alternative positions,A andB for C20, C21 and C22 were found and refined with constrained C-N and C-C bond length. In bothA andB rings, connected by pseudosymmetry plane, the ethylene bridge shows the gauche conformation, with the methyl group in the axial position. The geometry of the molecule is discussed.
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Bukowska-Strzyżewska, M., Maniukiewicz, W., Bazylak, G. et al. Synthesis and molecular structure of propylene-bis(benzoylacetoneiminato)copper(II), [Cu(ba)2-1,2-pd]. Journal of Crystallographic and Spectroscopic Research 21, 157–166 (1991). https://doi.org/10.1007/BF01161058
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DOI: https://doi.org/10.1007/BF01161058