Abstract
The complex Cu(hfac)2(DMF)2 (where hfac = the anion of hexafluoropentanedione and DMF = dimethylformamide) has been prepared and its crystal structure has been determined by X-ray diffraction methods. The complex molecule locates around an inversion centre in the crystal state. Two DMF ligands coordinate to the Cu(II) atom in the axial direction while two hfac ligands chelate to the Cu(II) atom in the equatorial plane. The remarkable feature of this structure is that the difference of 0.032(3) Å in coordination bond distances between the axial direction and the equatorial plane shows a very small Jahn-Teller distortion around the Cu(II) atom.
Published Version
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