COMPETITION OF OXYGEN- AND NITROGEN-DONOR LIGANDS IN THE SYNTHESIS OF COMPLEX COMPOUNDS OF COPPER WITH 2-(PHENYL-4-CHLOROPHENYLACETYL)INDANDIONE-1,3

Abstract

The interaction of CuCl and 2-(phenyl-4-chlorophenylacetyl)indandione-1,3 (HL, C23H15ClO3) in a mixed organic solvent (CH3CN, C5H5N, EtOH) gave a solvated crystal complex of copper(II) of composition [Cu(C2H5OH)(L)2]•C2H5OH (I). The isolated compound was investigated by X-ray and IR spectroscopy methods. Lattice parameters of (I): space gr. P21/c, a = 14.982(1), b = 14.558(1), с = 20.608(2) Å; β= 105.176(2)°; Z = 4 (Z′=1). It is established that the structural units in the crystal structure of the obtained compounds are the neutral square-planar coordination spheres of Cu(II) with cis-oriented deprotonated indandionate ligands L. The spheres are located in the space pairwise. One molecule of EtOH is included in the internal sphere of the complex, and the second is a bridge that unites the coordination centers due to the hydrogen bonds between the hydrogen atom of the hydroxo group of the coordinated alcohol and the O-atom of the keto group of the adjacent bis-chelate. This results in a dimer structure. At the same time, in addition to ethanol, molecules of other co-solvents (CH3CN, C5H5N) do not participate in complex formation and do not form solvates. It was found that a copper(II) complex is formed from copper(I) chloride. When using copper(I) iodide as a starting compound in ethanol in the presence of pyridine the formation of the chelate with the deprotonated ligand HL is not observed.

Keywords

• 2-(ацетил)индандион-1,3
• 2-(дифенилацетил)индандион-1,3
• 2-(фенил-4-хлорфенилацетил)индандион-1,3
• copper(i)
• copper(ii)
• coordination compounds
• 2-(acetyl)indandion-1,3
• 2-(diphenylacetyl)indandion-1,3
• 2-(phenyl-4-chlorophenylacetyl)indandione-1,3
• cyclic tricarbonyl compounds
• ir spectroscopy