Synthesis and properties of the Cu(II) complexes with chiral bis{(E)-[(1S,4R)-Δ7,8-1-amino-2-para-menthalidene]aminohydroxy}methane (L — a derivative of natural terpenoid (R)-(+)-limonene). Crystal structure of the [Cu(L)(μ-Cl)CuCl3] · iso-PrOH solvate

• Published in: Russian journal of coordination chemistry 2009-03, Vol.35 (3), p.200-209
• Main Authors: Kokina, T. E., Glinskaya, L. A., Klevtsova, R. F., Boguslavskii, E. G., Sheludyakova, L. A., Bisyaev, S. N., Tkachev, A. V., Larionov, S. V.
• Format: Article
• Language: English
• Subjects: Chemistry; Chemistry and Materials Science; Inorganic Chemistry; Physical Chemistry
• ISSN: 1070-3284; 1608-3318
• DOI: 10.1134/S1070328409030075

The Cu 2 LCl 4 complex ( I ) with chiral bis{( E )-[(1 S ,4 R )-Δ 7,8 -1-amino-2- para -menthalidene]aminohydroxy} methane (L — a derivative of natural monoterpenoid ( R )-(+)-limonene) is synthesized. The crystal structure of the solvate of complex I [Cu(L)(μ-Cl)CuCl 3 ] · iso -PrOH ( II ) is determined by X-ray diffraction analysis. Structure II is based on molecules of the [Cu(L)(μ-Cl)CuCl 3 ] binuclear complexes in which L is the tetradentate cycleforming ligand. One Cl atom manifests the bridging function. The CuN 4 Cl coordination unit is a square pyramid, and CuCl 4 is a distorted tetrahedron. The iso -PrOH molecules are localized in cavities between the layers of structure II . The μ eff value for complex I is 2.56 μB and indicates the absence of an appreciable interaction between the Cu 2+ ions in the Cu(II)-Cl-Cu(II) exchange cluster. The compound CuLCl 2 · H 2 O ( III ) is synthesized. The μ eff value for compound III is 1.6 μB. Complexes I and III are studied by EPR and IR spectroscopy.