Co(III) complexes with optically active bis(menthane), pinano-para-menthane, carano-para-menthane, and bis(carane) propylenediaminodioximes

Co(III) complexes with optically active bis(menthane), pinano-para-menthane,... Novel optical ligands bis(menthane) (H2L1), pinano-para-menthane (H2L2), and carano-para-menthane (H2L3) propylenediaminodioximes are obtained. Diamagentic Co(III) complexes of the composition Co(HL1)Cl2 (I), Co(HL2)Cl2 (II), Co(HL3)Cl2 (III), and Co(HL4)Cl2 · H2O(IV) are synthesized by reactions of CoCl2 with H2L1, H2L2, H2L3 and bis(carane) propylenediaminodioxime (H2L4) in ethanol in air. The crystal and molecular structures of compound I is determined by X-ray diffraction analysis. The crystals are monoclinic with the unit cell parameters a = 7.8385(3) Å, b = 11.4074(6) Å, c = 14.9509(6) Å, β = 104.278(2)°, V = 1295.57(10) Å3, Z = 2, ρ(calcd) = 1.367 g/cm3, F(000) = 564, M = 533.41, space group P21. The crystal structure of complex I consists of individual mononuclear molecules. The Co3+ ion coordinates four N atoms of tetradentate cycle-forming anionic ligand and two Cl atoms. The coordination polyhedron of Cl2N4 is a distorted octahedron. The 13C and 1H NMR spectra of the complexes synthesized confirm coordination of four N atoms of a ligand. Russian Journal of Coordination Chemistry Springer Journals

Co(III) complexes with optically active bis(menthane), pinano-para-menthane, carano-para-menthane, and bis(carane) propylenediaminodioximes

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Copyright © 2006 by Pleiades Publishing, Inc.
Chemistry; Inorganic Chemistry; Physical Chemistry
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