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

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...

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Bibliographic Details
Published in:Russian journal of coordination chemistry 2006-04, Vol.32 (4), p.250-260
Main Authors: Larionov, S. V., Tkachev, A. V., Savel’eva, Z. A., Myachina, L. I., Glinskaya, L. A., Klevtsova, R. F., Bizyaev, S. N.
Format: Article
Language:English
Subjects:
Chemical synthesis
Coordination compounds
Crystal structure
Crystals
Ethanol
Ligands
Molecular structure
NMR
Nuclear magnetic resonance
Optical activity
Unit cell
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Summary: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.
ISSN:1070-3284
1608-3318
DOI:10.1134/S107032840604004X