Abstract
Coordination compounds Cu2(H2L1)Cl4 (I), Pd2(H2L1)Cl4 (II), Cu2(H2L2)Cl4 (III), and Pd2(H2L2) Cl4 (IV) with chiral bis-α-sulfanyloximes, the derivatives of the monoterpenoid (−)-α-pinene, were obtained. The complexes I and III are paramagnetic (μeff = 2.45 and 2.67 μB, respectively), II and IV are diamagnetic. According to IR spectroscopy, in the compounds I–IV the nearest environment of Cu and Pd atoms includes N, S, and Cl atoms. The values of μeff and parameters of ESR spectra of the solid phase and solutions of I and III show a binuclear structure of the Cu(II) complexes. Parameters of the 1H and 13C NMR spectra of compounds II and IV indicate the formation of binuclear Pd(II) complexes of C 2 symmetry and the closure of fivemembered chelate rings PdNSC2. The PdCl2 fragments are in transoid position. H2L1 and H2L2 are tetradentate bridging chelating ligands.
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Original Russian Text © T.E. Kokina, L.A. Sheludyakova, A.V. Tkachev, E.G. Boguslavskii, A.M. Agafontsev, N.B. Gorshkov, S.V. Larionov, 2011, published in Zhurnal Obshchei Khimii, 2011, Vol. 81, No. 8, pp. 1306–1312.
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Kokina, T.E., Sheludyakova, L.A., Tkachev, A.V. et al. Synthesis and properties of Cu(II) and Pd(ii) complexes with chiral bis-α-sulfanyl oxymes, the derivatives of natural monoterpene, α-pinene. Russ J Gen Chem 81, 1651–1657 (2011). https://doi.org/10.1134/S1070363211080123
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DOI: https://doi.org/10.1134/S1070363211080123