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Coordination complexes of l-azetidine-2-carboxylic acid with platinum(II) and palladium(II)

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Summary

The complexes K[Pt(l-aze)Cl2, [Pt(l-aze)2] and [Pd(l-aze)2] (l-aze = l-azetidine-2-carboxylate) were prepared. X-ray structures show that [Pt(l-aze)2] and [Pd(l-aze)2] are isomorphous, having a planar tetragonal geometry with a trans configuration around the Pt and Pd atoms. Slight puckerings of the MN(1)N(11)O(11) chelate ring (M = Pt or Pd) and the azetidine ring were observed. The circular dichroism (c.d.) spectra of the complexes in aqueous solution agree with the structures found in the solid state as far as the hexadecant rule is concerned, giving, for the trans configuration of [M(l-ia)2] (where ia = imino acid), the profile of the c.d. signs for the three predominant d-d transitions as: +,-,-. I.r., conductivity and n.m.r. measurements are also reported and are in accord with the proposed structures.

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Authors and Affiliations

  1. University of Ioannina, Department of Chemistry, Laboratory of Inorganic and General Chemistry, 45 110, Ioannina, Greece

    Evangelia Voureka & John M. Tsangaris

  2. NCSR ‘Demokritos’, Institute of Materials Science, 15 310 Aghia Paraskevi, Attikis, Greece

    Aris Terzis & Catherine P. Raptopoulou

Authors
  1. Evangelia Voureka
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  2. John M. Tsangaris
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  3. Aris Terzis
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  4. Catherine P. Raptopoulou
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Voureka, E., Tsangaris, J.M., Terzis, A. et al. Coordination complexes of l-azetidine-2-carboxylic acid with platinum(II) and palladium(II). Transition Met Chem 21, 244–249 (1996). https://doi.org/10.1007/BF00165976

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  • DOI: https://doi.org/10.1007/BF00165976

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