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Crystal and molecular structure of [Zn(II)]2(diacetoamidoglutarate)2 hexaaquo·2H2O, an unusual macrocyclic dimer with pentacoordinated Zn in a slightly distorted trigonal bipyramid

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Abstract

The crystal and molecular structure of the title compound, [Zn(II)]2(DAG)2, were determined and the results compared with those obtained for similar N-protected amino acids. In the crystalline state, 16-membered macrocyclic dimers are held together by hydrogen bridges in a triclinic\(P\bar 1\) lattice. The Zn(II) ions are pentacoordinated to oxygens in a slightly distorted trigonal bipyramid. The trigonal plane is formed by two carboxylic oxygens and an oxygen atom from a water molecule, whereas the apical positions are occupied by two other oxygens from the remaining coordinated water molecules. The ligands form bridges between cations providing the cyclic dimers, whereas similar but shorter systems form pseudo polymer sheets.

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Authors and Affiliations

  1. Instituto de Química, UNAM, Circuito Exterior, C. U., 04510, Coyoacán, D. F., Mexico

    J. Gómez-Lara & R. A. Toscano

  2. Area de Química, Universidad Autónoma Metropolitana, Unidad Azcapotzalco, Av. San Pablo 180, 02200, México, D.F.

    G. Negrón

  3. Escuela de Ciencias Químico Biológicas, Universidad Autónoma de Sinaloa, Culiacán, Sin., Mexico

    Eduardo Zárate M.

  4. Departamento de Química, Universidad Autónoma Metropolitana, Unidad Iztapalapa, Purísima y Michoacán, 09340, México, D.F.

    A. Campero

Authors
  1. J. Gómez-Lara
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  2. R. A. Toscano
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  3. G. Negrón
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  4. Eduardo Zárate M.
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  5. A. Campero
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Gómez-Lara, J., Toscano, R.A., Negrón, G. et al. Crystal and molecular structure of [Zn(II)]2(diacetoamidoglutarate)2 hexaaquo·2H2O, an unusual macrocyclic dimer with pentacoordinated Zn in a slightly distorted trigonal bipyramid. J Chem Crystallogr 24, 441–444 (1994). https://doi.org/10.1007/BF01666092

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  • DOI: https://doi.org/10.1007/BF01666092

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