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Crystal structure of the Λ-[4M] enantiomer of cis-diaqua-bis(1,3-dimethylpteridine-2,4(1H,3H)-dione-N5,O4) copper(II) perchlorate monohydrate

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Abstract

Single-crystal X-ray diffraction studies have been performed on the complex cis-diaqua-bis(1,3-dimethylpteridine-2,4(1H,3H)-dione-O4,N5) copper(II) perchlorate monohydrate, [Cu(DLM)2(H2O)2](ClO4)2 · H2O. This compound crystallizes in the orthorhombic system, P212121 space group, Z = 4 with a = 8.749(1) Å, b = 14.213(1) Å, c = 21.200(2) Å, and V = 2636.2(4) Å3. The metal ion is surrounded in octahedral geometry by two mutually quasi-perpendicular N5,O4-coordinated lumazine chelators with the O4 atoms trans and the N5 atoms cis. The polyhedron is completed by two cis-coordinated water molecules. The absolute configuration of the complex can be described, following Bailar's nomenclature, as the enantiomer Λ of the stereoisomer 4M. A three-dimensional hydrogen-bond network is defined by water molecules, perchlorate anions, and the O2 of the pteridine A.

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Authors and Affiliations

  1. Departamento de Química Inorgánica y Orgánica, Universidad de Jaén, 23071, Jaén (, España

    Francisco Hueso-Ureña, Sonia B. Jiménez-Pulido & Miguel N. Moreno-Carretero

  2. Departamento de Química Inorgánica, Universidad de Granada, 18071-, Granada (, España

    Miguel Quirós-Olozábal & Juan M. Salas-Peregrín

Authors
  1. Francisco Hueso-Ureña
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  2. Sonia B. Jiménez-Pulido
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  3. Miguel N. Moreno-Carretero
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  4. Miguel Quirós-Olozábal
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  5. Juan M. Salas-Peregrín
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Hueso-Ureña, F., Jiménez-Pulido, S.B., Moreno-Carretero, M.N. et al. Crystal structure of the Λ-[4M] enantiomer of cis-diaqua-bis(1,3-dimethylpteridine-2,4(1H,3H)-dione-N5,O4) copper(II) perchlorate monohydrate. Journal of Chemical Crystallography 29, 571–574 (1999). https://doi.org/10.1023/A:1009548803103

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