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Related Experiment Videos

Dichlorobis(DL-proline-kappaO)zinc(II).

Martin Lutz1, Ruud Bakker

  • 1Department of Crystal and Structural Chemistry, Utrecht University, Padualaan 8, 3584 CH Utrecht, The Netherlands. m.lutz@chem.uu.nl

Acta Crystallographica. Section C, Crystal Structure Communications
|December 31, 2002
PubMed
Summary

This study details the crystal structure of a zinc chloride proline complex. Molecules form linear chains through hydrogen bonding, with consistent proline configurations within each chain.

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Area of Science:

  • Coordination Chemistry
  • Crystallography
  • Supramolecular Chemistry

Background:

  • Zinc chloride complexes are investigated for their structural properties.
  • Proline, an amino acid, plays a role in forming coordination compounds.
  • Understanding crystal packing and intermolecular forces is crucial in solid-state chemistry.

Purpose of the Study:

  • To elucidate the crystal structure of the title compound, [ZnCl(2)(C(5)H(9)NO(2))(2)].
  • To analyze the coordination environment around the zinc atom.
  • To investigate the role of hydrogen bonding in the self-assembly of the complex.

Main Methods:

  • Single-crystal X-ray diffraction was employed to determine the molecular and crystal structure.
  • Analysis of the crystal structure revealed the space group and atomic positions.

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  • Hydrogen bonding interactions were identified and characterized.

    • Main Results:

    • The compound [ZnCl(2)(C(5)H(9)NO(2))(2)] crystallizes in the centrosymmetric space group C2/c.
    • The zinc atom is located on a twofold axis, coordinating with chloride ions and proline residues.
    • Two proline residues within a single complex exhibit the same absolute configuration.
    • Molecules self-assemble into linear chains along the crystallographic b direction via hydrogen bonding.
    • Proline residues within these chains maintain an identical absolute configuration.

    Conclusions:

    • The crystal structure provides insights into the coordination preferences of zinc with proline.
    • Hydrogen bonding is a key factor driving the formation of one-dimensional supramolecular chains.
    • The consistent absolute configuration of proline residues has implications for chiral recognition and material properties.