Structures of substituted di-aryl-1,3,4-oxadiazole derivatives: 2,5-bis(pyridyl)- and 2,5-bis(aminophenyl)-substitution

  • Emmerling F
  • Orgzall I
  • Reck G
 et al. 
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Abstract

Crystal structures of four different di-aryl-1,3,4-oxadiazole compounds (aryl = 2-pyridyl-, 3-pyridyl-, 2-aminophenyl-, 3-aminophenyl-) are determined. Crystallization of di(2-pyridyl)-1,3,4-oxadiazole yielded monoclinic and triclinic polymorphs. The structures are characterized by the occurrence of π-π interactions. Additionally, in case of the aminophenyl compounds intra- as well as intermolecular hydrogen bonds are found that influence the packing motif as well. Since these molecules are often used as ligands in metal-organic complexes similarities and differences of the molecular conformation between the molecules in the pure crystals and that of the ligands in the complexes are discussed. © 2006 Elsevier B.V. All rights reserved.

Author-supplied keywords

  • 1,3,4-Oxadiazole
  • Crystal structure
  • Hydrogen bonds
  • Molecular conformation

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Authors

  • Franziska Emmerling

  • Ingo Orgzall

  • Günter Reck

  • Burkhard W. Schulz

  • Sabine Stockhause

  • Burkhard Schulz

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