Multidimensional transition metal complexes based on 3-amino-1H-1,2,4-triazole-5-carboxylic acid: from discrete mononuclear complexes to layered materials

Molecules. 2015 Jul 7;20(7):12341-63. doi: 10.3390/molecules200712341.

Abstract

The synthesis and structural characterization of five transition metal complexes with different dimensionality and incorporating residues of 3-amino-1H-1,2,4-triazole-5-carboxylic acid (H2atrc) is reported: [Zn(Hatrc)2(H2O)] (1), [Mn(Hatrc)2(H2O)2]·2H2O (2), [Fe2(Hatrc)4(OH)2]·6H2O (3), [Cd(Hatrc)2(H2O)]n (4), and [Mn(atrc)(H2O)]n·nH2O (5). These materials could be prepared from solution (1-3), diffusion (4), or hydrothermal reactions (5) with various anions and L:M ratios. Structural details were revealed by single crystal X-ray diffraction. The discrete units composing compounds 1-3, the polymeric 1D chain of 4 and the 2D layer of 5 are further extended into 3D supramolecular architectures through the formation of hydrogen bonds.

Keywords: 1,2,4-triazole; crystal structures; supramolecular organization.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Carboxylic Acids / chemistry*
  • Ligands
  • Metals, Heavy / chemistry*
  • Models, Molecular
  • Polymers / chemistry
  • Triazoles / chemistry*

Substances

  • 3-amino-1H-1,2,4-triazole
  • Carboxylic Acids
  • Ligands
  • Metals, Heavy
  • Polymers
  • Triazoles