Wyniki wyszukiwania dla: bis-tetrazol

• Synthesis and Spectroscopic Properties of New Bis-tetrazoles

  Publikacja

  • A. Pazik
  • A. Skwierawska

  - Journal of Inclusion Phenomena and Macrocyclic Chemistry - Rok 2013

  Syntheses of N,N'-phenyltetrazole podands link with aliphatic chains containing oxygen, nitrogen and sulphur atoms, are described. The complexing properties of these compounds towards metal cations (Fe2+, Cu2+, Zn2+, Co2+, Ni2+) were investigated by absorption and infrared spectroscopy. The UV-Vis titrations were performed to estimate the stability constant values of the respective complexes with Cu2+ ion. Changes in UV-Vis absorption...

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• Chromogenic derivatives of new bis(phenylhydrazono-1H-tetrazol-5-yl-acetonitriles) - synthesis and properties

  Publikacja

  • A. Pazik
  • A. Skwierawska

  - SUPRAMOLECULAR CHEMISTRY - Rok 2012

  Derivatives of bis(phenylhydrazono-1H-tetrazol-5-yl-acetonitriles) with oxygen and sulphur atoms in the structure of aliphatic chains were successfully synthesised. The correlation between the ligand structure and its complexation properties was investigated by absorption spectroscopy. The formation of complexes of presented compounds with metal cations (Cu2+, Ni2+, Zn2+, Co2+, Fe2+ and Pb2+) was studied. Ligands 5-8 were additionally...

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• Selective detection of F- by chromogenic tetrazole receptor

  Publikacja

  • A. Pazik
  • A. Skwierawska

  - SUPRAMOLECULAR CHEMISTRY - Rok 2013

  A chromogenic anion host 4, containing two amide functionalities linked to azo dye and tetrazole rings was synthesized and its complexes with various anions were investigated. The results show that receptor 4 can recognize selectively biologically important F- ion. The binding affinity for F- was investigated by naked-eye colour change, UV-Vis and 1H NMR spectroscopy. Addition F- ion in CH3CN and DMSO to receptor 4 cause a colour...

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