Novel di-substituted hexaaza-macrocyclic ligands bearing hydrazine and/or indole arms: synthesis, sensor properties and catalytic activity

Rodrigo Lamelas, Adrián Fernández-Lodeiro, Rufina Bastida, Elena Labisbal, Alejandro Macías, Cristina Núñez, Carlos Lodeiro, Matilde Yáñez

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)

Abstract

Novel trans-disubstituted hexaaza-macrocyclic ligands L1, L2and L3were successfully prepared by the alkylation of the trans secondary amines presented in L with ethyl acetate, acetohydrazide and indole groups, respectively. The coordination properties of compounds L2and L3towards different transition, post-transition and lanthanide metal ions were explored. Their responses towards some of these cations were also evaluated in solution by UV–vis absorption and emission spectroscopy. Crystals of [NaL1]Br·2H2O suitable for X-ray diffraction were obtained by slow evaporation of an acetonitrile solution of compound L1, showing an anti conformation between the methyl groups and the pendants arms in trans. The catalytic activity of L2and their nitrate complexes (Co2+, Ni2+, Cu2+, Zn2+) towards the decomposition of hydrogen peroxide (catalase activity) was also studied.

Original languageEnglish
Pages (from-to)34-43
Number of pages10
JournalInorganica Chimica Acta
Volume456
DOIs
Publication statusPublished - 1 Jan 2017

Keywords

  • Catalase
  • Colorimetric
  • Hydrazine
  • Indole
  • Macrocycle
  • Metal ion probes

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