Peculiarities of the reactions between early lanthanide(III) ions and an anionic porphyrin

Melitta Patrícia Kiss, Muhammad Imran, Csanád Szentgyörgyi, Zsolt Valicsek, Ottó Horváth

Research output: Contribution to journalArticle

3 Citations (Scopus)


Insertion of early lanthanide(III) ions into the coordination cavity of porphyrins is a slow and complicated process in aqueous solution, originating from the stability of their aqua complexes and their possible oligomerization. The presence of potential axial ligands can accelerate the coordination of the first porphyrin, but it can hinder the connection of a further porphyrin. Lanthanide ions may coordinate not only to the pyrrolic nitrogens of porphyrins but, under kinetic control, also to the peripheral substituents possessing O-donor atoms. In the case of such anionic porphyrins, the coordination position of metal ions can be influenced by the change of temperature.

Original languageEnglish
Pages (from-to)22-25
Number of pages4
JournalInorganic Chemistry Communications
Publication statusPublished - Oct 2014


  • Axial enhancement or hindrance
  • Early lanthanide(III) ions
  • Out-of-plane metalloporphyrins
  • Simultaneous metal and ligand control
  • Tail-to-tail oligomerization

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Inorganic Chemistry
  • Materials Chemistry

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