Effects of secondary ligand and excitation on the thermally induced and photoinduced valence tautomerism semiquinonate - catecholate

Panče Naumov, Alexei A. Belik

Research output: Contribution to journalArticle


Twelve mixed cobalt dioxolene complexes with various amines or pyridyl secondary ligands were prepared and characterized, two of which exhibit thermal valence tautomeric phase transitions. When these two complexes are excited in situ with a nanosecond Nd:YAG source (532 nm) at 10 K, the magnetization of their low temperature phases exhibits a combination of heating and photoexcitation effects. Time-dependence on the applied temperature and laser intensity of the thermal decay, concentration saturation and equilibration effects was observed for the photoinduced phase. It is concluded that laser heating effects should be explicitly accounted for when studying the low-temperature photoinduced valence tautomerism.

Original languageEnglish (US)
Pages (from-to)465-469
Number of pages5
JournalInorganic Chemistry Communications
Issue number5
StatePublished - May 1 2008



  • Charge transfer
  • Ligand effects
  • Magnetic properties
  • O ligands
  • Phase transitions

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Inorganic Chemistry
  • Materials Chemistry

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