Complexes of Cobalt(II) Iodide with Pyridine and Redox Active 1,2-Bis(arylimino)acenaphthene: Synthesis, Structure, Electrochemical, and Single Ion Magnet Properties

Molecules. 2020 Apr 28;25(9):2054. doi: 10.3390/molecules25092054.

Abstract

Complexes [(dpp-BIAN)0CoIII2]·MeCN (I) and [(Py)2CoI2] (II) were synthesized by the reaction between cobalt(II) iodide and 1,2-bis(2,6-diisopropylphenylimino)acenaphthene (dpp-BIAN) or pyridine (Py), respectively. The molecular structures of the complexes were determined by X-ray diffraction. The Co(II) ions in both compounds are in a distorted tetrahedral environment (CoN2I2). The electrochemical behavior of complex I was studied by cyclic voltammetry. Magnetochemical measurements revealed that when an external magnetic field is applied, both compounds exhibit the properties of field-induced single ion magnets.

Keywords: acenaphtenediimine; cobalt(II) complexes; cyclic voltammetry; dpp-bian; redox active ligand; single ion magnet.

MeSH terms

  • Acenaphthenes / chemistry*
  • Anisotropy
  • Cobalt / chemistry*
  • Electrochemical Techniques*
  • Iodides / chemistry*
  • Ions*
  • Ligands
  • Magnetics*
  • Molecular Conformation
  • Molecular Structure
  • Oxidation-Reduction
  • Pyridines / chemistry*
  • Temperature
  • X-Ray Diffraction

Substances

  • Acenaphthenes
  • Iodides
  • Ions
  • Ligands
  • Pyridines
  • Cobalt
  • pyridine