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Keywords:

  • distonic cations;
  • magnetic properties;
  • radicals;
  • spin-Peierls phase transition;
  • structure elucidation
Thumbnail image of graphical abstract

A magnetic coordination polymer, BBDTA⋅InBr4, undergoes a spin-Peierls-like phase transition at 250 K. X-ray crystal analysis illustrates that the lattice dimerization accompanies elongation and contraction of the In[BOND]N coordination bonds. Inhomogeneity of the spin and charge distribution on the organic radical increases progressively as the temperature decreases below the transition temperature.