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Keywords:

  • Liquid crystals (LC);
  • Magnetic fields;
  • Paramagnetism;
  • Photoinduced alignment

The iron(II) complex [Fe(3C16-L)2(NCS)2] (see Figure) exhibits three coexisting physical properties due to its geometric flexibility. It shows liquid-crystal behavior in the temperature range 345–400 K, spin-crossover behavior (T1/2 = 217 K) between high-spin and low-spin states, and photoinduced spin transition (T(LIESST; light-induced excited spin state trapping) = 61 K) from a low-spin state to a metastable high-spin state.