AI Article Synopsis

  • The study explores the formation of a distorted octahedral complex, [Fe(bipy[9]CPP){H B(pyz)}], using a bipyridyl-embedded cycloparaphenylene nanohoop.
  • The complex exhibits spin-crossover behavior at a lower temperature (T = 130 K) compared to a related compound featuring a conventional bipyridyl ligand, which shows SCO at 160 K.
  • Computational analysis suggests that the unique curvature of the nanohoop significantly influences the spin-crossover properties of the iron(II) complex, indicating potential for tuning these behaviors through nanoparticle design.

Article Abstract

Addition of the bipyridyl-embedded cycloparaphenylene nanohoop bipy[9]CPP to [Fe{H B(pyz) }] (pyz=pyrazolyl) produces the distorted octahedral complex [Fe(bipy[9]CPP){H B(pyz) } ] (1). The molecular structure of 1 shows that the nanohoop ligand contains a non-planar bipy unit. Magnetic susceptibility measurements indicate spin-crossover (SCO) behaviour with a T of 130 K, lower than that of 160 K observed with the related compound [Fe(bipy){H B(pyz) } ] (2), which contains a conventional bipy ligand. A computational study of 1 and 2 reveals that the curvature of the nanohoop leads to the different SCO properties, suggesting that the SCO behaviour of iron(II) can be tuned by varying the size and diameter of the nanohoop.

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Source
http://dx.doi.org/10.1002/anie.202013374DOI Listing

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