Single-ion magnet behaviour of heptacoordinated Fe(II) complexes: on the importance of supramolecular organization

Arun Kumar Bar (1) , Céline Pichon (2) , N. Gogoi (2) , Carine Guyard-Duhayon (2) , S. Ramasesha (3) , J.-P. Sutter (2)

1 National Institute of Science Education and Research
2 LCC - Laboratoire de chimie de coordination
3 Solid State and Structural Chemistry

Supramolecular organization of a metal complex may significantly contribute to the magnetization dynamics of mononuclear SMMs. This is illustrated for a heptacoordinated Fe(II) complex with rather moderate Ising-type anisotropy for which a slow magnetization relaxation with significant energy barrier was reached when this complex was properly organized in the crystal lattice. Incidentally, it is the first example of single-ion magnet behaviour of Fe(II) in a pentagonal bipyramid surrounding.

Domaines: Chimie de coordination

Arun Kumar Bar, Céline Pichon, N. Gogoi, Carine Guyard-Duhayon, S. Ramasesha, et al.. Single-ion magnet behaviour of heptacoordinated Fe(II) complexes: on the importance of supramolecular organization. Chemical Communications, 2015, 51 (17), pp.3616-3619. ⟨10.1039/c4cc10182k⟩. ⟨hal-01923980⟩