Abstract of Publication No. 461
Reto Basler, Colette Boskovic, Grégory Chaboussant, Hans U. Güdel, Mark Murrie, Stefan T. Ochsenbein and Andreas Sieber
We review our recent work in the field of molecular spin clusters and
single-molecule magnets, showing how inelastic neutron scattering (INS) can be
used to determine magnetic exchange interactions and anisotropy splittings. A
general introduction to neutron scattering precedes selected examples, building
upon the first determination of exchange coupling in a transition metal complex
using INS, through anisotropic exchange in cobalt(II) spin
clusters to the determination of exchange interactions in a dodecanuclear
nickel(II) wheel. The strength of INS for the accurate
determination of anisotropy splittings in single-molecule magnets is revealed.
Not only can one determine the axial zero-field splitting parameter D,
which plays a key role in single-molecule magnet behavior, but also higher-order
terms important in understanding the quantum tunneling behavior. Finally, we
review two of our synthetic approaches towards new single-molecule magnets based
on nickel, manganese, and iron.