A Trigonal Prismatic Cobalt(II) Complex as a Single Molecule Magnet with a Reduced Contribution from Quantum Tunneling.
Alexander A PavlovDmitry Y AleshinSvetlana A SavkinaAlexander S BelovNikolay N EfimovJoscha NehrkornMykhaylo OzerovYan Z VoloshinYulia V NelyubinaValentin V NovikovPublished in: Chemphyschem : a European journal of chemical physics and physical chemistry (2019)
Herein, we report a new trigonal prismatic cobalt(II) complex that behaves as a single molecule magnet. The obtained zero-field splitting, which is also directly accessed by THz-EPR spectroscopy (-102.5 cm-1 ), results in a large magnetization reversal barrier U of 205 cm-1 . Its effective value, however, is much lower (101 cm-1 ), even though there is practically no contribution from quantum tunneling to magnetization relaxation.