Molecular spin relaxation of <i>f</i>-block metal complexes for quantum applications in a nutshell (Review article)

This is a critical report on the most recent progress towards implementation of single-ion/molecule magnets (SIM/SMMs) in molecular spin qubits. Short flash-back to the effect of lattice distortions on doubly degenerate spin state of manganites, mirrored by magnetic bistability of SMMs, is followed by a summary of recent progress in suppression of quantum decoherence in SIM/SMMs units by slowing the molecular spin-lattice relaxation and avoiding level crossings.