Five-Coordinated Dysprosium Single-Molecule Magnet Functionalized by the SMe Group.

Area of Science:

• Inorganic Chemistry
• Materials Science
• Quantum Computing

Background:

• Single-molecule magnets (SMMs) are crucial for advancing quantum computing and data storage.
• Dysprosium(III) complexes are promising candidates for SMMs due to their large magnetic anisotropy.

Purpose of the Study:

• To design and synthesize a mononuclear dysprosium(III) complex with potential SMM properties.
• To investigate the magnetic properties and relaxation pathways of the synthesized complex.
• To explore the feasibility of surface deposition for device applications.

Main Methods:

• Synthesis of a five-coordinate mononuclear Dy(III) complex with C4 geometry.
• Magnetic susceptibility measurements to determine the anisotropy barrier.
• Ab initio calculations to elucidate magnetic relaxation mechanisms.

Main Results:

• The synthesized complex [Dy(X)(DBP)2(TMG(H))2] (1) exhibits a large anisotropy barrier of 432 cm⁻¹.
• Strong interaction between the phenolate ligand and Dy(III) ion contributes to the high barrier.
• Ab initio calculations identified the second excited state as the primary relaxation pathway.
• The terminal SMe group enables strong binding to gold surfaces.

Conclusions:

• The designed Dy(III) complex demonstrates significant potential as a single-molecule magnet.
• The complex's structure facilitates surface functionalization for potential integration into electronic devices.
• This work contributes to the development of molecular nanomagnets for quantum information technologies.