Enhanced single-molecule magnetism in dysprosium complexes of a pristine cyclobutadienyl ligand

Journal article

AbstractIntact transfer of the cyclobutadienyl ligand [C₄(SiMe₃)₄]2− to yttrium and dysprosium (M) produces the half-sandwich complexes [M{η⁴-C₄(SiMe₃)₄}(BH₄)₂(THF)]− as coordination polymers with bridging sodium or potassium ions. The dysprosium versions are single-molecule magnets (SMMs) with energy barriers of 371(7) and 357(4) cm−1, respectively. The pristine cyclobutadienyl ligands provide a strong axial crystal field that enhances the SMM properties relative to related cyclopentadienyl compounds.Abstract Intact transfer of the cyclobutadienyl ligand [C₄(SiMe₃)₄]2− to yttrium and dysprosium (M) produces the half-sandwich complexes [M{η⁴-C₄(SiMe₃)₄}(BH₄)₂(THF)]− as coordination polymers with bridging sodium or potassium ions. The dysprosium versions are single-molecule magnets (SMMs) with energy barriers of 371(7) and 357(4) cm−1, respectively. The pristine cyclobutadienyl ligands provide a strong axial crystal field that enhances the SMM properties relative to related cyclopentadienyl compounds

Authors: Durrant, JP; Tang, J; Mansikkamäki, A; Layfield, RA

• Publication status: Published
• Peer review status: Peer reviewed
• Publisher: Royal Society of Chemistry
• Journal: Chemical Communications
• Volume: 56
• Issue: 34
• Pages: 4708-4711
• Publication date: 2020-04-30
• DOI: 10.1039/d0cc01722a
• EISSN: 1364-548X
• ISSN: 1359-7345
• Language: English
• Keywords: Physics; Receptor; Nanotechnology; Dysprosium; Materials science; Chemistry; Ligand (biochemistry); Condensed matter physics; Molecule; Magnetism; Organic chemistry; Inorganic chemistry; Crystallography; Biochemistry