AI Article Synopsis
- Researchers created tetranuclear clusters of lanthanide (Ln) elements by combining specific salts with a unique phosphinic acid and pivalic acid.* -
- X-ray studies confirmed the structure of these complexes, which included erbium (Er), dysprosium (Dy), and terbium (Tb), showing distinct magnetic properties.* -
- Direct-current studies indicated ferromagnetic interactions between Dy and Tb, while Er exhibited antiferromagnetic behavior; both exhibited characteristics of single-molecule magnets.*
Article Abstract
Tetranuclear [2 × 2] square-grid-like Ln clusters have been synthesized by reacting LnCl·6HO salts with bis[α-hydroxy(-bromophenyl)methyl]phosphinic acid [RPOH, where R = CH(OH)PhBr] and pivalic acid. Single-crystal X-ray diffraction studies show the formation of [MeN][Ln(μ-η:η-POR)(η-COBu)(μ-CO)] [Ln = Er (), Dy (), and Tb ()]. Direct-current studies reveal significant ferromagnetic interactions between Dy in and Tb in and an antiferromagnetic interaction between Er in . Dynamic magnetic susceptibility measurements confirm a single-molecule magnet (SMM) behavior in both 0 and 1200 Oe applied magnetic fields for . Complexes and show single molecular toroic (SMT) behavior with a mixed magnetic moment.
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| http://dx.doi.org/10.1021/acs.inorgchem.4c02567 | DOI Listing |
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