Mondal Suman, Chauhan Deepanshu, Guizouarn Thierry, Pointillart Fabrice, Rajaraman Gopalan, Steiner Alexander, Baskar Viswanathan
School of Chemistry, University of Hyderabad, Hyderabad 500046, India.
Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India.
Inorg Chem. 2024 Nov 25;63(47):22338-22348. doi: 10.1021/acs.inorgchem.4c02567. Epub 2024 Sep 12.
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.
通过使LnCl·6H₂O盐与双[α-羟基（-溴苯基）甲基]次膦酸[RPOH，其中R = CH(OH)PhBr]和新戊酸反应，合成了四核[2×2]方格状Ln簇合物。单晶X射线衍射研究表明形成了[Me₄N][Ln(μ-η:η-POR)(η-CO₂Bu)(μ-CO)] [Ln = Er (), Dy (), 和Tb ()]。直流研究揭示了 中Dy与 中Tb之间存在显著的铁磁相互作用，以及 中Er之间存在反铁磁相互作用。动态磁化率测量证实了 在0和1200 Oe外加磁场下均表现出单分子磁体（SMM）行为。配合物 和 表现出具有混合磁矩的单分子环形（SMT）行为。
