Self-Assembled Lanthanide Phosphinate Square Grids (Ln = Er, Dy, and Tb): Dy4 Shows SMM/SMT and Tb4 SMT Behavior

Mondal, Suman, Chauhan, Deepanshu, Guizouarn, Thierry, Pointillart, Fabrice, Rajaraman, Gopalan, Steiner, Alexander ORCID: 0000-0002-4315-6123 and Baskar, Viswanathan (2024) Self-Assembled Lanthanide Phosphinate Square Grids (Ln = Er, Dy, and Tb): Dy4 Shows SMM/SMT and Tb4 SMT Behavior Inorganic chemistry, 63 (47). pp. 22338-22348. ISSN 0020-1669, 1520-510X

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Abstract

Tetranuclear [2 × 2] square-grid-like Ln^III clusters have been synthesized by reacting LnCl₃·6H₂O salts with bis[α-hydroxy(p-bromophenyl)methyl]phosphinic acid [R₂PO₂H, where R = CH(OH)PhBr] and pivalic acid. Single-crystal X-ray diffraction studies show the formation of [Me₄N]₂[Ln₄(μ₂-η¹:η¹-PO₂R₂)₈(η²-CO₂Bu^t)₄(μ₄-CO₃)] [Ln = Er (1), Dy (2), and Tb (3)]. Direct-current studies reveal significant ferromagnetic interactions between Dy^III in 2 and Tb^III in 3 and an antiferromagnetic interaction between Er^III in 1. Dynamic magnetic susceptibility measurements confirm a single-molecule magnet (SMM) behavior in both 0 and 1200 Oe applied magnetic fields for 2. Complexes 2 and 3 show single molecular toroic (SMT) behavior with a mixed magnetic moment.

Item Type:	Article
Uncontrolled Keywords:	3402 Inorganic Chemistry, 34 Chemical Sciences
Divisions:	Faculty of Science & Engineering Faculty of Science & Engineering > School of Physical Sciences
Depositing User:	Symplectic Admin
Date Deposited:	13 Dec 2024 13:06
Last Modified:	28 Feb 2026 16:45
DOI:	10.1021/acs.inorgchem.4c02567
Related Websites:	Author Publisher
URI:	https://livrepository.liverpool.ac.uk/id/eprint/3189125
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