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Article Dans Une Revue Crystal Growth & Design Année : 2023

Probing the Magnetization Relaxation Dynamics of Four-Coordinate Lanthanide(III) Complexes

Résumé

The reaction of bulky trimethylsilylanilide (N-TMSA) ligand with various lanthanide salts led us to isolate unusual and unique four-coordinate monomeric Ln(III) complexes which are challenging to isolate and not surprisingly rare in the literature. The single crystal X-ray diffraction unveils that all the complexes are monomeric and isostructural with the general molecular formula of [Ln(N-TMSA)3(THF)] where Ln = Dy (1) or Yb (2). Both complexes are found to possess distorted tetrahedral geometry. For all the complexes, detailed dc and ac susceptibility measurements were performed and both 1 and 2 show frequency-dependent out-of-phase susceptibility signals only in the presence of an optimum external magnetic field. The experimental observations are well supported by theoretical calculations and developed magneto-structural correlation using the various model complexes.

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Chimie
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Dates et versions

hal-03969144 , version 1 (02-02-2023)

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Dipanti Borah, Amaleswari Rasamsetty, Deepanshu Chauhan, Shalini Tripathi, Felix Houard, et al.. Probing the Magnetization Relaxation Dynamics of Four-Coordinate Lanthanide(III) Complexes. Crystal Growth & Design, 2023, 23 (1), pp.629-636. ⟨10.1021/acs.cgd.2c01246⟩. ⟨hal-03969144⟩
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