Tuning the slow magnetic relaxation with the substituents in anilate bridged bis(dysprosium) complexes

Manna, Fabio; Oggianu, Mariangela; Galán-Mascarós, José Ramón; Pop, Flavia; Le Guennic, Boris; Mercuri, Maria Laura; Avarvari, Narcis

doi:10.1039/d4dt00175c

Dalton Trans.

2024

DOI: 10.1039/d4dt00175c

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Tuning the slow magnetic relaxation with the substituents in anilate bridged bis(dysprosium) complexes

Fabio Manna,

Mariangela Oggianu,

José Ramón Galán-Mascarós

et al.

Abstract: Dinuclear lanthanide complexes [((HB(pz)3)2Dy)2(μ-Th2An)] (1Dy) and [((HB(pz)3)2Dy)2(μ-ClCNAn)] (2Dy), based on the hydrotris(pyrazol-1-yl)borate (HBpz3-) scorpionate capping ligand and anilate (An2-) bridging linkers, namely homosubstituted dithiophene- and heterosubstituted chlorocyanoanilate, bearing electron-donating and...

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Cited by 3 publications

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Chiral Homodinuclear Dysprosium Macrocyclic Complexes with Single‐Molecule Magnetic Behaviours

Cheng,

Liu,

Gao

2024

Zeitschrift anorg allge chemie

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A pair of enantiomerically chiral dysprosium homodinuclear complexes: [(acac)4Dy2(R,R,R,R‐L)] (R‐Dy) and [(acac)4Dy2(S,S,S,S‐L)] (S‐Dy) (Hacac=acetylacetone) have been synthesized based on macrocyclic chiral ligands (R,R,R,R‐H2L or S,S,S,S‐H2L), derived from the [2+2] template condensation of 4‐tert‐butyl‐2,6‐diformylphenol, dysprosium acetylacetonate and (1R,2R)‐/(1S,2S)‐1,2‐cyclohexanediamine, respectively. Circular dichroism spectra confirms their enantiomeric chirality. Single‐crystal structures show two crystallographic independent dysprosium(III) ions have square antiprismatic coordination with different D4d local symmetry. Furthermore, the selected R‐Dy complex owns the slow magnetic relaxation behaviour with the ferromagnetic Dy3+⋅⋅⋅Dy3+ coupling.

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Chiral Homodinuclear Dysprosium Macrocyclic Complexes with Single‐Molecule Magnetic Behaviours

Cheng,

Liu,

Gao

2024

Zeitschrift anorg allge chemie

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Field-induced slow magnetic relaxation in a mononuclear Dy(III) complex with octahedral geometry

Sun,

Ding,

Cen

et al. 2024

Inorganic Chemistry Communications

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Thiophenyl Anilato-Based NIR-Emitting Lanthanide (LnIII = Er, Yb) Dinuclear Complexes

Manna,

Oggianu,

Mameli

et al. 2024

Molecules

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By combining ErIII and YbIII ions with 3,6-dithiophene-anilate (Th2An) and scorpionate hydrotris(pyrazol-1-yl)borate (HBpz3−) ligands new luminescent dinuclear complexes are obtained. The two materials formulated as [((HB(pz)3)2Yb)2(μ-th2An)]·4DCM·1.3H2O 1Yb and [((HB(pz)3)2Er)2(μ-th2An)]·4DCM·1.8H2O 1Er, respectively, have been structurally characterized by SC-XRD and PXRD studies. This study presents a comprehensive investigation of the photophysical properties of the Th2An ligand for the first time. Our findings reveal the crucial role of the thiophene anilate as an effective optical antenna, which sensitizes near-infrared (NIR)-emitting lanthanide ions, specifically ErIII and YbIII. The significant impact of vibrational quenching on the LnIII NIR emission efficiency has been also highlighted.

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Tuning the slow magnetic relaxation with the substituents in anilate bridged bis(dysprosium) complexes

Cited by 3 publications

References 52 publications

Chiral Homodinuclear Dysprosium Macrocyclic Complexes with Single‐Molecule Magnetic Behaviours

Chiral Homodinuclear Dysprosium Macrocyclic Complexes with Single‐Molecule Magnetic Behaviours

Field-induced slow magnetic relaxation in a mononuclear Dy(III) complex with octahedral geometry

Thiophenyl Anilato-Based NIR-Emitting Lanthanide (LnIII = Er, Yb) Dinuclear Complexes

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