Designing Sb − bridged polyoxotungstates for efficiently catalytic oxidation of benzyl alcohol

Journal of Catalysis, Год журнала: 2025, Номер unknown, С. 115957 - 115957

Опубликована: Янв. 1, 2025

Язык: Английский

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Recent advances in polyoxometalate-based single-molecule magnets

Coordination Chemistry Reviews, Год журнала: 2023, Номер 492, С. 215205 - 215205

Опубликована: Июнь 6, 2023

Язык: Английский

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Single-Molecule Magnet Behavior of Confined Dy(III) in a Mixed Heteroatom-Substituted Polyoxotungstate

Inorganic Chemistry, Год журнала: 2024, Номер 63(10), С. 4492 - 4501

Опубликована: Фев. 28, 2024

Two heteroatom-templated Dy(III)-confined polyoxotungstates [H2N(CH3)2]7Na7[Dy2(H2O)7(W4O9)(HPSeW15O54)(α-SeW9O33)2]·31H2O (1) and [H2N(CH3)2]14K2Na18{[Dy2(H2O)13W14O40]2[α-SeW9O33]4[HPSeW15O54]2}·44H2O (2) were synthesized by a one-pot aqueous reaction structurally characterized. The most distinctive structural feature of complexes 1 & 2 is the simultaneous presence both trivacant Keggin [α-SeW9O33]8– Dawson [HPSeW15O54]10– building blocks containing P(III)–Se(IV) heteroatoms. trimeric polyanion can be represented as fusion two units encapsulating [Dy2(H2O)7(W4O9)]12+ cluster. On other hand, hexameric polyoxoanions are described four [HPSeW15O54]10–, anchoring [Dy4(H2O)26W28O80]20+ magnetic investigation revealed significant anisotropy slow relaxation magnetization behavior for complex with phenomenological energy barrier, Ueff = 13.58 K in absence an external field, 24.57 500 Oe dc field. favors QTM process field shows field-induced 11.11 at 1500 applied in-depth analysis dynamics that follows Orbach well Raman pathways. Further, ab initio calculation studied confirms highly axial ground first excited states (containing pure highest mJ states) responsible observed single-molecule magnet (SMM) behavior. Remarkably, this example mixed heteroatom-based Dy(III)-substituted polyoxotungstate showing SMM

Язык: Английский

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Lanthanide-Based Single-Molecule Magnets Derived from Lacunary Polyoxometalates

Crystal Growth & Design, Год журнала: 2025, Номер unknown

Опубликована: Март 13, 2025

Язык: Английский

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Discovery and Isolation of Two Arsenotungastate Species: [As₄W₄₈O₁₆₈]^36– and [As₂W₂₁O₇₇(H₂O)₃]^22–

Inorganic Chemistry, Год журнала: 2023, Номер 62(8), С. 3338 - 3342

Опубликована: Фев. 15, 2023

Two novel arsenotungstate species, [As4W48O168]36– (1a) and [As2W21O77(H2O)3]22– (2a), have been successfully isolated under a one-pot synthetic method. 1a is the second largest cluster constructed from four {AsW12} clusters combined together. 2a can be described as lacunary sites of {As2W19} filled by {W2O8} units. Compounds 1 2 exhibit proton conductivity properties, value 5.0 × 10–3 S cm–1 at 98% relative humidity 75 °C. This work proves that lattice water molecules polyoxoanions participate in formation hydrogen bond, acting effective pathway for intermolecular conduction.

Язык: Английский

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Covalency versus magnetic axiality in Nd molecular magnets: Nd-photoluminescence, strong ligand-field, and unprecedented nephelauxetic effect in fullerenes NdM₂N@C₈₀ (M = Sc, Lu, Y)

Chemical Science, Год журнала: 2023, Номер 15(6), С. 2141 - 2157

Опубликована: Дек. 21, 2023

Nd-luminescence in NdM 2 N@C 80 (M = Sc, Lu, Y) reveals the relationship between strain, ligand-field splitting, nephelauxetic effect, and magnetic axiality.

Язык: Английский

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Hexameric polyoxotantalate with proton conduction properties

Chemical Communications, Год журнала: 2023, Номер 59(71), С. 10664 - 10667

Опубликована: Янв. 1, 2023

The first Fe-implanted polyoxotantalate (POTa), K12Na14H7.4[Fe10.7Ta1.3O8(OH)8(H2O)2(Ta6O19)6]·114.5H2O (1), has been obtained by self-assembly in alkaline solution. polyanion consists of six Lindqvist-type {Ta6} units linked together {Fe10.7Ta1.3}. compound not only possesses the highest nuclearity transition metal-oxygen cluster, but also degree polymerization POTa field to date. And 1 remarkable proton conduction.

Язык: Английский

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Luminescent lanthanide-based single-molecule magnets

Deleted Journal, Год журнала: 2023, Номер unknown, С. 93 - 173

Опубликована: Янв. 1, 2023

Over the past decade, groundbreaking integration of lanthanide ions into SMM design has undergone a profound transformation in this realm research. The spurred concerted effort to combine magnetic properties with other distinct physical attributes, resulting development truly multifunctional materials. Luminescent Lanthanide-Based Single Molecule Magnets (LL-SMMs) represent an exciting class versatile coordination compounds. These compounds consist intricately coordinated either organic or inorganic ligands, creation single cluster structures. structures showcase both luminescence and slow relaxation magnetization. This review summarizes latest advances achieved within dynamic field study. It delves fundamental guiding principles while drawing insightful comparisons between optical traits exhibited by best classes luminescent SMMs, namely those featuring Dy3+, Yb3+, Tb3+, Er3+, Nd3+, Ho3+ ions. Of particular significance is exploration potential establish connections properties. Additionally, special attention directed towards emerging which ingeniously thermometry, opening up new avenues innovation.

Язык: Английский

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Layered lanthanide phosphonates Ln(2-qpH)(SO₄)(H₂O)₂ (Ln = La, Ce, Pr, Nd, Sm): polymorphism and magnetic properties

Dalton Transactions, Год журнала: 2023, Номер 52(34), С. 11913 - 11921

Опубликована: Янв. 1, 2023

Polymorphic layered lanthanide compounds α-, β-, γ-Ln(2-qpH)(SO 4 )(H 2 O) (α-Ln = Sm; β-Ln Pr, Nd, γ-Ln La, Ce, Sm) are reported, and distinct magnetic dynamics is found for β-Nd γ-Nd .

Язык: Английский

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Assembly of organophosphonate-functionalized Polyoxometalates and in situ Nd-containing derivatives

Journal of Luminescence, Год журнала: 2023, Номер 263, С. 120018 - 120018

Опубликована: Июнь 25, 2023

Язык: Английский

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