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24 Results Found

  • Article
  • Open Access
9 Citations
4,587 Views
9 Pages

Field-Induced Slow Relaxation in a Dinuclear Dysprosium(III) Complex Based on 3-Methoxycinnamic Acid

  • Ouafa Khalfaoui,
  • Adel Beghidja,
  • Jérôme Long,
  • Chahrazed Beghidja,
  • Yannick Guari and
  • Joulia Larionova

We report the synthesis, structure, and magnetic properties of a new dinuclear dysprosium(III) complex based on a 3-methoxycinnamate ligand. The centrosymmetric complex exhibits a field-induced SMM behavior. In contrast to the previously reported lan...

  • Article
  • Open Access
6 Citations
3,343 Views
12 Pages

Relationship between the Coordination Geometry and Spin Dynamics of Dysprosium(III) Heteroleptic Triple-Decker Complexes

  • Tetsu Sato,
  • Satoshi Matsuzawa,
  • Keiichi Katoh,
  • Brian K. Breedlove and
  • Masahiro Yamashita

When using single molecule magnets (SMMs) in spintronics devices, controlling the quantum tunneling of the magnetization (QTM) and spin-lattice interactions is important. To improve the functionality of SMMs, researchers have explored the effects of...

  • Proceeding Paper
  • Open Access
1,320 Views
5 Pages

Synthesis of a Dysprosium(III) Complex with a Hexadentate Amine Ligand

  • Cristina González-Barreira,
  • Julio Corredoira-Vázquez,
  • Ana M. García-Deibe and
  • Matilde Fondo

15 November 2023

The use of polydentate macrocyclic Lewis bases is a way to contribute to determine the coordination number of metal complexes. In this sense, hexadentate N6 donors can help to achieve lanthanoid complexes with coordination number 8. But the geometry...

  • Article
  • Open Access
12 Citations
5,568 Views
13 Pages

Field-Induced Slow Magnetic Relaxation of Mono- and Dinuclear Dysprosium(III) Complexes Coordinated by a Chloranilate with Different Resonance Forms

  • Ryuta Ishikawa,
  • Shoichi Michiwaki,
  • Takeshi Noda,
  • Keiichi Katoh,
  • Masahiro Yamashita,
  • Kouki Matsubara and
  • Satoshi Kawata

We synthesized the dinuclear and mononuclear dysprosium(III) complexes [{Dy(Tp)2}2(Cl2An)]·2CH2Cl2 (1) and [Co(Cp)2][Dy(Tp)2(Cl2An)] (3), where Cl2An2− and Tp− are the chloranilate and hydrotris(pyrazolyl)borate ligand, respectively. In addition, the...

  • Feature Paper
  • Article
  • Open Access
14 Citations
5,672 Views
9 Pages

A class of two dinuclear dysprosium based complexes 1 and 2 were synthesized by employing salicyloylhydrazone derived pentadentate ligand (L). Structural analysis reveals that in complex 1, two DyIII centers are in muffin (Cs) coordination geometry w...

  • Article
  • Open Access
22 Citations
6,731 Views
18 Pages

Using the Singly Deprotonated Triethanolamine to Prepare Dinuclear Lanthanide(III) Complexes: Synthesis, Structural Characterization and Magnetic Studies

  • Ioannis Mylonas-Margaritis,
  • Julia Mayans,
  • Stavroula-Melina Sakellakou,
  • Catherine P. Raptopoulou,
  • Vassilis Psycharis,
  • Albert Escuer and
  • Spyros P. Perlepes

The 1:1 reactions between hydrated lanthanide(III) nitrates and triethanolamine (teaH3) in MeOH, in the absence of external bases, have provided access to the dinuclear complexes [Ln2(NO3)4(teaH2)2] (Ln = Pr, 1; Ln = Gd, 2; Ln = Tb, 3; Ln = Dy, 4; Ln...

  • Article
  • Open Access
10 Citations
4,533 Views
23 Pages

Asymmetric Dinuclear Lanthanide(III) Complexes from the Use of a Ligand Derived from 2-Acetylpyridine and Picolinoylhydrazide: Synthetic, Structural and Magnetic Studies

  • Diamantoula Maniaki,
  • Panagiota S. Perlepe,
  • Evangelos Pilichos,
  • Sotirios Christodoulou,
  • Mathieu Rouzières,
  • Pierre Dechambenoit,
  • Rodolphe Clérac and
  • Spyros P. Perlepes

10 July 2020

A family of four Ln(III) complexes has been synthesized with the general formula [Ln2(NO3)4(L)2(S)] (Ln = Gd, Tb, Er, and S = H2O; 1, 2 and 4, respectively/Ln = Dy, S = MeOH, complex 3), where HL is the flexible ditopic ligand N’-(1-(pyridin-2-...

  • Article
  • Open Access
13 Citations
4,455 Views
16 Pages

4f-Metal Clusters Exhibiting Slow Relaxation of Magnetization: A {Dy7} Complex with An Hourglass-like Metal Topology

  • Konstantinos N. Pantelis,
  • Panagiota S. Perlepe,
  • Spyridon Grammatikopoulos,
  • Christos Lampropoulos,
  • Jinkui Tang and
  • Theocharis C. Stamatatos

The reaction between Dy(NO3)3∙6H2O and the bulky Schiff base ligand, N-naphthalidene-2-amino-5-chlorobenzoic acid (nacbH2), in the presence of the organic base NEt3 has led to crystallization and structural, spectroscopic and magnetic characterizatio...

  • Article
  • Open Access
1,019 Views
13 Pages

A Dinuclear Dysprosium(III) Single Molecule Magnet of Benzo[h]quinolin-10-ol

  • Limin Zhou,
  • Hongling Lv,
  • Yuning Liang,
  • Dongcheng Liu,
  • Zaiheng Yao,
  • Shuchang Luo and
  • Zilu Chen

To develop single molecule magnets, a dinuclear complex [Dy2(HOBQ)4Cl6] (1) was prepared from the reaction of DyCl3 with benzo[h]quinolin-10-ol (HOBQ). Each Dy(III) ion shows a compressed octahedral geometry and the two Dy(III) ions in 1 are bridged...

  • Article
  • Open Access
2,101 Views
12 Pages

14 December 2022

Here, a new cyano-bridged 3d–4f compound, a Dy(III)–Fe(III) molecular assembly ([Dy(DMF)4(H2O)3(μ-CN)Fe(CN)5.H2O] (1)), having a structure consisting of neutral one-dimensional (1D) chains, as well as an unbound aqua molecule, was synt...

  • Article
  • Open Access
4 Citations
2,478 Views
16 Pages

Dy4, Dy5, and Ho2 Complexes of an N3O2 Aminophenol Donor: A Dy53-Peroxide Single Molecule Magnet

  • Julio Corredoira-Vázquez,
  • Paula Oreiro-Martínez,
  • Daniel Nieto-Pastoriza,
  • Ana M. García-Deibe,
  • Jesús Sanmartín-Matalobos and
  • Matilde Fondo

The reactivity of the new flexible potentially pentadentate N3O2 aminophenol ligand H4Lr (2,2′-((pyridine-2,6-diylbis(methylene))bis(azanediyl))diphenol) towards different dysprosium salts and holmium(III) nitrate was investigated. Accordingly,...

  • Feature Paper
  • Article
  • Open Access
4 Citations
2,145 Views
11 Pages

A DyIII Complex of a Pentadentate Schiff Base with Field-Induced Single-Ion Magnet Behaviour

  • Julio Corredoira-Vázquez,
  • Paula Oreiro-Martínez,
  • Ana M. García-Deibe,
  • Jesús Sanmartín-Matalobos and
  • Matilde Fondo

The influence of the solvent in the reaction of dysprosium(III) chloride hydrate with the N3O2 ligand H2L (2,6-bis(2-hydroxyphenyliminomethyl)pyridine) was studied To this end, the new mononuclear chloride complex [Dy(L)Cl(H2O)2] (1) was isolated in...

  • Article
  • Open Access
8 Citations
2,980 Views
14 Pages

Effect of Ligand Substitution on Zero-Field Slow Magnetic Relaxation in Mononuclear Dy(III) β-Diketonate Complexes with Phenanthroline-Based Ligands

  • Egor V. Gorshkov,
  • Denis V. Korchagin,
  • Elena A. Yureva,
  • Gennadii V. Shilov,
  • Mikhail V. Zhidkov,
  • Alexei I. Dmitriev,
  • Nikolay N. Efimov,
  • Andrew V. Palii and
  • Sergey M. Aldoshin

Herein, we report the synthesis, structure and magnetic properties of two mononuclear complexes of general formula [Dy(acac)3(L)], where L = 2,2-dimethyl-1,3-dioxolo[4,5-f][1,10] phenanthroline (1) or 1,10-phenanthroline-5,6-dione (2), and acac&minus...

  • Proceeding Paper
  • Open Access
3 Citations
1,903 Views
7 Pages

Attainment of Pentagonal-Bipyramidal LnIII Complexes from a Planar Pentadentate Ligand

  • Julio Corredoira-Vázquez,
  • Matilde Fondo,
  • Jesús Sanmartín-Matalobos and
  • Ana M. García-Deibe

The search for mononuclear lanthanoid-based single-ion magnets (SIMs) has increased the interest in some coordination environments with low coordination numbers, in combination with an axial symmetry, as they could maximize the anisotropy of complexe...

  • Article
  • Open Access
20 Citations
8,153 Views
17 Pages

Mononuclear Dysprosium(III) Complexes with Triphenylphosphine Oxide Ligands: Controlling the Coordination Environment and Magnetic Anisotropy

  • Stuart K. Langley,
  • Kuduva R. Vignesh,
  • Kerey Holton,
  • Sophie Benjamin,
  • Gary B. Hix,
  • Wasinee Phonsri,
  • Boujemaa Moubaraki,
  • Keith S. Murray and
  • Gopalan Rajaraman

We report the synthesis, structural and magnetic characterization of five mononuclear DyIII ion complexes using triphenylphosphine oxide as a monodentate ligand. They have formulae [DyIII(OPPh3)3(NO3)3] (1), [DyIII(OPPh3)4(NO3)2](NO3) (2), [DyIII(OPP...

  • Article
  • Open Access
2 Citations
2,530 Views
11 Pages

Zero-Field Slow Magnetic Relaxation in Binuclear Dy Acetylacetonate Complex with Pyridine-N-Oxide

  • Valeriya P. Shtefanets,
  • Gennady V. Shilov,
  • Denis V. Korchagin,
  • Elena A. Yureva,
  • Alexei I. Dmitriev,
  • Mikhail V. Zhidkov,
  • Roman B. Morgunov,
  • Nataliya A. Sanina and
  • Sergey M. Aldoshin

A new complex [Dy(C5H7O2)3(C5H5NO)]2·2CHCl3 (1) has been synthesized by the reaction of pyridine-N-oxide with dysprosium (III) acetylacetonate in an n-heptane/chloroform mixture (1/20). X-ray data show that each dysprosium atom is chelate-like...

  • Article
  • Open Access
10 Citations
3,579 Views
11 Pages

A Tetranuclear Dysprosium Schiff Base Complex Showing Slow Relaxation of Magnetization

  • Mamo Gebrezgiabher,
  • Sören Schlittenhardt,
  • Cyril Rajnák,
  • Assefa Sergawie,
  • Mario Ruben,
  • Madhu Thomas and
  • Roman Boča

A tetranuclear dysprosium Schiff base complex was isolated by reacting dysprosium chloride with 2-hydroxy-3-methoxybenzaldehyde and 2-(aminomethyl)pyridine in-situ under basic conditions. The isolated Dy(III) complex was characterized by elemental an...

  • Proceeding Paper
  • Open Access
1,780 Views
6 Pages

Dysprosium(III)-Mediated Carboxylate Formation from a Schiff Base

  • Julio Corredoira-Vázquez,
  • Cristina González-Barreira,
  • Ana M. García Deibe,
  • Jesús Sanmartín-Matalobos and
  • Matilde Fondo

14 November 2021

This work describes an uncommon new case of imine hydrolysis, leading to the formation of a carboxylate group. The conditions of the media that favor this conversion, which seem to be mediated by the presence of DyIII, are analyzed. The process bring...

  • Article
  • Open Access
2 Citations
2,720 Views
11 Pages

The Assembly of Grid-type Lanthanide Cluster

  • Jinsong Li,
  • Fan Zhang,
  • Xuefeng Guo,
  • Dan Liu and
  • Jianfeng Wu

A dicompartmental Schiff base ligand was synthesized and used for the assembly of a lanthanide grid-like complex. Dinuclear Dy2 and tetranuclear Dy4 complexes were isolated from the reaction of the ligand with different dysprosium salt. Single crysta...

  • Article
  • Open Access
4 Citations
3,029 Views
10 Pages

A Dy(III) Fluorescent Single-Molecule Magnet Based on a Rhodamine 6G Ligand

  • Lin Miao,
  • Mei-Jiao Liu,
  • Man-Man Ding,
  • Yi-Quan Zhang and
  • Hui-Zhong Kou

The complexes of lanthanide metals, especially dysprosium, can generally exhibit excellent magnetic properties. By means of modifying ligands, dual functions or even multi-functions can be achieved. Here, we synthesized an eight-coordinate Dy(III) co...

  • Article
  • Open Access
4 Citations
6,012 Views
10 Pages

Tuning of Hula-Hoop Coordination Geometry in a Dy Dimer

  • Yan Peng,
  • Valeriu Mereacre,
  • Christopher E. Anson and
  • Annie K. Powell

The reaction of DyCl3 with hydrazone Schiff base ligands and sodium acetate in the presence of triethylamine (Et3N) as base affords two dysprosium dimers: [Dy2(HL1)2(OAc)2(EtOH)(MeOH)] (1) and [Dy2(L2)2(OAc)2(H2O)2]·2MeOH (2). The DyIII ions in compl...

  • Article
  • Open Access
5 Citations
2,917 Views
12 Pages

A low-coordinate dinuclear dysprosium complex {[Dy(N3N)(THF)][LiCl(THF)]}2 (Dy2) with a double bridging ‘LiCl’ moiety and tris(amido)amine (N3N)3− anions as a blocking ligand is synthesized and characterized structurally and magnetically. Thanks to t...

  • Article
  • Open Access
5 Citations
1,584 Views
12 Pages

Rare Earth Metal Ion-Associates in Ln3+—CO32−—H2O System

  • Tatiana Litvinova,
  • Stepan Gerasev,
  • Vasiliy Sergeev and
  • Egor Lidanovskiy

24 February 2025

This study focused on the nature of rare earth metal complex compounds that can form during the carbonate–alkaline processing of industrial waste materials, such as phosphogypsum and red mud, at 70–100 °C and 1–10 atm. Experimen...

  • Article
  • Open Access
3 Citations
733 Views
24 Pages

This study reports an investigation of the synergistic extraction of dysprosium (Dy(III)) from aqueous media using a low-concentration, binary carrier mixture of Cyanex 272 and D2EHPA within an emulsion liquid membrane (ELM). Within the tested formul...