Review
Chemistry, Multidisciplinary
Vijay S. Parmar, David P. Mills, Richard E. P. Winpenny
Summary: Recent studies have shown that mononuclear lanthanide (Ln) complexes can be high-performing single-molecule magnets (SMMs). The focus is on mononuclear Dy-III alkoxide and aryloxide SMMs with coordination numbers up to eight, covering synthesis, solid-state structures and magnetic attributes. Brief overviews are also provided of mononuclear Tb-III, Ho-III, Er-III and Yb-III alkoxide and aryloxide SMMs.
CHEMISTRY-A EUROPEAN JOURNAL
(2021)
Review
Chemistry, Multidisciplinary
Chen Wang, Yin-Shan Meng, Shang-Da Jiang, Bing-Wu Wang, Song Gao
Summary: Single-molecule magnets (SMMs) with slow magnetization relaxation and purely molecular hysteresis are promising for information storage, spintronics, and quantum computing. Improving the blocking temperature (T-B) and effective relaxation barrier (U-eff) is crucial for their application. Multidisciplinary research has achieved SMMs with a U-eff up to 2,000 K and a T-B in the liquid nitrogen region. Enhancing the uniaxiality of magnetic anisotropy is critical for high-performance SMMs.
SCIENCE CHINA-CHEMISTRY
(2023)
Review
Chemistry, Multidisciplinary
Riccardo Marin, Gabriel Brunet, Muralee Murugesu
Summary: Single-molecule magnets play a crucial role in quantum information processing and spintronics. The harmonious combination of magnetism and luminescence within single molecules provides insights for emerging next-generation spintronics devices.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2021)
Article
Chemistry, Multidisciplinary
Lu Zhang, Jin Xiong, Yin-Shan Meng, Tao Liu
Summary: Five mononuclear compounds were synthesized by combining cyclopentadiene, β-diketonate, tripyrazoylborate ligands, and dysprosium ion. Magnetic studies revealed that compounds 1Dy and 3Dy exhibited typical butterfly-type hysteresis, while compounds 1Dy-4Dy showed magnetic relaxation governed by the Orbach and Raman processes. Compound 3Dy showed a two-step magnetic relaxation attributed to the static disordering of the coordinated THF molecule. Magnetic anisotropy analysis indicated that the strength of interactions between Dy III and surrounding ligands determined the orientation of the magnetic easy axis.
CHINESE CHEMICAL LETTERS
(2023)
Article
Chemistry, Inorganic & Nuclear
Yubao Dong, Li Zhu, Bing Yin, Xinrui Zhu, Dongfeng Li
Summary: Six Dy(III) single-ion magnets with different magnetic properties were synthesized, with complex 6 showing the best performance and its magnetic hysteresis loop remaining open at a low temperature of 21 K. Crystal structures revealed a switching of local symmetry as a main factor for magnetic property distinctions, along with the impact of OMe-substituted groups. These results highlight the importance of considering positional isomerism when designing ligands for Dy-SIMs to avoid overlooking potential factors affecting magnetic performance.
DALTON TRANSACTIONS
(2021)
Article
Chemistry, Multidisciplinary
James P. Durrant, Benjamin M. Day, Jinkui Tang, Akseli Mansikkamaki, Richard A. Layfield
Summary: Replacing the ligands in dysprosium single-molecule magnets with a different type leads to larger energy barriers to magnetization reversal. The distances between the ligands in the new complexes suggest a different crystal field splitting. Theoretical analysis shows that the magnetic axes in the ground Kramers doublets are oriented towards the new ligands. Introducing new parameters allows for comparisons between different single-molecule magnets, indicating the potential for improved performance in the new system.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
Article
Chemistry, Multidisciplinary
Peng-Bo Jin, Ke-Xin Yu, Yuan-Qi Zhai, Qian-Cheng Luo, Yi-Dian Wang, Xu-Feng Zhang, Yi Lv, Yan-Zhen Zheng
Summary: Two dysprosium(III) complexes have been confirmed as single-molecule magnets, with the dimer showing enhanced magnetic relaxation barrier. Dilution experiments with the yttrium(III) analogue indicate the single-ion nature of the magnetic behavior.
CHINESE JOURNAL OF CHEMISTRY
(2021)
Article
Chemistry, Multidisciplinary
Qian-Cheng Luo, Ning Ge, Yuan-Qi Zhai, Tengbo Wang, Lin Sun, Qi Sun, Fanni Li, Zhendong Fu, Yan-Zhen Zheng
Summary: Two erbium(III) complexes, [ErCl(OArAd)3][Na(THF)6] (1) and Er(OArAd)3 (2), were prepared using a hard base ligand with large steric hindrance. The change in coordination geometry around the Er(III) site from distorted tetrahedral to flat trigonal pyramid geometry in different solvent environments enhanced the single-molecule magnet (SMM) behavior, with a field-induced effective energy barrier (Ueff) of 43(1) cm -1 for the latter. The study demonstrates the importance of a strong equatorial ligand field and high local symmetry in suppressing quantum tunneling of the magnetization (QTM) to achieve high-performance erbium(III)-based SMMs.
CHINESE CHEMICAL LETTERS
(2023)
Article
Chemistry, Multidisciplinary
Jules Moutet, Jules Schleinitz, Leo La Droitte, Maxime Tricoire, Fabrice Pointillart, Frederic Gendron, Thomas Simler, Carine Clavaguera, Boris Le Guennic, Olivier Cador, Gregory Nocton
Summary: Divalent lanthanide organometallics are highly reducing compounds known for single electron transfer reactivity and small molecule activation. This study presents a rare organometallic sandwich compound of divalent thulium with the cyclooctatetraenyl ligand, introducing it as an additional strategy for designing high-performing Single Molecule Magnets. The first divalent thulium sandwich complex with f(13) configuration behaves as a single-molecule magnet even in the absence of a DC field.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2021)
Article
Chemistry, Multidisciplinary
Jerome Long, Dmitry M. Lyubov, Alexander A. Kissel', Ilia A. Gogolev, Andrey A. Tyutyunov, Yulia Nelyubina, Fabrice Salles, Yannick Guari, Anton Cherkasov, Joulia Larionova, Alexander A. Trifonov
Summary: This study reports the synthesis, crystal structures, magnetic properties, and theoretical investigations of five erbium complexes. The coordination geometry of the complexes can be controlled by adjusting experimental conditions, with each complex exhibiting different magnetic behaviors and coordination structures.
Article
Chemistry, Multidisciplinary
Lewis R. Thomas-Hargreaves, David Hunger, Michal Kern, Ashley J. Wooles, Joris van Slageren, Nicholas F. Chilton, Stephen T. Liddle
Summary: In this study, the synthesis of a lanthanide-(bis)boryloxide complex with idealized D-4h@Dy(iii) point-group symmetry was reported. The complex exhibits single-molecule magnetism with one of the highest energy barriers among six-coordinate lanthanide-SMM systems. The validation of electrostatic model predictions by complex 2Dy informs future design of lanthanide-SMMs.
CHEMICAL COMMUNICATIONS
(2021)
Article
Chemistry, Multidisciplinary
Bo-Yi Chen, Min-Yem Tsai, Yu-Chia Su, Po-Heng Lin, Jerome Long
Summary: The synthesis and crystal structures of four dysprosium(iii) complexes based on the amino-bis(benzotriazole phenolate) ligand were reported. Different types of complexes were obtained under different conditions, showing specific magnetic properties driven by Raman relaxation. The influence of nitrophenolate substituents on the Dy-O(phenoxide) distance was found to be a key factor in the observed distinct dynamics.
Article
Chemistry, Multidisciplinary
Qian-Cheng Luo, Ke-Xin Yu, Peng-Bo Jin, Ye-Ye Liu, Yuan-Qi Zhai, Yan-Zhen Zheng
Summary: A dimeric dysprosium guanidinate complex with dihydride bridge was successfully isolated and compared to its dibromide-bridged analogue. The introduction of hydride bridge significantly reduces the distance between Dy(III) ions, but has a weaker effect on magnetism compared to the bromide bridge.
CHINESE JOURNAL OF CHEMISTRY
(2023)
Article
Chemistry, Inorganic & Nuclear
Jerome Long, Aleksei O. Tolpygin, Dmitry M. Lyubov, Natalia Yu. Rad'kova, Anton V. Cherkasov, Yulia V. Nelyubina, Yannick Guari, Joulia Larionova, Alexander A. Trifonov
Summary: Three luminescent dysprosium(iii) complexes based on fluorinated alkoxide ligands were synthesized and characterized, showing single-molecule magnet behavior and dysprosium-based luminescence; despite different structures, they exhibit bifunctional magneto-luminescent single-molecule magnet properties.
DALTON TRANSACTIONS
(2021)
Article
Chemistry, Inorganic & Nuclear
Jing Xi, Peipei Cen, Yan Guo, Yuzhu Li, Yuanyuan Qin, Yi-Quan Zhang, Weiming Song, Xiangyu Liu
Summary: The reversible single-crystal-to-single-crystal conversion of PBP Dy(III) complexes has been achieved, providing insights into the magnetic switches with fascinating transformation processes.
DALTON TRANSACTIONS
(2022)
Article
Chemistry, Multidisciplinary
Malay Dolai, Surajit Biswas, Eufemio Moreno-Pineda, Wolfgang Wernsdorfer, Mahammad Ali, Razan A. Alshgari, Saikh Md. Wabaidur, Ashutosh Ghosh
Summary: Two dinuclear complexes were synthesized and characterized, and their catalytic activity in the carbon dioxide insertion reaction into epoxides for the formation of organic cyclic carbonates was studied. The complexes showed efficient catalytic activity with high yields and turnover numbers.
CRYSTAL GROWTH & DESIGN
(2023)
Article
Chemistry, Physical
D. Rieger, S. Guenzler, M. Spiecker, P. Paluch, P. Winkel, L. Hahn, J. K. Hohmann, A. Bacher, W. Wernsdorfer, I. M. Pop
Summary: By using a self-structured aluminum nanojunction, a nonlinearity medium can be formed between superconducting electrodes, acting as a replacement for Josephson junctions. The new type of qubit, gralmonium, exhibits similar performance to the traditional fluxonium qubit, but the lack of a mesoscopic parallel plate capacitor leads to a significantly larger charging energy for the aluminum nanojunction, providing a powerful diagnostic tool for microscopic defects in superconducting materials.
Article
Chemistry, Inorganic & Nuclear
Alexandru-Constantin Stoica, Madalin Damoc, Sergiu Shova, Ghenadie Novitchi, Mihaela Dascalu, Maria Cazacu
Summary: A new metal-organic framework was synthesized by complexation of manganese ion with 1,3-bis(carboxypropyl)tetramethyldisiloxane and 1,2-di(4-pyridyl)ethylene. The compound exhibits hydrophobicity, thermal stability, and electrical insulation.
Article
Chemistry, Multidisciplinary
Xiang Zhong, Zhao-Bo Hu, Tong-Kai Luo, Yan Peng, Sui-Jun Liu, Christopher E. Anson, Annie K. Powell, He-Rui Wen
Summary: Three one-dimensional Ln(III) complexes based on hydrazone Schiff-base ligands were reported. The Dy-III analogue exhibited a field-induced SMM behavior with U (eff) = 43 K, while the Gd-III analogue showed a significant magnetic thermal effect with a maximum -ΔS(m) value of 21.32 J kg(-1) K-1 at 3 K and 7 T. The structures of the complexes were also characterized. The SMM behavior in the Dy-III compound was attributed to its single-ion properties, which was confirmed by comparing it with the Y/Dy diluted complex. On the other hand, the magnetocaloric effect in the Gd-III analogue was observed, with a maximum entropy change -ΔS(m) of 21.32 J kg(-1) K-1 at ΔH = 7 T and 3 K.
CRYSTAL GROWTH & DESIGN
(2023)
Article
Chemistry, Inorganic & Nuclear
Gheorghe Taran, Edgar Bonet, Eufemio Moreno-Pineda, Mario Ruben, Wolfgang Wernsdorfer
Summary: Through numerical simulation, we find that phonon-modulated hyperfine interaction opens a direct relaxation channel between the nuclear spins and the phonon bath. The mechanism is of potential importance for the theory of spin bath and the relaxation dynamics of the molecular spins.
INORGANIC CHEMISTRY
(2023)
Article
Chemistry, Physical
Willem Van den Heuvel, Peter Reinholdt, Jacob Kongsted
Summary: The PDE model is expanded to include exchange and nonadditive exchange-correlation effects, resulting in the PDE-X model. The PDE-X model accurately captures the range dependence of solvent interaction and improves the accuracy of excitation energies for organic chromophores. The improved embedding description leads to systematic solvent effects that do not average out when applying configurational sampling.
JOURNAL OF PHYSICAL CHEMISTRY B
(2023)
Review
Chemistry, Multidisciplinary
Veacheslav Vieru, Silvia Gomez-Coca, Eliseo Ruiz, Liviu F. Chibotaru
Summary: This review discusses the synthesis methods of single-molecule magnets (SMMs) and the basic factors affecting their performance, as well as the strategies for further enhancing SMM performance. Practical approaches for designing SMMs for memory devices are also presented.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Chemistry, Inorganic & Nuclear
Ting-Ting Ruan, Eufemio Moreno-Pineda, Michael Schulze, Soeren Schlittenhardt, Thomas Brietzke, Hans-Jurgen Holdt, Senthil Kumar Kuppusamy, Wolfgang Wernsdorfer, Mario Ruben
Summary: This article describes two dysprosium-based isotopologues and investigates their magnetic properties. The study found that shorter distances between Dy(III) are crucial for creating Qudits with enlarged Hilbert spaces.
INORGANIC CHEMISTRY
(2023)
Article
Physics, Applied
D. Rieger, S. Guenzler, M. Spiecker, A. Nambisan, W. Wernsdorfer, I. M. Pop
Summary: Resonator measurements are a powerful tool for characterizing a material's microwave response. The losses of a resonant mode can be quantified by its internal quality factor Qi, which can be affected by Fano interference. Limited knowledge of interfering paths in a setup leads to uncertainty in Qi, increasing with the coupling coefficient. This study demonstrates the relevance of Fano interference in microwave resonator measurements and provides insight into eliminating systematic errors.
PHYSICAL REVIEW APPLIED
(2023)
Article
Crystallography
Firas Khalil Al-Zeidaneen, Christopher E. Anson, Annie K. Powell
Summary: This article reports the crystal structure of a nickel complex, in which the ligand undergoes an unexpected and unsymmetrical reaction. The structure and coordination geometry of the ligand are described in detail, and the intermolecular interactions in the molecule are revealed.
ACTA CRYSTALLOGRAPHICA SECTION E-CRYSTALLOGRAPHIC COMMUNICATIONS
(2023)
Article
Materials Science, Multidisciplinary
Naoya Iwahara, Liviu F. Chibotaru
Summary: The synergistic interplay of different interactions in materials leads to the emergence of novel quantum phenomena. Spin-orbit and vibronic couplings usually counteract each other; however, in cubic d(1) double perovskites they coexist and give rise to spin-orbit-lattice entanglement with unquenched dynamic Jahn-Teller effect on the metal sites. The correlation of these entangled states induced by intersite interactions has not been assessed so far.
Article
Chemistry, Inorganic & Nuclear
Selvakumar Arumugam, Bjoern Schwarz, Prathap Ravichandran, Sunil Kumar, Liviu Ungur, Kartik Chandra Mondal
Summary: This work investigates the dynamic magnetic properties of a complex [(Cp-Ar3)(4)(Dy2Cl4K2)-Cl-III]& BULL;3.5(C7H8) synthesized using a tri-aryl-substituted cyclopentadienyl ligand (Cp-Ar3). The Dy(III)-metallocene weakly couples via K2Cl4 and exhibits slow relaxation of magnetization below 14.5 K under zero applied dc field through KD3 energy levels with an energy barrier of 136.9/133.7 cm(-1) at the Dy sites. The coordination of two chloride ions at each Dy centre leads to geometrical distortion and reduction of the single-ion axial anisotropy energy barrier.
DALTON TRANSACTIONS
(2023)
Article
Chemistry, Physical
Willem Van den Heuvel, Peter Reinholdt, Jacob Kongsted
Summary: The polarizable density embedding (PDE) model is extended to include exchange and nonadditive exchange-correlation in the embedding potential, resulting in the PDE-X model. This model accurately captures the range dependence of solvent interaction and significantly improves the accuracy of excitation energies for organic chromophores. The improved embedding description leads to systematic solvent effects that persist under configurational sampling.
JOURNAL OF PHYSICAL CHEMISTRY B
(2023)
Article
Chemistry, Physical
Ghulam Abbas, Francisco C. Franco Jr, S. Janani, J. N. Cheerlin Mishma, A. Manikandan, S. Muthu, Christopher E. Anson
Summary: A new dimeric complex was synthesized through a one-pot reaction in MeOH and characterized by infrared spectroscopy, elemental analysis, and single crystal X-ray diffraction. The theoretical study and molecular docking analysis revealed the structural properties and potential biological activity of the complex.
JOURNAL OF MOLECULAR STRUCTURE
(2024)
