An organometallic single-ion magnet is synthesized with only 19 non-hydrogen atoms featuring an erbium ion sandwiched by two different aromatic ligands. This molecule displays a butterfly-shaped hysteresis loop at 1.8 K up to even 5 K. Alternating-current (ac) susceptibility measurement reveals the existence of thermally activated magnetic relaxation processes energy barriers as high 197 and 323 K, respectively.

No dates for Dy3+: With a single-ion magnet containing dysprosium, magnetic-site dilution leads to hysteresis loop that can be detected at 0.5 and 2 K. On cooling below 8 K, the relaxation mechanism of undiluted complex changes from thermally activated process quantum tunneling. The tunneling suppressed by applying direct-current field magnetic site dilution. Detailed facts importance specialist readers are published as "Supporting Information". Such documents peer-reviewed, but not...

Single-molecule magnets (SMMs) can retain their magnetization status preferentially after removal of the magnetic field below a certain temperature. The unique property, bistable status, enables molecule-scale SMM to become next-generation high-density information storage medium. SMMs' new applications are also involved in high-speed quantum computation and molecular spintronics. development coordination chemistry, especially transition metal (3d) lanthanide (4f) complexes, diversifies SMMs...

The pursuit of single-molecule magnets (SMMs) with better performance urges new molecular design that can endow SMMs larger magnetic anisotropy. Here we report two-coordinate cobalt imido complexes featuring highly covalent Co═N cores exhibit slow relaxation magnetization under zero direct-current field a high effective barrier up to 413 cm–1, record for transition metal based SMMs. Two theoretical models were carried out investigate the anisotropy these complexes: single-ion model and Co–N...

An air-stable star-shaped CoIICoIII3 complex with only one paramagnetic Co(II) ion in the D3 coordination environment has been synthesized from a chiral Schiff base ligand. Magnetic studies revealed that this exhibits slow magnetic relaxation absence of an applied dc field, which is main characteristics single-molecule magnets (SMMs). The barrier as high 109 K, quite large among transition-metal ion-based SMMs. represents first example zero-field SMM behavior mononuclear six...

TiO2 mesoporous crystal has been prepared by one-step corroding process via an oriented attachment (OA) mechanism with SrTiO3 as precursor. High resolution transmission electron microscopy (HRTEM) and nitrogen adsorption–desorption isotherms confirm its structure. Well-dispersed ruthenium (Ru) in the nanocrystal can be attained same using Ru-doped precursor SrTi1–xRuxO3. Ru is doped into lattice of TiO2, which identified HRTEM super energy dispersive spectrometer (super-EDS) elemental...

The synthesis, structures, and magnetic properties of a series lanthanide organometallic mixed sandwich molecules, (Cp*)Ln(COT), are investigated, where Cp* is the pentamethylcyclopentadiene anion COT cyclooctatetraene dianion Ln represents TbIII, DyIII, HoIII, ErIII, TmIII. Among five complexes, Dy Ho complexes determined to be single-ion magnets in addition previously reported Er complex. Both show obvious quantum tunneling magnetization relaxation absence static field. diluted complex...

A series of mononuclear lanthanide Zn-Dy-Zn type single-molecule magnets (SMMs) were synthesized and magnetically characterized. The four molecules ([Zn2(L1)2DyCl3]·2H2O (1), [Zn2(L1)2Dy(MeOH)Br3]·3H2O (2), [Zn2(L1)2Dy(H2O)Br2]·[ZnBr4]0.5 (3) [Zn2(L2)2DyCl3]·2H2O (4)) all display remarkable magnetic relaxation behavior with a relatively high energy barrier hysteresis temperature, despite possessing low local geometry symmetry the center Dy(iii) ions. Ab initio studies revealed that charge...

Single-ion magnets 1 and 2 their diamagnetic analogues 3 4 for magnetic-site dilution were obtained through substitution of the coordinated water molecules [Ln(TTA)(3)(H(2)O)(2)] (Ln=Dy (1, 2), Y (3, 4); TTA=4,4,4-trifluoro-1-(2-thienyl)-1,3-butanedionate) by 2,2'-bipyridine 3) 1,10-phenanthroline (2, 4) capping ligands. Their structures magnetic properties investigated with goal identifying features relevant to modulating relaxation dynamics single-ion magnets. The metal ions in all...

X-ray imaging has received sustained attention for healthcare diagnostics and nondestructive inspection. To develop photonic materials with tunable photophysical properties in principle accelerates radiation detection technologies. Here the rational design synthesis of doped halide perovskite CsCdCl3 :Mn2+ , R4+ (R = Ti, Zr, Hf, Sn) are reported as next generation storage phosphors, capability is greatly improved by trap management via Mn2+ site occupation manipulation heterovalent...

An anisotropic high-spin qubit with long coherence time could scale the quantum system up. It has been proposed that Grover's algorithm can be implemented in such systems. Dimetallic aza[80]fullerenes M2@C79N (M = Y or Gd) possess an unpaired electron located between two metal ions, offering opportunity to manipulate spin(s) protected cage for information processing. Herein, we report crystallographic determination of Gd2@C79N first time. This molecular magnet a collective ground state (S...

We have investigated the crystal field splitting in archetypal lanthanide-based single-ion magnets and related complexes (NBu4)+[LnPc2]−·2dmf (Ln = Dy, Ho, Er; dmf N,N-dimethylformamide) by means of far infrared inelastic neutron scattering spectroscopies. In each case, we found several features corresponding to direct transitions within ground multiplet. The observation three independent peaks holmium derivative enabled us derive parameters. addition, carried out CASSCF calculations. show...

A series of compounds [ADyL4]·[solvent] composed a dysprosium(iii) ion coordinated by four chelated naphthyridine-like ligands (L = 4-hydroxy-8-methyl-1,5-naphthyridine-3-carbonitrile) and an alkali metal (A Na, K, Rb, Cs) were synthesized characterized. They behave as single-molecule magnets under zero dc field with effective energy barrier around 95 cm-1. Meanwhile, the main part, [ADyL4], these SMMs is thermostable sublimable. The geometric structures three sublimed are identical to...

Organic semiconductors with high-spin ground states are fascinating because they could enable fundamental understanding on the spin-related phenomenon in light element and provide opportunities for organic magnetic quantum materials. Although have been observed some quinoidal type small molecules or doped semiconductors, semiconducting polymers at their neutral state rarely reported. Here we report three high-mobility different spin states. We show that polymer building blocks...

Verdünnungseffekte: Bei einem Dysprosium-haltigen Einzelionenmagnet führt eine Verdünnung des Komplexes zu einer Hystereseschleife, die bei 0.5 und 2 K detektiert werden kann. Der Relaxationsmechanismus unverdünnten zeigt Kühlen unter 8 einen Übergang von thermisch aktivierten Quantentunnelprozess. Das Quantentunneln lässt sich durch Anlegen eines Gleichstromfeldes Einzelionenmagneten unterdrücken.

An electrostatic model with displaced point charges to predict the quantized axis of rare-earth ions is proposed.

Herein we report a general electrochemical strategy for the Sandmeyer reaction.

Abstract High‐spin conjugated radicals have great potential in magnetic materials and organic spintronics. However, to obtain high‐spin is still quite challenging due their poor stability. We report the successful synthesis isolation of a stable triplet diradical, 10,12‐diaryldiindeno[1,2‐ b :2′,1′‐ e ]pyrazine ( m ‐DIP ). With ‐xylylene analogue skeleton containing electron‐deficient sp 2 ‐nitrogen atoms, displays significant aromatic character within its pyrazine ring spin density mainly...

Stable carbon-based polyradicals exhibiting strong spin-spin coupling and slow depolarization processes are particularly attractive functional materials. A new molecular motif synthesized by a convenient method that allows the integration of stable, high-spin radicals to (hetero)aromatic polycycles has been developed, as illustrated non-Kekulé diradical showing triplet ground state with long persistency (τ1/2 ≈31 h) in air. Compared widely used 1,3-phenylene, newly designed...

The uniform SrS:Ce 3+ and CaS:Ce nanocrystals provide new possibilities for large-area fast X-ray scintillation imaging screens.

Abstract Angular‐resolved single‐crystal magnetometry is a key tool to characterise lanthanide‐based materials with low symmetry, for which conjectures based on idealised geometries can be totally misleading. Unfortunately the technique strictly successful only triclinic structures, thus reducing significantly its application. By collecting out‐of‐equilibrium magnetisation data was extended orthorhombic organometallic Cp*ErCOT single‐molecule magnet (SMM), allowing first time reconstruction...