Anions Influence the Relaxation Dynamics of Mono-μ3-OH-Capped Triangular Dysprosium Aggregates.

  title={Anions Influence the Relaxation Dynamics of Mono-$\mu$3-OH-Capped Triangular Dysprosium Aggregates.},
  author={Li Zhang and Peng Zhang and Lang Zhao and Jianfeng Wu and Mei Guo and Jinkui Tang},
  journal={Inorganic chemistry},
  volume={54 11},
A family of four Dy3 triangular circular helicates, namely, [Dy3(HL)3(μ3-OH)(CH3OH)2(H2O)4]Cl1.5(OH)0.5·0.5H2O (1), [Dy3(HL)3(μ3-OH)(CH3OH)3(H2O)2Cl]Cl·CH3OH (2), [Dy3(HL)3(μ3-OH)(CH3OH)3(H2O)2(NO3)](NO3) (3), and [Dy3(HL)3(μ3-OH)(CH3OH)4(ClO4)](ClO4) (4), were assembled by the reaction of a new acylhydrazone ligand H3L [(3-hydroxy)-N'-((8-hydroxyquinolin-2-yl)methylene)picolinohydrazide] with different dysprosium(III) salts. These compounds represent the first examples of μ-Oacylhydrazone… 
Dysprosium(III) compounds assembled via a versatile ligand incorporating salicylic hydrazide and 8-hydroxyquinolin units: syntheses, structures and magnetic properties.
Ab initio calculations and electrostatic potential analysis on complexes 2, 3, and three other complexes incorporating different kinds of ligands reveal the important interrelationship of magnetic anisotropy, magnetic coupling interactions and SMM properties.
Modulating single-molecule magnet behavior towards multiple magnetic relaxation processes through structural variation in Dy4 clusters
Three Dy4 clusters, [Dy4(tmhd)8(L)2(CH3OH)2]·CH3OH (1), [Dy4(hfac)8(L)2(DMF)2]·C7H16 (2) and [Dy4(dbm)6(L)2(μ3-OH)2]·CH2Cl2 (3) (tmhd = 2,2,6,6-tetramethyl-3,5-heptanedione, hfac =
Modulation of the properties of dinuclear lanthanide complexes through utilizing different β-diketonate co-ligands: near-infrared luminescence and magnetization dynamics.
A family of new dinuclear lanthanide complexes as the simplest entities showing intramolecular magnetic interactions, [Ln2(dbm)2(L)2(CH3OH)2] (Ln = Tb (1), Dy (2), Ho (3), Er (4), Yb (5), Lu (6)),
Influence of Magnetic Interactions and Single-Ion Anisotropy on Magnetic Relaxation within a Family of Tetranuclear Dysprosium Complexes.
Ab initio calculations substantiate that the excellent SMM property of complex 1b should mainly profit from strong ferromagnetic interactions between the individual DyIII ions, while different single-ion magnetism results in better SMMProperty of complex 3a than that of 3b.
Mononuclear and trinuclear DyIII SMMs with Schiff-base ligands modified by nitro-groups: first triangular complex with a N-N pathway.
Using two Schiff-base ligands containing an electron-withdrawing group (NO2) to obtain two mononuclear and two trinuclear complexes with the general formula, four complexes were confirmed by infrared spectroscopy and single-crystal X-ray diffraction.
Near-infrared luminescence and magnetic properties of dinuclear rare earth complexes modulated by β-diketone co-ligands
Seven phenoxo–O and carbonyl–O bridged dinuclear rare earth complexes have been assembled utilizing 3-methoxysalicylaldehyde-2-aminobenzoylhydrazone (H2L) and three β-diketone ligands (Hdbm =
A series of dinuclear Dy(iii) complexes bridged by 2-methyl-8-hydroxylquinoline: replacement on the periphery coordinated β-diketonate terminal leads to different single-molecule magnetic properties.
X-ray crystallographic analyses of the structures reveal that HMq serves as the effective bridge to link two Dy(III) centers by means of the phenoxyl oxygen and nitrogen atoms and the periphery β-diketonate ligands complete the coordination sphere by bidentate oxygen atoms.
A series of Ln2 complexes based on an 8-hydroxyquinoline derivative: slow magnetization relaxation and photo-luminescence properties
The reactions of 2-[(4-bromo-phenylimino)-methyl]-quinolin-8-ol (HL) and Ln(hfac)3·2H2O (Ln(III) = Pr, Gd, Tb, Dy, Ho, Er, Lu; hfac− = 1,1,1,5,5,5-hexafluoroacetylacetonate) precursors lead to the


Modulating magnetic dynamics of three Dy2 complexes through keto-enol tautomerism of the o-vanillin picolinoylhydrazone ligand.
The structural differences induced by the different coordinate fashions of the ligand may influence the strength of the local crystal field, the magnetic interactions between metal centers, and the local tensor of anisotropy on each Dy site and their relative orientations, therefore generating dissimilar dynamic magnetic behavior.
Phenoxido and alkoxido-bridged dinuclear dysprosium complexes showing single-molecule magnet behaviour.
Two new dysprosium(iii) complexes are synthesized from the Schiff-base ligands, showing frequency-dependent ac magnetic susceptibilities, indicating a slow relaxation of the magnetization, typical of SMM behaviour.
Two Locally Chiral Dysprosium Compounds with Salen‐Type Ligands That Show Slow Magnetic Relaxation Behavior
Two Dy compounds, [Dy-4(mu(4)-O)L-2(C6H5COO)(6)]center dot 3CH(3)OH (1) and [Dy2L(H2L)(teaH(2))(o-vanillin)(H2O)](ClO4)(2)center dot 2CH(3)OH center dot H2O (2, teaH(3) = triethanolamine), were
Two bulky-decorated triangular dysprosium aggregates conserving vortex-spin structure.
Of particular interest is that those two title Dy(3) compounds maintain the peculiar vortex-spin structure of the ground nonmagnetic doublet, which displays frequency-dependent slow magnetic relaxation, while 3 still inherits the single-molecule-magnet behavior as the parent Dy( 3) prototype.
Significant enhancement of energy barriers in dinuclear dysprosium single-molecule magnets through electron-withdrawing effects.
Systematic increase of the barrier was observed for all complexes with the most drastic increase seen in 6 when the acac ligand of 5 was fluorinated resulting in a 7-fold enhancement of the anisotropic barrier.
A N2(3-) radical-bridged terbium complex exhibiting magnetic hysteresis at 14 K.
The results show how synergizing the strong magnetic anisotropy of terbium(III) with the effective exchange-coupling ability of the N(2)(3-) radical can create the hardest molecular magnet discovered to date.
Modulating magnetic dynamics of Dy2 system through the coordination geometry and magnetic interaction.
The comparison of the structural parameters among the similar Dy2 SMMs with hula hoop-like geometry reveals the significant role played by coordination geometry and magnetic interaction in modulating the relaxation dynamics of SMMs.
Local coordination geometry perturbed β-diketone dysprosium single-ion magnets.
A series of three β-diketone mononuclear dysprosium complexes, namely, Dy(TFI)3(H2O)2 (1), Dy(TFI)3(bpy) (2), and [Dy(TFI)3(Phen)]·0.02CHCl3 (3) (TFI = 2-(2,2,2-trifluoroethyl)-1-indone, bpy =
Capping ligand perturbed slow magnetic relaxation in dysprosium single-ion magnets.
The similar values of U(eff) for the two magnetically diluted samples imply nearly the same distribution of low-lying states for their Dy(III) centers, which is consistent with the slight axial contraction observed for 1 and 2 and further corroborated by ligand-field analysis.
Inter-ligand reactions: in situ formation of new polydentate ligands
Two ligands have been synthesized by derivatisation of cyanuric chloride: 6-(diethylamino)-2,4-disulfanyl-1,3,5-triazine (H2SSta) 1 and 6-(diethylamino)-2-hydroxo-4-sulfanyl-1,3,5-triazine (H2OSta) 2