Magnetic moments: The orientation of the title single-molecule magnet was investigated by magnetic single crystal and luminescence characterization, supported ab initio calculations, found to be governed position hydrogen atoms apical water molecules. This finding suggests that simple magneto-structural correlations can give misleading clues for research in molecular magnetism as well design MRI contrast agents. Detailed facts importance specialist readers are published ”Supporting...

Due to their usual large magnetic moments and anisotropy lanthanide ions are investigated for the search of Single Molecule Magnets with high blocking temperature. However, low symmetry crystal environment, complexity electronic states or non-collinearity easy-axes in polynuclear systems make rationalization behaviour based molecular difficult. In this perspective article we expose a methodology which use additional characterization techniques, like single measurements luminescence...

Single crystal magnetic studies combined with a theoretical analysis show that cancellation of the moments in trinuclear Dy3+ cluster [Dy{3}(mu{3}-OH)2L3Cl(H2O){5}]Cl{3}, resulting nonmagnetic ground doublet, originates from noncollinearity single-ion easy axes magnetization ions lie plane triangle at 120 degrees one each other. This gives rise to peculiar chiral nature doublet and slow relaxation abrupt accelerations crossings discrete energy levels.

Spotting trends: Upon going from TbIII to YbIII centers in the complexes of DOTA4− ligand, a reorientation easy axis magnetization perpendicular parallel LnO bond apical water molecule is experimentally observed and theoretically predicted (see picture; SMM=single-molecule magnet). Only ions with an odd number electrons show slow relaxation magnetization. As service our authors readers, this journal provides supporting information supplied by authors. Such materials are peer reviewed may be...

A mixed theoretical and experimental approach was used to determine the local magnetic anisotropy of dysprosium(III) ion in a low-symmetry environment. The susceptibility tensor monomeric species having formula [Dy(hfac)(3)(NIT-C(6)H(4)-OEt)(2)], which contains nitronyl nitroxide (NIT-R) radicals, determined at various temperatures through angle-resolved magnetometry. These results are agreement with ab initio calculations performed using complete active space self-consistent field (CASSCF)...

The reaction of manganese(III) acetate meso-tetraphenylporphyrin with phenylphosphinic acid provides the one-dimensional compound formula [Mn(TPP)O2PHPh]·H2O, which crystallizes in monoclinic C2/c space group. chain structure is generated by a glide plane resulting Jahn−Teller elongation axes MnIII octahedra that alternate along chain. phenylphosphinate anion transmits sizable antiferromagnetic exchange interaction that, combined easy axis magnetic anisotropy sites, gives rise to canted...

A simple trinuclear dysprosium complex shows slow relaxation of the magnetisation.

The cyanoacetate complexes, {[Ln₂(CNCH₂COO)₆(H₂O)₄]·2H₂O}_n, with Ln = Gd, Nd, show field-induced slow relaxation: resonant phonon trapping and Orbach process for direct processes Nd.

Magnetische Momente: Die Orientierung des im Titel genannten Einzelmolekülmagneten wurde durch Einkristall- und Lumineszenzcharakterisierung in Verbindung mit Ab-initio-Rechnungen untersucht hängt von der Position H-Atome apikalen Wassermoleküle ab. Dieser Befund bedeutet, dass einfache magneto-strukturelle Korrelationen zu irreführenden Schlussfolgerungen für Forschungen über molekularen Magnetismus die Entwicklung MRI-Kontrastmitteln führen können. Detailed facts of importance to...

We investigate theoretically and experimentally the static magnetic properties of single crystals molecular-based single-chain magnet formula ${[\text{Dy}{(\text{hfac})}_{3}\text{NIT}({\text{C}}_{6}{\text{H}}_{4}\text{OPh})]}_{\ensuremath{\infty}}$ comprising alternating ${\text{Dy}}^{3+}$ organic radicals. The molar susceptibility ${\ensuremath{\chi}}_{M}$ displays a strong angular variation for sample rotations around two directions perpendicular to chain axis. A peculiar inversion between...

Zwei mal drei: Die Kupplung zweier Dy3-Dreiecke zu einem Dy6-Komplex (siehe Bild; Dy blau, Cl grün, O rot) erhöht die Barriere für Magnetisierungsumkehr erheblich. Dieser Effekt wurde auf der Grundlage von Einkristallmagnetometrie-Messungen und Ab-initio-Rechnungen erklärt.

Trendforschung: Beim Wechsel von TbIII- zu YbIII-Zentren der Komplexe des DOTA4−-Liganden wird experimentell beobachtet und theoretisch vorausgesagt, dass sich die Reorientierung Magnetisierung apikalen Wassermoleküls ändert, zwar senkrecht parallel zur Ln-O-Bindung (siehe Bild). Nur Ionen mit einer ungeraden Elektronenzahl zeigen eine langsame Relaxation Magnetisierung. SMM=Einzelmolekülmagnet.

The synthesis and magnetostructural properties of a new low-dimensional magnetic system based on α-furoate ligands, {[Dy(α-C4H3OCOO)(μ-(α-C4H3OCOO))2(H2O)3]}n, abbreviated {Dy(α-fur)3}n, are reported. X-ray diffraction experiments results evidence the presence two different Dy coordination environment types differing only in position one furoate ligands. crystallographic structure is formed by polymeric chains along c-axis, each composed just type, coupled within bc-plane with same type....

Two DyIII ions can be water bridged to form a textbook example of ferromagnetic short-bridged Dy-dimers where strong Ising anisotropy evidenced by single-crystal rotating magnetometry. The dimers present both single ion and molecule magnet behaviour. Magnetic dilution evidences the influence coupling on magnetic relaxation especially quantum tunnelling.

Abstract The two mononuclear complexes [Ln(tta) 3 (L)] · C 6 H 14 {Ln = Dy III and Yb } (tta – 2‐thenoyltrifluoroacetonate, L 2‐{1‐methylpyridyl‐4,5‐[4,5‐bis(propylthio)tetrathiafulvalenyl]‐1 ‐benzimidazol‐2‐yl}pyridine) are isostructural. lanthanide ions adopt a distorted‐square‐antiprism coordination polyhedron ( D 4d symmetry). compound behaves like single‐molecule magnet (SMM), whereas no out‐of‐phase component of the magnetic susceptibility is measured for . crystal‐field splitting 2 F...

The synthesis and detailed characterization of a few samples the compound RbxMn[Fe(CN)6]y·zH2O are described. composition materials significantly depends on applied preparative conditions. Analysis spectroscopic results (FTIR, Raman, 57Fe Mössbauer, XPS) X-ray powder-diffraction data yielded further assessment difference in structural features terms amount Fe(CN)6 vacancies associated number water molecules. characteristic individual magnetic behavior, as well metal-to-metal charge-transfer...

A {Tb(α-fur)₃}_n one-dimensional complex shows Single-Chain-Magnet (SCM) behavior at <italic>H</italic> = 0 in two different types of antiferromagnetic transverse chains (A and B), triggered by the existence defects breaking into segments with short-range order.

New synthesized polymeric mixed complexes {Tb_xEu_1−x} exhibit both tunable luminescence and SMM behavior.

We use neutron diffraction to probe the magnetization components of a crystal Mn12 single-molecule magnets. Each these molecules behaves, at low temperatures, as nanomagnet with spin S = 10 and strong anisotropy along crystallographic c axis. The application magnetic field H(perpendicular) perpendicular induces quantum tunneling between opposite orientations, enabling spins attain thermal equilibrium. For T approximately < 0.9(1) K, this equilibrium state shows spontaneous magnetization,...

Single-crystal angular-resolved magnetometry and wavefunction-based calculations have been used to reconsider the magnetic properties of a recently reported Dy III -based single-molecule magnet, namely [Dy(hfac) 3 (L 1 )] with hfac − = 1,1,1,5,5,5-hexafluoroacetylacetonate L 2-(4,5-bis(propylthio)-1,3-dithiol-2-ylidene)-6-(pyridin-2-yl)-5H-[1,3]dithiolo[4',5':4,5]benzo[1,2-d]imidazole. The susceptibility magnetization at low temperature are found be strongly influenced by supramolecular...

Compounds [Fe3 Ln(tea)2 (dpm)6 ] (Fe3 Ln; Ln= Tb-Yb, H3 tea=triethanolamine, Hdpm=dipivaloylmethane) were synthesized as lanthanide(III)-centered variants of tetrairon(III) single-molecule magnets (Fe4 ) and isolated in crystalline form. with Ln=Tb-Tm are isomorphous show crystallographic threefold symmetry. The coordination environment the rare earth, given by two tea(3-) ligands, can be described a bicapped distorted trigonal prism D3 Magnetic measurements showed presence weak...

Abstract The characterization of the crystal structure, phase transitions, magnetic structure and dielectric properties has been carried out on [CH 3 NH ][Co(COOH) ] ( 1 ) perovskite‐like metal–organic compound through variable‐temperature single‐crystal powder neutron X‐ray diffraction relative permittivity measurements. paraelectric to antiferroelectric‐like transition observed at around 90 K is triggered by a structural transition; studies show change from Pnma space group RT 1A P 2 / n...