Themed collection Spotlight Collection: Lanthanide and transition metal complexes as molecular magnets

26 items
Perspective

Designed polynuclear lanthanide complexes for quantum information processing

The design of dissymmetric organic ligands has been exploited to produce heterometallic dinuclear and trinuclear lanthanide-based coordination compounds with the requirements to act as logical quantum gates for spin-based quantum computing.

Graphical abstract: Designed polynuclear lanthanide complexes for quantum information processing
From the themed collection: 2021 Frontier and Perspective articles
Perspective

Conducting single-molecule magnet materials

Multifunctional molecular materials exhibiting electrical conductivity and single-molecule magnet (SMM) behaviour are particularly attractive for electronic devices and related applications owing to the interaction between electronic conduction and magnetization of unimolecular units.

Graphical abstract: Conducting single-molecule magnet materials
Communication

Assessment of minimal active space CASSCF-SO methods for calculation of atomic Slater–Condon and spin–orbit coupling parameters in d- and f-block ions

CASSCF-SO calculations in OpenMolcas are used to determine Slater-Condon and SOC parameters for 3dn, 4dn, 5dn and 4fn ions. We quantify the error of minimal active space approaches and compare to other similar methods.

Graphical abstract: Assessment of minimal active space CASSCF-SO methods for calculation of atomic Slater–Condon and spin–orbit coupling parameters in d- and f-block ions
Communication

Slow magnetic relaxation influenced by change of symmetry from ideal Ci to D3d in cobalt(II)-based single-ion magnets

Two mononuclear complexes including the same cation [Co(imidazole)6]2+ and the different symmetries Ci and D3d showed discriminatively slow magnetic relaxation.

Graphical abstract: Slow magnetic relaxation influenced by change of symmetry from ideal Ci to D3d in cobalt(ii)-based single-ion magnets
Accepted Manuscript - Paper

Tunable magnetic anisotropy in luminescent cyanido-bridged {Dy2Pt3} molecules incorporating heteroligand PtIV linkers

Paper

Are lanthanide-transition metal direct bonds a route to achieving new generation {3d–4f} SMMs?

3d–4f metal–metal bonds are utilised to enhance exchange coupling to the order of several hundred wavenumbers.

Graphical abstract: Are lanthanide-transition metal direct bonds a route to achieving new generation {3d–4f} SMMs?
Accepted Manuscript - Paper

Field-induced Single Ion Magnet behaviour in discrete and one-dimensional complexes containing the bis(1-methylimidazol-2-yl)ketone]-containing cobalt(II) building units

Paper

3d–4f magnetic exchange interactions and anisotropy in a series of heterobimetallic vanadium(IV)–lanthanide(III) Schiff base complexes

3d–4f complexes were prepared and their X-ray analyses revealed changes in the coordination number upon changing the lanthanide (Gd → Er). The VIV–LnIII magnetic exchange was fit from magnetic data and calculated by DFT and CASSCF theoretical models.

Graphical abstract: 3d–4f magnetic exchange interactions and anisotropy in a series of heterobimetallic vanadium(iv)–lanthanide(iii) Schiff base complexes
Paper

Single-molecule magnets within polyoxometalate-based frameworks

Two polyoxometalate-based frameworks containing holmium and terbium are synthesized. Their single-molecule magnet (SMM) properties are investigated, where weak field-induced SMM behaviour is observed at low temperatures in dynamic magnetic studies.

Graphical abstract: Single-molecule magnets within polyoxometalate-based frameworks
Paper

A rare isostructural series of 3d–4f cyanido-bridged heterometallic squares obtained by assembling [FeIII{HB(pz)3}(CN)3] and LnIII ions: synthesis, X-ray structure and cryomagnetic study

A rare isostructural series of cyanido-bridged {FeIIILnIII}2 square-shaped heterobimetallic complexes were obtained, in which TbIII, DyIII and ErIII derivatives show slow magnetization relaxation under zero and non-zero static fields.

Graphical abstract: A rare isostructural series of 3d–4f cyanido-bridged heterometallic squares obtained by assembling [FeIII{HB(pz)3}(CN)3]− and LnIII ions: synthesis, X-ray structure and cryomagnetic study
Paper

Auxiliary alkyl chain modulated spin crossover behaviour of [Fe(H2Bpz2)2(Cn-bipy)] complexes

The length of the alkyl chain substituents employed in complexes [Fe(H2Bpz2)2(Cn-bipy)] can have a large impact on the transition temperature and solid state spin crossover profile.

Graphical abstract: Auxiliary alkyl chain modulated spin crossover behaviour of [Fe(H2Bpz2)2(Cn-bipy)] complexes
Paper

Enhancing the barrier height for magnetization reversal in 4d/4f RuIII2LnIII2 “butterfly” single molecule magnets (Ln = Gd, Dy) via targeted structural alterations

Single molecule magnetic features of new {RuIII2DyIII2} “butterfly” clusters are compared, by experiment and theory, to those of 3d/4f analogues.

Graphical abstract: Enhancing the barrier height for magnetization reversal in 4d/4f RuIII2LnIII2 “butterfly” single molecule magnets (Ln = Gd, Dy) via targeted structural alterations
From the themed collection: Celebrating our Golden Authors
Paper

Two types of Ln2Cu2 hydroxo-trimethylacetate complexes with 0D and 1D motifs: synthetic features, structural differences, and slow magnetic relaxation

The insertion of Na+ ions into the structure of LnIII2CuII2 hydroxo-trimethylacetate complexes leads to a change in the butterfly-like metal core geometry giving rise to a significant change in their slow magnetic relaxation.

Graphical abstract: Two types of Ln2Cu2 hydroxo-trimethylacetate complexes with 0D and 1D motifs: synthetic features, structural differences, and slow magnetic relaxation
Paper

Study of the influence of nuclear spin and dilution over the slow relaxation in a 3d4f heterobimetallic single-molecule magnet

Isotopic enrichment and magnetic dilution influenced the magnetic performance of a 3d4f heterobimetallic single-molecule magnet in both zero and applied magnetic field.

Graphical abstract: Study of the influence of nuclear spin and dilution over the slow relaxation in a 3d4f heterobimetallic single-molecule magnet
Paper

Magnetic anisotropy on demand exploiting high-pressure as remote control: an ab initio proof of concept

An in silico proof of concept showed that detectable changes in magnetic anisotropies can be achieved by applying pressure on molecular magnetic systems containing lanthanides.

Graphical abstract: Magnetic anisotropy on demand exploiting high-pressure as remote control: an ab initio proof of concept
Paper

Structural, magnetic and theoretical analyses of anionic and cationic phthalocyaninato-terbium(III) double-decker complexes: magnetic relaxation via higher ligand-field sublevels enhanced by oxidation

Ligand oxidation of single-molecule magnets enhances magnetic relaxations via higher energy levels.

Graphical abstract: Structural, magnetic and theoretical analyses of anionic and cationic phthalocyaninato-terbium(iii) double-decker complexes: magnetic relaxation via higher ligand-field sublevels enhanced by oxidation
Paper

Tetrairon(II) extended metal atom chains as single-molecule magnets

The iron(II)-based extended metal atom chains [Fe4(tpda)3X2] (X = Cl, Br) have a weakly magnetic ground state but display SMM properties, which are detectable even in zero DC field when X = Br.

Graphical abstract: Tetrairon(ii) extended metal atom chains as single-molecule magnets
Paper

A new class of DyIII-SIMs associated with a guanidine-based ligand

The diverse relaxation dynamics of a series of DyIII-based SIMs resulting from the coordinated molecules and counter anions were elucidated by structural analysis, magnetic investigations and ab initio calculations.

Graphical abstract: A new class of DyIII-SIMs associated with a guanidine-based ligand
Paper

A trapped hexaaqua CoII complex between the polyanionic sheets of decavanadate reveals high axial anisotropy and field induced SIM behaviour

A hexaaqua CoII complex within the anionic metal oxide cluster of decavanadates reveals easy-axis anisotropy and field induced SIM behaviour with a high energy barrier for the spin reversal process.

Graphical abstract: A trapped hexaaqua CoII complex between the polyanionic sheets of decavanadate reveals high axial anisotropy and field induced SIM behaviour
Paper

Slow magnetic relaxation in penta-coordinate cobalt(II) field-induced single-ion magnets (SIMs) with easy-axis magnetic anisotropy

Two penta-coordinate [Co(Ln)(NCS)]ClO4 with substituted pyridyl based bispyrazolyl ligands have been structurally characterized. The complexes show an easy-axis magnetic anisotropy, large rhombicity and slow relaxation of magnetization.

Graphical abstract: Slow magnetic relaxation in penta-coordinate cobalt(ii) field-induced single-ion magnets (SIMs) with easy-axis magnetic anisotropy
Paper

Radii-dependent self-assembly of chiral lanthanide complexes: synthesis, chirality, and single-molecule magnet behavior

Here we report the radii-dependent self-assembly of chiral lanthanide complexes and the single-molecule magnet behavior of the Dy5 complexes.

Graphical abstract: Radii-dependent self-assembly of chiral lanthanide complexes: synthesis, chirality, and single-molecule magnet behavior
Paper

Structure and magnetic properties of a novel heteroheptanuclear metal string complex [Ni3Ru2Ni27-teptra)4(NCS)2](PF6)

A novel heteroheptanuclear metal string complex was synthesized by using nickel and ruthenium metal ions to explore the electronic structure and magnetic property.

Graphical abstract: Structure and magnetic properties of a novel heteroheptanuclear metal string complex [Ni3Ru2Ni2(μ7-teptra)4(NCS)2](PF6)
Paper

The slow magnetic relaxation regulated by the coordination, configuration and intermolecular dipolar field in two mononuclear DyIII single-molecule magnets (SMMs)

Tuning the magnetic dynamics of single-molecule magnets (SMMs) is a crucial challenge for chemists.

Graphical abstract: The slow magnetic relaxation regulated by the coordination, configuration and intermolecular dipolar field in two mononuclear DyIII single-molecule magnets (SMMs)
Paper

A difunctional azido-cobalt(II) coordination polymer exhibiting slow magnetic relaxation behaviour and high-energy characteristics with good thermostability and insensitivity

As a difunctional material, an azido-Co(II) coordination polymer with a high-nitrogen content exhibits both molecule-based magnetic behaviour and high-energy performance with superior thermostability and insensitivity.

Graphical abstract: A difunctional azido-cobalt(ii) coordination polymer exhibiting slow magnetic relaxation behaviour and high-energy characteristics with good thermostability and insensitivity
Paper

3D LnIII-MOFs: slow magnetic relaxation and highly sensitive luminescence detection of Fe3+ and ketones

Five Ln-MOFs were obtained: the Dy-MOF shows slow magnetic relaxation, and the Eu-MOF and Tb-MOF show selective and sensitive sensing towards Fe3+ ions and ketones in a water system.

Graphical abstract: 3D LnIII-MOFs: slow magnetic relaxation and highly sensitive luminescence detection of Fe3+ and ketones
Paper

Magnetic properties and structure of tetranuclear lanthanide complexes based on 8-hydroxylquinoline Schiff base derivative and β-diketone coligand

Herein, we report the synthesis, structure, and magnetism of five tetranuclear LnIII complexes encapsulated by 5-(4-pyridinecarboxaldehyde)amino-8-hydroxylquinoline and β-diketonate coligand.

Graphical abstract: Magnetic properties and structure of tetranuclear lanthanide complexes based on 8-hydroxylquinoline Schiff base derivative and β-diketone coligand
26 items

About this collection

Welcome to a Spotlight themed collection published by Dalton Transactions.

 The research area of molecule-based magnets encompassing single-molecule magnets (SMMs), single-ion magnets (SIMs) and single-chain magnets (SCMs) has been extremely active in recent years. This field is truly interdisciplinary and the advances in this field have been possible only due to a concerted effort from synthetic coordination- and organometallic chemists, physicists, materials scientists, and theoreticians. Research in this field is driven by both academic curiosity as well as the possibility of finding exotic applications such as high-density information to quantum computation. While many challenges remain to be overcome before the potential of these new materials can be realized, there has been substantial progress both in the design and assembly of these new systems as well as in understanding of their properties. This appears to be an appropriate time to bring out a special edition of Dalton Transactions on this multi-disciplinary subject.

This collection is guest edited by Dalton Transactions Associate Editor Vadapalli Chandrasekhar (Indian Institute of Technology Kanpur).

Articles will be added to this themed collection as soon as possible after they are published. Please return to this page frequently to see the collection grow.

If you would like to contribute an article to this collection, please contact the Editorial Office at dalton-rsc@rsc.org with your proposed topic.

Spotlight

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