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Themed collection Frontiers in coordination chemistry and its applications

30 items
Editorial

Frontiers in coordination chemistry and its applications

We are delighted to present this collection of articles to celebrate the work of Kim Dunbar on the occasion of her 60th birthday.

Graphical abstract: Frontiers in coordination chemistry and its applications
Communication

Octacyanometallate qubit candidates

Cyanometallates are excellent building blocks for networks, we demonstrate counterintuitively long spin–lattice relaxation times in two heavy octacyanometalltes.

Graphical abstract: Octacyanometallate qubit candidates
Open Access Communication

Coordination-induced reversible electrical conductivity variation in the MOF-74 analogue Fe2(DSBDC)

DMF coordination to Fe centers induces partial electron transfer and improves electrical conductivity in Fe2(DSBDC) by three orders of magnitude.

Graphical abstract: Coordination-induced reversible electrical conductivity variation in the MOF-74 analogue Fe2(DSBDC)
Paper

Slow magnetic relaxation and luminescence properties in lanthanide(III)/anil complexes

The Dy(III) member of a family of lanthanide(III)-anil complexes displays luminescence and exhibits slow magnetic relaxation.

Graphical abstract: Slow magnetic relaxation and luminescence properties in lanthanide(iii)/anil complexes
Paper

Oxygen activation at a dicobalt centre of a dipyridylethane naphthyridine complex

The mechanism of oxygen activation at a dicobalt bis-μ-hydroxo core is probed by the implementation of synthetic methods to isolate reaction intermediates.

Graphical abstract: Oxygen activation at a dicobalt centre of a dipyridylethane naphthyridine complex
Paper

A novel bis-1,2,4-benzothiadiazine pincer ligand: synthesis, characterization and first row transition metal complexes

The synthesis and coordination chemistry of ligand LH2 to first row transition metals is described in which it acts as a tridentate N,N′,N′′-donor.

Graphical abstract: A novel bis-1,2,4-benzothiadiazine pincer ligand: synthesis, characterization and first row transition metal complexes
Paper

Layered ferrimagnets constructed from charge-transferred paddlewheel [Ru2] units and TCNQ derivatives: the importance of interlayer translational distance in determining magnetic ground state

In D2A-type layered magnets composed of paddlewheel-type diruthenium(II,II) complexes and TCNQ derivatives, is it a ferrimagnet or an antiferromagnet?

Graphical abstract: Layered ferrimagnets constructed from charge-transferred paddlewheel [Ru2] units and TCNQ derivatives: the importance of interlayer translational distance in determining magnetic ground state
Paper

Correlating cobalt redox couples to photovoltage in the dye-sensitized solar cell

Two sets of structurally analogous Co(III/II)-based redox mediators were incorporated in the dye-sensitized solar cells and a linear correlation was demonstrated between redox potential and photovoltage.

Graphical abstract: Correlating cobalt redox couples to photovoltage in the dye-sensitized solar cell
Paper

Syntheses, structures, and magnetic properties of three new MnII–[MoIII(CN)7]4− molecular magnets

Three cyanide-bridged 3D long-range magnetic ordering complexes were successfully synthesized and magnetically characterized. These compounds are the first [MoIII(CN)7]4−-based materials containing the bidentate secondary ligands.

Graphical abstract: Syntheses, structures, and magnetic properties of three new MnII–[MoIII(CN)7]4− molecular magnets
Paper

Bridging cyanides from cyanoiron metalloligands to redox-active dinitrosyl iron units

Cyanide, as an ambidentate ligand, plays a pivotal role in providing a simple diatomic building-block motif, for controlled metal aggregation, M–CN–M′.

Graphical abstract: Bridging cyanides from cyanoiron metalloligands to redox-active dinitrosyl iron units
Paper

Influence of the catalyst structure in the cycloaddition of isocyanates to oxiranes promoted by tetraarylstibonium cations

In the context of our work on electron deficient group 15 cations as Lewis acid catalysts, we have synthesized the triflate salts of a series of tetraarylstibonium cations and evaluated their catalytic activity for the cycloaddition of isocyanates to oxiranes.

Graphical abstract: Influence of the catalyst structure in the cycloaddition of isocyanates to oxiranes promoted by tetraarylstibonium cations
Paper

A fluorescent layered oxalato-based canted antiferromagnet

The first fluorescent oxalato-based canted antiferromagnet maintains the quantum nature of the emitters thanks to the isolation provided by the honeycomb matrix.

Graphical abstract: A fluorescent layered oxalato-based canted antiferromagnet
Paper

A nitrogen-rich ligand as a scaffold for slow magnetic relaxation in dysprosium-based 0D and 1D architectures

A nitrogen-rich ligand is employed as a scaffold for lanthanide ions, leading to clear SMM-like behaviour and two well-isolated modes of magnetic relaxation.

Graphical abstract: A nitrogen-rich ligand as a scaffold for slow magnetic relaxation in dysprosium-based 0D and 1D architectures
Paper

New Ru(II) complex for dual photochemotherapy: release of cathepsin K inhibitor and 1O2 production

A new Ru(II) complex releases a cysteine protease inhibitor and produces cytotoxic 1O2 upon irradiation with visible light, making it potentially useful as a dual-action PDT agent.

Graphical abstract: New Ru(ii) complex for dual photochemotherapy: release of cathepsin K inhibitor and 1O2 production
Paper

Ferrocene-based anilides: synthesis, structural characterization and inhibition of butyrylcholinesterase

Twenty-three compounds in two series of ferrocene-based anilides, with the general formula C5H5-Fe-C5H4-C6H4-NH-CO-C6H4-R (where R = H, F, Cl, CH3 and OCH3), have been synthesized and found to inhibit butyrylcholinesterase.

Graphical abstract: Ferrocene-based anilides: synthesis, structural characterization and inhibition of butyrylcholinesterase
Paper

Tuning the spin crossover behavior of the polyanion [(H2O)6Fe3(μ-L)6]6–: the case of the cesium salt

Cation exchange transforms the gradual spin transition of the trimer [(H2O)6Fe3(μ-L)6]6– into an abrupt transition with a wide hysteresis above room temperature.

Graphical abstract: Tuning the spin crossover behavior of the polyanion [(H2O)6Fe3(μ-L)6]6–: the case of the cesium salt
Paper

Magnetic layered perovskites of [CH3C(NH2)2]2[M(HCOO)4] (M = Co2+ and Ni2+): synthesis, structures and properties

Two layered perovskites of the formula [CH3C(NH2)2]2[M(HCOO)4] (M = Co and Ni) exhibit anisotropic thermal expansion behavior and weak ferromagnetism.

Graphical abstract: Magnetic layered perovskites of [CH3C(NH2)2]2[M(HCOO)4] (M = Co2+ and Ni2+): synthesis, structures and properties
Paper

Heptamolybdate: a highly active sulfide oxygenation catalyst

[Mo2O11]2− identified as the active species in H2O2 oxygenation of sulfides catalyzed by heptamolybdate using in situ nano-ESI MS analysis.

Graphical abstract: Heptamolybdate: a highly active sulfide oxygenation catalyst
Paper

Anionic guest-dependent slow magnetic relaxation in Co(II) tripodal iminopyridine complexes

We explore structural and magnetic changes on mononuclear cobalt(II) complex salts featuring a tripodal iminopyridine ligand imparted by second coordination sphere anions.

Graphical abstract: Anionic guest-dependent slow magnetic relaxation in Co(ii) tripodal iminopyridine complexes
Paper

Magnetic properties of transition metal dimers probed by inelastic neutron scattering

We characterise the spin dynamics of two molecular transition metal dimers, by combining inelastic neutron scattering and magnetic measurements.

Graphical abstract: Magnetic properties of transition metal dimers probed by inelastic neutron scattering
Open Access Paper

Order in disorder: solution and solid-state studies of [MIII2MII5] wheels (MIII = Cr, Al; MII = Ni, Zn)

Heterometallic species with Anderson-like structures are characterised by single-crystal X-ray diffraction, solution- and solid-state NMR spectroscopy, ESI mass spectrometry and SQUID magnetometry.

Graphical abstract: Order in disorder: solution and solid-state studies of [MIII2MII5] wheels (MIII = Cr, Al; MII = Ni, Zn)
Paper

Cross-linking of cyanide magnetic coordination polymers by rational insertion of formate, cyanide or azide

Anionic bridging ligands formate, cyanide and azide have been used to form cross-links in a ferrimagnetic coordination framework, resulting in competing magnetic interactions that decrease the magnetic ordering temperature and result in peculiar magnetic properties.

Graphical abstract: Cross-linking of cyanide magnetic coordination polymers by rational insertion of formate, cyanide or azide
Paper

Rationalizing the sign and magnitude of the magnetic coupling and anisotropy in dinuclear manganese(III) complexes

Combined experimental and theoretical studies on a family of twelve MnIII dimers reveal that exchange contribution to the magnetic anisotropy is as important as single ion anisotropy.

Graphical abstract: Rationalizing the sign and magnitude of the magnetic coupling and anisotropy in dinuclear manganese(iii) complexes
Paper

Heterometallic Cu/Ln cluster chemistry: ferromagnetically-coupled {Cu4Ln2} complexes exhibiting single-molecule magnetism and magnetocaloric properties

A new family of ferromagnetically-coupled {Cu4Ln2} complexes is reported. The compounds exhibit SMM and magnetocaloric properties.

Graphical abstract: Heterometallic Cu/Ln cluster chemistry: ferromagnetically-coupled {Cu4Ln2} complexes exhibiting single-molecule magnetism and magnetocaloric properties
Paper

Substituents drive ligand rearrangements, giving dinuclear rather than mononuclear complexes, and tune CoII/III redox potential

Sterically encumbered 6-halo-substituents lead to BF4/MeOH/ligand rearrangement, forming doubly bridged {Co1–[O(Me)–B(F2)–O(R)]2–Co1A} dinuclear complexes (6-Cl, 6-Br) of the modified ligands.

Graphical abstract: Substituents drive ligand rearrangements, giving dinuclear rather than mononuclear complexes, and tune CoII/III redox potential
Paper

Multimodal Prussian blue analogs as contrast agents for X-ray computed tomography

Heavy alkaline cation uptake converts Prussian blue analogs (PBAs) into competitive contrast agents for X-ray computed tomography.

Graphical abstract: Multimodal Prussian blue analogs as contrast agents for X-ray computed tomography
Paper

Electrically switchable magnetic exchange in the vibronic model of linear mixed valence triferrocenium complex

A vibronic model for the electric field control of antiferromagnetic exchange is developed for the linear mixed-valence triferrocenium complex Fe(III)–Fe(II)–Fe(III), which is proposed as possible molecular candidate for the implementation of a quantum logic gate.

Graphical abstract: Electrically switchable magnetic exchange in the vibronic model of linear mixed valence triferrocenium complex
Paper

A linear trinuclear ferrous single molecule magnet

A linear trinuclear ferrous [FeII3] SMM exhibited clear magnetic hysteresis loops and a significant higher effective energy barrier in comparison with its cobalt(II) analogue.

Graphical abstract: A linear trinuclear ferrous single molecule magnet
Paper

A bromo-capped diruthenium(I,I) N-heterocyclic carbene compound for in situ bromine generation with NBS: catalytic olefin aziridination reactions

A bromo-capped diruthenium(I,I) complex activates NBS to produce bromine in situ, and thus catalyses bromine-mediated olefin aziridination reactions.

Graphical abstract: A bromo-capped diruthenium(i,i) N-heterocyclic carbene compound for in situ bromine generation with NBS: catalytic olefin aziridination reactions
Paper

Direct synthesis of functionalized PCN-333 via linker design for Fe3+ detection in aqueous media

Functionalized PCN-333 was synthesized for Fe3+ ion detection via one-pot solvothermal reaction.

Graphical abstract: Direct synthesis of functionalized PCN-333 via linker design for Fe3+ detection in aqueous media
30 items

About this collection

This special issue of Dalton Transactions is to mark the 60th birthday of mentor, friend and colleague, Professor Kim R. Dunbar.

The issue highlights emerging trends in coordination chemistry, reflecting the many diverse areas of where Kim’s work has impacted the field of inorganic chemistry. Examples include, but are not limited to, molecular magnetism, structure, spectroscopy, photochemistry, supramolecular chemistry, metals in medicine, and anion-pi interactions. 

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