Themed collection Dalton Transactions HOT Articles

The use of bismuth and its compounds in biomedicine has developed rapidly in recent years.

This review is based on the cyclic 48-tungsto-8-phosphate [H₇P₈W₄₈O₁₈₄]³³⁻ (P₈W₄₈) as well as its smaller derivatives [H₆P₄W₂₄O₉₄]¹⁸⁻ (P₄W₂₄), and [H₂P₂W₁₂O₄₈]¹²⁻ (P₂W₁₂), with a focus on structural aspects, solution stability and reactivity.

The rigidity and well-defined size and shape of the bispidine scaffold, as well as the ease of preparing 4- to 10-dentate ligands are the main features for its very rich coordination chemistry.

Herein, we present a general overview of the molecular design and electronic properties of linear cyanido-bridged multimetallic complexes and their challenges.

Conversion of plastic waste into feedstocks by transition metal catalysts: Strategies for converting polymeric waste into feedstocks through catalytic depolymerization by transition metal complexes and organometallic compounds are highlighted.

Semiconductor metal oxides detect H₂ even at the ppm level but need high temperatures and oxygen. MOFs/COFs detect H₂ at higher concentrations, work at lower temperatures, and perform very well even under inert conditions.

The latest developments in controlling the photoinduced processes of Re(I) tricarbonyl complexes bearing D–A and D–π–A ligands with six different diimine cores decorated by various electron-rich amine, sulphur-based and π-conjugated aryl groups.

A concise review is presented on MOF–clay composites, which have recently emerged as a new class of functional composites with enhanced properties and applications.

This review covers the synthesis, characterization, and reactivity of bicyclic(alkyl)(amino)carbenes (BICAACs) and outlines the diverse applications of BICAACs in organometallic chemistry, metal-free catalysis, and main-group chemistry.

There has been growing interest in recent years in the synthesis of multifunctional materials that exhibit both chirality and electrical conductivity.

A journey on Earth abundant transition metal complexes as emiters for Light-emitting Electrochemical Cells.

This perspective provides an overview of 1,3-dialkyltriazenides as potential CVD/ALD precursors. Initial studies with this new class of compounds demonstrates their significant potential as metal precursors for future ALD/CVD applications.

Cocrystallization can change the molecular composition and crystal structure of cyclo-N₅⁻ species to increase its decomposition temperature, density, and energy, and reduce its sensitivity.

This review outlines the progress made in recent years in Ni–Al LDH-based heterojunctions for photocatalysis.

A ruthenium(II) complex with a photoswitchable arylazopyrazole ligand is reported.

We present the synthesis and characterization of the parent monomeric triplet titanocene, enabled by stabilization with the N-heterocyclic carbene IMe₄.

An Fe(II) complex bearing tris(carbene)borate ligands with imidazol-2-ylidene donors shows marked destabilization of metal centered states by the strongly σ-donating ligands. Yet, its high-energy ³MLCT state is rapidly deactivated via a ³MC state.

We report the synthesis of an ambient-stable, ferrocene-embedded, anthraquinodimethane-based phosphaquinoid. The compound exhibits a pronounced butterfly-like distortion of the anthrylene core adopting a highly contorted geometry in the solid-state.

CYP116B46, a self-sufficient enzyme with a reductase, hydroxylates the proton pump inhibitor ilaprazole with a strong binding affinity (K_d = 0.12 ± 0.02 μM).

The reactions of the bulky ferrocenyl lithium dimer (Fc*Li)₂ (Fc* = 2,5-bis(3,5-di-tBu-C₆H₃)-1-ferrocenyl) with aluminum trihalides (AlCl₃, AlBr₃, and AlI₃) to furnish the corresponding monomeric bis(ferrocenyl)haloalumanes are reported.

Oxidation boosts the potential of bis(catecholato)silanes, transforming them into Lewis superacidic radical cations with remarkable catalytic activity in dimerization, hydrodeoxygenation, and carbonyl-olefin metathesis.

The role of aqueous ammonia in the preparation of [Au(NHC)Cl] complexes is examined. This weak base is capable of promoting C–H and S–H activations leading to Au-alkynyls and Au-thiolates under mild conditions using technical grade solvents in air.

NIR sensitive energetic metal complexes can be designed by decreasing CFSE of center metals, with increased oscillator of d–d excitation. The thermal stability should be evaluated by both ignition and deflagration to detonation transition steps.

The heteropolynuclear chiral tetrahedral cages (Yb/Eu)₄L₄(R/S-BINAPO)₄ exhibit upconverted circularly polarized luminescence (UC-CPL) via a novel Yb** → T₁ → Eu* upconversion luminescence mechanism.

Using {Ln₂Zn₂} complexes, it was shown that obtaining mixed-carboxylate compounds is a way to direct enhancement of lanthanide complexes’ luminescence.

A 2D/2D CoPor-DBE/CN S-scheme heterojunction exhibited excellent photocatalytic activity and stability for CO₂ reduction coupled with tetracycline oxidation.

We have introduced a molecular coordination chemistry method to synthesize a Cu- and P-co-doped nitrogen-doped carbon oxygen reduction reaction (ORR) electrocatalyst with a peak power density of 164.5 mW cm⁻² in a zinc–air battery.

Large and single crystals of a family of lamellar sodium methanesulfonates have been grown by ionic substitution of interlayer anions. Structural substitution affects crystal symmetry, growth habit, properties, and crystal quality.

The pyridinophane ligands ^RN3CX (X = H, Br) are well-established scaffolds that facilitate and stabilize nickel oxidative addition complexes to the proximal C(aryl)–X bond.

Synergistically regulating the electronic structure of FeCoNi MEA through tungsten doping, constructing heterostructure catalyst with atomic-level synergistic effects and multiple active sites, which enhances OER kinetics and stability.

The characterization of La₂(CN₂)₃ and the luminescence of La₂(CN₂)₃:Ce³⁺ are reported. This finding completes the series of rare-earth carbodiimdes with three distinct crystal structures and coordination numbers of cations.

In this work a novel CO₂ reduction catalyst is discussed that contains an iron-porphyrin complex with a K⁺ ion bound in the second coordination sphere, which assists with efficient proton delivery.

La₂ZnGa₂S₆O exhibits the largest SHG response among melilite-type transition-metal oxysulfides. The incorporation of transition and lanthanide metals into the structure offers a feasible strategy for designing new large SHG oxysulfides.

AdcA, the metal transporter in Streptococcus mutans, the primary cause of dental caries, is specific for Zn(II).

Rare earth metal alkyl complexes can promote the reactions of 2-imino-benzonitriles and substituted phthalonitriles with amines to produce the corresponding 2,3-dihydroquinazolinimines and 1,3-diiminoisoindolines in moderate to excellent yields.

We report the anticancer activity of a red light-activable hetero-bimetallic [Fe(III)–Ru(II)] complex as a next-generation dual-modality PDT tool for photo-activated anticancer therapy.

Natural single crystalline Fe_0.8Mn_0.2WO₄ orders antiferromagnetically and reveals low thermal conductivity above the ordering temperature.

Heterogenous PS@Pd(OAc)₂ catalyst for three-component one-Pot Mizoroki–Heck coupling via an in situ witting reaction.

Three-dimensional hollow ZnS/MXene heterostructures with stable Ti–O–Zn were fabricated, which can provide conducting networks to offer faster Li⁺ pathways, fix the location of ZnS, prevent agglomeration, and avoid volume expansion of ZnS.

Reversible intercalation of lithium into the layered oxytelluride V₂Te₂O using both chemical and electrochemical methods is demonstrated.

Mitochondria-localized dinuclear iridium(III) complexes were developed for use in two-photon photodynamic therapy against melanoma.

Two multi-stimuli responsive tetra(1H-benzo[d]imidazol-2-yl)ethene Zn(II) complexes with CC were constructed via one-pot facile synthesis through C–C coupling without removing oxygen.

A solvothermal reaction of In(NO₃)₃ and R-, S-pempH₂ in isopropanol/water solvent results in compounds R-, S-[In₂(pempH)₂(μ₂-OH)₂(H₂O)₂](NO₃)₂ with a spiral microflower structure, which show enantioselective adsorption behaviour.

We have studied possible reactions of the Cu_B site in pMMO with QM/MM methods, comparing it to the active site in LPMO. It seems to be poised more to the formation of H₂O₂ than the oxidation of CH₄.

This article designs a dynamic thermal emitter based on phase change material VO₂. This structure avoids emission loss at low temperatures and increases heat dissipation at high temperatures.

The Cu^II complex of 1,8-bis(2-hydroxybenzyl)-cyclam forms an unexpected variety of isomers differing in the mutual orientation of the substituents on the cyclam nitrogen atoms, protonation of the phenolate pendant, and the ligand denticity.

Integrated experimental and computational studies of hydrogen evolution reaction mechanisms with cobalt and nickel thiosemicarbazone complexes using distinct proton sources.

The self-degradation phenomenon of Fe–N–C-based direct methanol fuel cells is attributed to the chemical adsorption of methanol on the catalyst.

We have investigated a Lewis basic site rich MOF featuring a hydrogen-bonding acetylene nano-trap, which shows a high separation performance for C₂H₂/CO₂ mixtures.

Optimizing the interfacial electronic structure accelerates the desorption of activated adsorbed H intermediates, leading to more efficient hydrogen evolution.

The aza-Wittig reaction was successfully applied to the synthesis of a variety of functionalized carboranyl-imines. This methodology can be modified to permit the synthesis in one step of carboranyl-benzothiazole and benzoselenazoline derivatives.

Initial encounter complex formation with nucleophiles enhances ring strain in azaphosphiridines thus promoting P–C bond cleavage.

We synthesized two novel host-guest crown ether molecules [(PTFMA)(15-crown-5)ClO₄] (1) and [(PTFMA)(15-crown-5)PF₆] (2). Compound 1 transitioned from a non-centrosymmetric space group to a centrosymmetric one.

This study explores the proton-coupled electron transfer (PCET) pathways of two high-spin Co complexes, highlighting how internal spin-state interactions and the external pK_a values of proton sources influence catalytic mechanisms.

Hybrid coordination polymers based on AgCl or AgBr and different n-picolylamine ligands show interesting and tunable electronic and photophysical properties.

Telluroborates, A₂M₂TeB₂O₁₀ (A = Ba, Pb; M = Mg, Zn, Co, Ni and Fe), were investigated towards electrocatalytic water oxidation and visible light-assisted organic reactions.

This is the first time that the dipole moment of polyhedral oligomeric silsesquioxane (POSS) has been evaluated using actual electrochemical measurements.

DFT study of rac-Me₂Si(η⁵-C₉H₆)₂ZrMe₂ activation by methylaluminoxane (MAO) show that two MAO species form an ion-pair with a weakly coordinating counter-anion, explaining the high insertion activity of zirconocene catalysts at high Al : Zr ratios.

A new family of water-soluble photosensitizers featuring ethyl phosphonate groups on the tetrapyrrolic macrocycle was studied. Two sterically bulky phosphonate substituents significantly reduce the solution aggregation of tetraanionic porphyrins.

The metal clusters in the Ce/Zr-UiO-66 generated open metal sites after post-treatment with methanol and water vapor, achieving complete catalytic degradation of hexachlorobenzene.

Upon irradiation and carbon monoxide pressure, ruthenium carbonyl reacts with silver(I) and deelectronating reagents to form [Ag{Ru(CO)₅}₂]⁺ and [Ru₂(CO)₁₀]²⁺, respectively.

In this study, the phosphaguanidinate trinuclear homometallic yttrium carbene complex and binuclear heterobimetallic Y/Al carbyne and carbide complexes were isolated via stoichiometric reactions of the yttrium bis(aminobenzyl) complex with AlMe₃.

A series of donor-free 9-aluminafluorenes (R-AlFlus) that have either dimeric (R = Me or Br) or monomeric (R = Mes*) structures were synthesized. Mes*-AlFlu is the first example of a monomeric and three-coordinate AlFlu.

Ionic conductivity of Li₃PS₄ if synthesized by a solvent-assisted method strongly depends on overall and surface morphology. Amorphous Li₃PS₄ shows a rather high conductivity which is only slightly enhanced when going to the (nano-)crystalline form.

The cadmium-rich RERh₂Cd₂₀ phases form with the whole series of rare earth elements. EuRh₂Cd₂₀ and YbRh₂Cd₂₀ exhibit stable divalent ground states.

A cationic NHP complex of iron exhibits a broader reactivity spectrum towards anions than its neutral analogues. Key reaction pathways include nucleophilic attack at P, reductive decarbonylation, or CH-bond metalation, respectively.

Recent advancements in materials design have driven the scientific community to explore phosphor materials for multifunctional applications.

Two new isoelectronic compounds, Sr₃Zr₂Cu₄S₉ and Sr₃Zr₂Cu₄Se₉ have been synthesized. Photovoltaic and transport properties of these phases have been studied in detail.

Ultrasmall Zn_1–xMn_XFe₂O₄ ferrites were obtained by the thermal decomposition process. We report the effect of the Mn²⁺ substitution on particles magnetic behavior studied by the EMR technique.

Fe₃N/Fe₃O₄@C were synthesized by consecutive carbonization and nitridation treatment, which delivered a high specific capacity of 1984 mA h g⁻¹ at 0.1 A g⁻¹ and 282 mA h g⁻¹ after 2000 cycles at 5 A g⁻¹.