Themed collection Articles behind our 2025 journal covers


Copper coordination chemistry of the patellamides – cyanobactins in the ascidian-Prochloron symbiosis
Prochloron didemni, an obligate symbiont of certain ascidians (sea squirts found in tropical areas), produces various cyclic peptides in large quantities, and their copper coordination chemistry is shown to be related to their biological funcion.
Dalton Trans., 2025,54, 3968-3976
https://doi.org/10.1039/D4DT03002H
Advancements in porous framework materials for chemiresistive hydrogen sensing: exploring MOFs and COFs
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.
Dalton Trans., 2025,54, 3526-3550
https://doi.org/10.1039/D4DT02551B

The matere bond
This article explores matere bonds, supported by theoretical and computational studies. These σ-hole interactions with group 7 elements (Mn, Tc, Re) are key in crystal engineering, catalysis, and biological systems.
Dalton Trans., 2025,54, 3095-3105
https://doi.org/10.1039/D4DT03302G
What happened to BBR3464 and where to from here for multinuclear platinum-based anticancer drugs?
The development of the trinuclear platinum(II) complex BBR3464 (also known as triplatin) in the late 1990s was meant to be a revolution in the field of platinum chemotherapy.
Dalton Trans., 2025,54, 2199-2208
https://doi.org/10.1039/D4DT02868F
Metal complex-based probes for the detection of chloride ions
Metal complex-based probes enable μM- to nM-level Cl− detection with high selectivity via coordination, H-bonding, electrostatic interactions and more, using techniques such as UV-visible absorption, luminescence, electrochemistry, and 1H NMR.
Dalton Trans., 2025,54, 1731-1749
https://doi.org/10.1039/D4DT02546F
Study of the molecular design and synthesis status of metal complexes as unimolecular luminescent materials for white light emission
This article focuses on unimolecular white-light-emitting metal complexes and classifies them according to the nature of their luminescent electronic states and the current status of their synthesis and application in WOLEDs.
Dalton Trans., 2025,54, 3106-3112
https://doi.org/10.1039/D4DT03047H
Syntheses and properties of energetic cyclo-pentazolate cocrystals
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.
Dalton Trans., 2025,54, 1307-1319
https://doi.org/10.1039/D4DT02727B
Spin coherence phenomena of an S = 1/2 copper(II) system in a polyoxometalate with a less-abundant nuclear spin
The spin coherence phenomena of a system consisting of a mononuclear 3d transition metal S = 1/2 centre embedded in a polyoxometalate with low nuclear-spin abundance, [(n-C4H9)4N]4H2[SiW11O39Cu0.01Zn0.99], have been revealed for the first time.
Dalton Trans., 2025,54, 3581-3585
https://doi.org/10.1039/D4DT02832E
Synthesis of a dilithiobutadiene bearing extremely bulky silyl substituents and its reactivity toward functionalized silanes
A 1,4-dilithio-1,3-butadiene bearing extremely bulky silyl substituents was synthesized and its reactions with functionalized silanes followed by the reduction afforded a bulky dilithiosilole.
Dalton Trans., 2025,54, 4030-4038
https://doi.org/10.1039/D4DT03537B

Platinum(II/IV) complexes with N-substituted carboxylate ethylenediamine/propylenediamine ligands: preparation, characterization and in vitro activity
The synthesis and characterization of novel platinum(II) and platinum(IV) complexes derived from unsymmetrical ethylene or propylenediamine derivatives are presented.
Dalton Trans., 2025,54, 3597-3609
https://doi.org/10.1039/D4DT03041A
Probing the nature of intramolecular (sp3)C–H⋯Cu(I) interactions in organo thione copper(I) cages
Tetranuclear copper(I) N-heterocyclic thione cages with proximity-enforced Cu⋯H interactions have been demonstrated. The Cu⋯H interactions in these cages represent three-centre–four-electron anagostic (sp3)C–H⋯Cu(I) bonds.
Dalton Trans., 2025,54, 3118-3126
https://doi.org/10.1039/D4DT03294B

Impact of –OH surface defects on the electronic and structural properties of nickel oxide thin films
A fascinating surface! By modelling NiO(100) slabs at varying –OH defect densities different structures are found, including three- and tetra-coordinated Ni species. Their electronic structure ranges from p-type or n-type to metallic character.
Dalton Trans., 2025,54, 2765-2775
https://doi.org/10.1039/D4DT03340J
Synthesis, structure, oxygen evolution reaction (OER) and visible-light assisted organic reaction studies on A2M2TeB2O10 (A = Ba and Pb; M = Mg, Zn, Co, Ni, Cu, and Fe)
Telluroborates, A2M2TeB2O10 (A = Ba, Pb; M = Mg, Zn, Co, Ni and Fe), were investigated towards electrocatalytic water oxidation and visible light-assisted organic reactions.
Dalton Trans., 2025,54, 2753-2764
https://doi.org/10.1039/D4DT02706J
Evaluation of dipole moment of polyhedral oligomeric silsesquioxane compounds
This is the first time that the dipole moment of polyhedral oligomeric silsesquioxane (POSS) has been evaluated using actual electrochemical measurements.
Dalton Trans., 2025,54, 2747-2752
https://doi.org/10.1039/D4DT03230F
Shape-responsive host–guest chemistry: metal-free tetracationic porphyrin nonplanarity promoted by clay mineral interactions assessed by theoretical simulations
Distortions in the porphyrin core from planarity can trigger a unique structure–property relationship, imparting its basicity, chemical stability, redox potential, and excited-state energetics, among other properties.
Dalton Trans., 2025,54, 2271-2282
https://doi.org/10.1039/D4DT03437F
Emission enhancement in a luminescent polychlorinated diphenylpyridylmethyl radical through coordination to silver(I)
Coordination of a luminescent radical to AgI enhanced and red-shifted the radical-centered emission. This study demonstrates similar effects in the luminescence of the radical by complexation with group 11 d10-metal ions.
Dalton Trans., 2025,54, 2265-2270
https://doi.org/10.1039/D4DT03129F

Diverse reactivity of a cationic N-heterocyclic phosphenium complex towards anionic substrates – substitution vs. reduction
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.
Dalton Trans., 2025,54, 1806-1814
https://doi.org/10.1039/D4DT03352C

Feasibility of controlled nitric oxide generation via ascorbate induced chemical reduction of nitrite ions
Controlled generation of nitric oxide (NO) by continuous infusion of nitrite ions into an ascorbate-reduced copper catalyst mediator.
Dalton Trans., 2025,54, 1797-1805
https://doi.org/10.1039/D4DT01980F
Fluorescent zinc(II) thione and selone complexes for light-emitting applications
The blue light-emitting fluorescent zinc(II) chalcogenone complexes were synthesized and characterized to demonstrate their potential for light-emitting applications.
Dalton Trans., 2025,54, 1384-1392
https://doi.org/10.1039/D4DT02924K
A ratiometric luminescence thermometer based on lanthanide encapsulated complexes
This paper describes the synthesis of various luminescent Tb and Eu complexes by encapsulation in a Ca-complex. The synthesised material was then used as a ratiometric luminescence thermometer, in which thermometric parameters could be tuned.
Dalton Trans., 2025,54, 1377-1383
https://doi.org/10.1039/D4DT02639J

Necrosis inducing tetranuclear Ru(II)–Re(I) metal complex for anticancer therapy
This study reports on the chemical synthesis and biological evaluation of a tetranuclear Ru(II)–Re(I) complex as a chemotherapeutic agent.
Dalton Trans., 2025,54, 942-950
https://doi.org/10.1039/D4DT02992E

Interfacing CuO, CuBi2O4, and protective metal oxide layers to boost solar-driven photoelectrochemical hydrogen evolution
This article reports the development of CuO|CuBi2O4 photocathodes stabilized by protective layers of TiO2, MgO, or NiO, with Pt or MoS2 nanoparticles serving as co-catalysts to facilitate H2 evolution.
Dalton Trans., 2025,54, 920-933
https://doi.org/10.1039/D4DT02738H
Synthesis and anion binding properties of (thio)urea functionalized Ni(II)-salen complexes
Symmetric (thio)urea and an unsymmetric urea functionalized salen complexes of Ni(II) were synthesized and studied for anion binding using 1H and 19F NMR spectroscopy and DOSY NMR experiments.
Dalton Trans., 2025,54, 934-941
https://doi.org/10.1039/D4DT02683G
C–H bond chlorination and bromination using water soluble nickel(II) guanidine complexes
Water-soluble nickel(II)-guanidine-based complexes successfully catalyzed the C–H chlorination of a series of hydrocarbons in the presence of NaOCl and acetic acid in water–chloroform (7 : 3, biphasic condition) at room temperature.
Dalton Trans., 2025,54, 503-510
https://doi.org/10.1039/D4DT02783C
Evolution of aluminum aminophenolate complexes in the ring-opening polymerization of ε-caprolactone: electronic and amino-chelating effects
A series of aluminum complexes bearing phenolate (O–Al and O2–Al), biphenolate (OO–Al type), aminophenolate (ON–Al), aminobiphenolate (ONO–Al), bis(phenolato)bis(amine) (NNOO–Al), and Salan (ONNO–Al) type ligands were synthesized.
Dalton Trans., 2025,54, 511-532
https://doi.org/10.1039/D4DT02923B
Atomic layer deposition of Sn-doped germanium diselenide for an As-free Ovonic threshold switch with low off-current
Ternary diagram of Sn-doped GeSe2, which was obtained by atomic layer deposition, showing a vertical device schematic and its DC and AC electrical characteristics.
Dalton Trans., 2025,54, 492-502
https://doi.org/10.1039/D4DT02946A

Synthesis, XRD and DFT studies on Pb[ChCN]2 (Ch = O, S, Se) and Pb[SeCN][OH]
We report on the synthesis of Pb[ChCN]2 (Ch = O, S, Se) and Pb[SeCN][OH] and their hitherto unknown crystal structures.
Dalton Trans., 2025,54, 74-88
https://doi.org/10.1039/D4DT02830A
About this collection
This collection brings together all of the research and review-type articles behind our 2025 journal covers, showcasing the wide range of research found in the journal. If your article has been accepted for publication, and you are interested in highlighting your research on one of our covers, please do contact the Editorial Team for further information.