Joseph Nazak, Michael A. Land, Jason Douglas Masuda, Saurabh Chitnis
{"title":"Phosphaza-norbornanes","authors":"Joseph Nazak, Michael A. Land, Jason Douglas Masuda, Saurabh Chitnis","doi":"10.1039/d5dt02134k","DOIUrl":"https://doi.org/10.1039/d5dt02134k","url":null,"abstract":"The first definitive isolation of phosphaza-norbornanes is reported. These PN frameworks feature a bicyclo[2.2.1]heptane skeleton with bridgehead P(III) sites and can be made via a modular condensation reaction starting from primary amines. Their molecular and electronic structures, stability, and strain energies are compared with closely related PN or hydrocarbon bicyclic systems.","PeriodicalId":71,"journal":{"name":"Dalton Transactions","volume":"18 1","pages":""},"PeriodicalIF":4.0,"publicationDate":"2025-09-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145133470","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Regulating Hydroxyl Species over Pd-based Nanowires towards Enhanced Direct Electrooxidation of Ethylene to Ethylene Glycol","authors":"Shengyu Hu, CuiYu Li, Hui Jin, Dandan Sun, Yachong Wang, Jie Cao, Qiaoli Chen, Yihan Zhu","doi":"10.1039/d5dt01958c","DOIUrl":"https://doi.org/10.1039/d5dt01958c","url":null,"abstract":"Electro-catalytic ethylene oxidation presents a promising avenue for selective ethylene glycol production, circumventing the drawbacks of traditional harsh catalytic methods. Despite challenges like low selectivity and current density, innovative catalyst designs have emerged. This study introduces a novel PdAuBi alloy nanowires synthesized via a simple wet chemical route. The Au atoms doping enhances catalytic activity by reducing hydroxyl binding energy while Bi atoms increase hydroxyl coverage, promoting efficient ethylene oxidation and EG production. Remarkably, the PdAuBi nanowires exhibit Faraday efficiency exceeding 72% with liquid products selectivity of 87%, surpassing commercial Pd/C catalysts. In-situ electrochemical infrared spectroscopy further elucidates the transformation process, emphasizing the role of hydroxyl regulation in enhancing ethylene to ethylene glycol conversion.","PeriodicalId":71,"journal":{"name":"Dalton Transactions","volume":"56 1","pages":""},"PeriodicalIF":4.0,"publicationDate":"2025-09-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145134108","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Ming-Zhao Li, Dan Qin, Juan Chen, Qi Wei, Guo-Yu Yang
{"title":"Two Alkali Metal Borates Built by {Li@B 14 } and {B 15 } Cluster Units","authors":"Ming-Zhao Li, Dan Qin, Juan Chen, Qi Wei, Guo-Yu Yang","doi":"10.1039/d5dt02076j","DOIUrl":"https://doi.org/10.1039/d5dt02076j","url":null,"abstract":"Two alkali metal borates, K7[{Li@B12O18(OH)4}{BO(OH)3}2] (1) and LiNa2K2[B15O25] (2), were successfully synthesized via mid-temperature hydrothermal methods. 1 features a Li-centered [{Li@B12O18(OH)4}{BO(OH)3}2]7- ({Li@B14}) cluster, forming a 3D supramolecular framework through hydrogen bonds. Notably, the {B14} cluster is reported for the first time, containing a [12:6Δ+6T]-configured [B12O18(OH)6]6- cluster terminally decorated with two BO(OH)3 tetrahedra. By varying the reactant concentrations and temperature based on 1, 2 was obtained, achieving the expansion of dimensionality. 2 exhibits a 3D open-framework templated by three kinds of distinct alkali metal ions (Li+, Na+, K+), and represents a rare example of B15O29-based framework obtained under hydrothermal conditions. The {B15} cluster is formed by a [12:4(3:2Δ+T)]-type [B12O24]12- cluster linked to a B3O7 ring. Both compounds exhibit ultraviolet (UV) cut-off edges and moderate birefringence, indicating promising potential for UV optical applications.","PeriodicalId":71,"journal":{"name":"Dalton Transactions","volume":"15 1","pages":""},"PeriodicalIF":4.0,"publicationDate":"2025-09-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145134114","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Structural and electronic tuning of hybrid metal thiocyanate N-oxides.","authors":"Grace M Robertson,Adam Jaffe","doi":"10.1039/d5dt02188j","DOIUrl":"https://doi.org/10.1039/d5dt02188j","url":null,"abstract":"Hybrid metal thiocyanates are highly tailorable materials isolable under mild synthetic conditions. By varying pyridine-N-oxide derivatives within manganese, cobalt, and nickel congeners, we show fine-tuning of structural and electronic features depending on molecular substituent and metal selection, providing a roadmap for application-specific customization and potential property-tuning.","PeriodicalId":71,"journal":{"name":"Dalton Transactions","volume":"1 1","pages":""},"PeriodicalIF":4.0,"publicationDate":"2025-09-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145127409","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
S. Priyadharshni, Pugalenthi Ramesh, M. Kalaiyarasi, K. Gopi, Abdullah K. Alanazi, Shaik Gouse Peera
{"title":"A novel synthesis of hybrid graphene oxide as a dual-functional fluorescent chemosensor for Ti4+ ion detection and antibacterial performance via simultaneous oxidation and functionalization","authors":"S. Priyadharshni, Pugalenthi Ramesh, M. Kalaiyarasi, K. Gopi, Abdullah K. Alanazi, Shaik Gouse Peera","doi":"10.1039/d5dt01460c","DOIUrl":"https://doi.org/10.1039/d5dt01460c","url":null,"abstract":"Functionalized graphene oxide (GO), a versatile two-dimensional material, is synthesized by surface modification and exhibits remarkable physical and chemical properties, making it attractive for a wide range of applications. In this work, we present a unique one-step approach that simultaneously oxidizes and functionalizes graphite using <em>Calotropis gigantea</em> latex as a natural reagent. The latex functions as an oxidizing and functionalizing agent, introducing bioactive compounds and oxygen- and nitrogen-rich functional groups onto the GO surface under ambient conditions (Bio@HGO). This method minimizes the use of hazardous reagents and introduces a high density of surface functional groups on GO sheets suitable for metal ion interactions. The synthesized material was characterized using PXRD, FE-SEM, XPS, Raman, FTIR, and BET analyses to confirm the successful functionalization by using natural latex. The introduction of oxygenated and nitrogen-containing groups from <em>Calotropis gigantea</em> latex is found to improve dispersion stability and enhance the affinity for Ti<small><sup>4+</sup></small> metal ion detection. Electrochemical investigations have confirmed that the material exhibits high sensitivity and selectivity towards Ti<small><sup>4+</sup></small> ions, with a distinguishable and measurable response in the given experimental concentration range. This work highlights the potential of <em>Calotropis gigantea</em> latex-derived materials for the development of graphene-based sensors, offering a sustainable route for environmental monitoring of toxic metals such as Ti<small><sup>4+</sup></small>. In addition, the potential antibacterial activity of Bio@HGO was also confirmed against <em>Pseudomonas aeruginosa</em> and <em>Escherichia coli</em> bacteria, with zones of inhibition of 0.95, 1.57, and 1.90 mm and 1.25, 1.45, and 2.15 mm at 20, 40, and 80 μg mL<small><sup>−1</sup></small> concentrations of Bio@HGO, respectively.","PeriodicalId":71,"journal":{"name":"Dalton Transactions","volume":"99 1","pages":""},"PeriodicalIF":4.0,"publicationDate":"2025-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145116280","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Synthesis, characterization, and photocatalytic performance of 2D/1D graphene/Ag–Ag2S hybrid nanocomposites","authors":"Lala Gahramanli, Mustafa Muradov, MahammadBaghir Baghirov, Goncha Eyvazova, Stefano Bellucci, Cristian Vacacela Gomez, Talia Tene, Rana Khankishiyeva","doi":"10.1039/d5dt01999k","DOIUrl":"https://doi.org/10.1039/d5dt01999k","url":null,"abstract":"The rational integration of different-dimensional nanostructures offers a powerful platform for engineering synergistic functionalities in photocatalysis. Herein, we report the controllable synthesis of novel 2D/1D graphene/silver–silver sulphide (Ag–Ag<small><sub>2</sub></small>S) hybrid nanocomposites, wherein 1D Ag–Ag<small><sub>2</sub></small>S nanowires (NWs) are uniformly anchored onto conductive graphene sheets, affording a hierarchical hybrid structure with tailored optoelectronic properties. Structural characterization <em>via</em> X-ray Diffraction (XRD) confirmed the coexistence of crystalline Ag, Ag<small><sub>2</sub></small>S, and Ag<small><sub>2</sub></small>O phases, evidencing both hybridization and partial oxidation during growth. Complementary Scanning Electron Microscopy (SEM) imaging revealed a homogeneous distribution of NWs across the graphene scaffold, ensuring maximized interfacial contact. Optical investigations demonstrated distinct band gap features (2.5 eV for Ag<small><sub>2</sub></small>S, 3.8 eV for Ag NWs, and 4.6 eV for Ag<small><sub>2</sub></small>O). In comparison, the composite exhibited dual transitions at 3.28 eV and 4.72 eV, attributed to interfacial charge transfer between Ag<small><sub>2</sub></small>S and graphene, alongside enhanced plasmonic carrier dynamics. FTIR analyses further corroborated the hybrid composition, highlighting O–H and C<img alt=\"[double bond, length as m-dash]\" border=\"0\" src=\"https://www.rsc.org/images/entities/char_e001.gif\"/>C stretching vibrations of graphene, C<img alt=\"[double bond, length as m-dash]\" border=\"0\" src=\"https://www.rsc.org/images/entities/char_e001.gif\"/>O bands from surface PVP ligands, and Ag–S/Ag–O vibrational modes consistent with XRD assignments. Harnessing these tailored structural and electronic attributes, the graphene/Ag–Ag<small><sub>2</sub></small>S heterostructures exhibited markedly superior photocatalytic activity toward methylene blue (MB) degradation, achieving a maximum efficiency of 89.55% under acidic conditions (pH 3) after 300 min of irradiation. Kinetic analysis revealed the highest rate constant (0.386 min<small><sup>−1</sup></small>) for the graphene/Ag–Ag<small><sub>2</sub></small>S nanocatalyst in acidic medium, surpassing both pristine Ag NWs and Ag–Ag<small><sub>2</sub></small>S. This work highlights the potential of spatially engineered graphene-based heterostructures to modulate band structures, enhance charge carrier transport, and thereby improve selective photocatalytic dye removal.","PeriodicalId":71,"journal":{"name":"Dalton Transactions","volume":"28 1","pages":""},"PeriodicalIF":4.0,"publicationDate":"2025-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145116288","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Albert T. Schwarz, Nele Petersen, Markus Ströbele, David Enseling, Thomas Jüstel, Adam Slabon, H.-Jürgen Meyer
{"title":"A mixed-anion compound based upon a [Pb4O4] heterocubane unit: synthesis, structure and electronic properties of Pb8O4I6(CN2)","authors":"Albert T. Schwarz, Nele Petersen, Markus Ströbele, David Enseling, Thomas Jüstel, Adam Slabon, H.-Jürgen Meyer","doi":"10.1039/d5dt01979f","DOIUrl":"https://doi.org/10.1039/d5dt01979f","url":null,"abstract":"The present study reports the synthesis, crystal structure, and electronic properties of the lead–oxide–iodide–carbodiimde Pb<small><sub>8</sub></small>O<small><sub>4</sub></small>I<small><sub>6</sub></small>(CN<small><sub>2</sub></small>). The n-type semiconducting compound was obtained <em>via</em> ceramic method from PbI<small><sub>2</sub></small>, PbO and Pb(CN<small><sub>2</sub></small>), yielding an air stable, dark yellow crystalline material. Single-crystal X-ray diffraction revealed the monoclinic space group <em>C</em>2/<em>c</em> featuring a heterocubane-type [Pb<small><sub>4</sub></small>O<small><sub>4</sub></small>] motif interconnected by iodide bridges and (NCN)<small><sup>2−</sup></small> units. The optical properties were characterized by diffuse reflectance UV-Vis spectroscopy, Mott–Schottky analysis, and photoluminescence spectroscopy, providing insights into the electronic structure.","PeriodicalId":71,"journal":{"name":"Dalton Transactions","volume":"18 1","pages":""},"PeriodicalIF":4.0,"publicationDate":"2025-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145116246","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Takumi Masuda, Takuya Hikino, Rei Umeda, Atsushi Shimojima, Yasushi Sekine
{"title":"Porous silica materials derived from cage-siloxane: structural confinement and stabilisation of dispersed Au(0) nanoparticles","authors":"Takumi Masuda, Takuya Hikino, Rei Umeda, Atsushi Shimojima, Yasushi Sekine","doi":"10.1039/d5dt01824b","DOIUrl":"https://doi.org/10.1039/d5dt01824b","url":null,"abstract":"Highly dispersed gold(Au) species exhibit unique catalytic properties that differ considerably from those of bulk Au or larger particles. However, achieving such dispersion while preserving their intrinsic characteristics remains a challenge. This difficulty often arises because conventional methods can alter the characteristics of the Au itself. This study addresses this issue using silica, a support material known for its weak interaction with active metal species. Specifically, we developed a novel nanoporous silica support functionalised with hydrosilyl groups using a cage-siloxane as a building block. These groups enable on-site reduction of Au<small><sup>3+</sup></small> ions, allowing highly dispersed Au loading without introducing strongly interacting ligands. Importantly, the dispersion was retained even after calcination, indicating a confinement effect within the porous structure. This approach offers a promising strategy for stabilising Au species on inert supports, potentially advancing the design of robust and efficient Au-silica catalysts for heterogeneous catalysis.","PeriodicalId":71,"journal":{"name":"Dalton Transactions","volume":"9 1","pages":""},"PeriodicalIF":4.0,"publicationDate":"2025-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145116281","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Dalal Alezi, Abrar S Iskandrani, Ehab M. M. Ali, Bandar Babgi
{"title":"Biochemical Assays for Evaluating Anticancer Activity and Validating Mechanisms of Action in Coordination/Organometallic Compounds (Review)","authors":"Dalal Alezi, Abrar S Iskandrani, Ehab M. M. Ali, Bandar Babgi","doi":"10.1039/d5dt01851j","DOIUrl":"https://doi.org/10.1039/d5dt01851j","url":null,"abstract":"Research on metal-based coordination and organometallic compounds is flourishing due to their potential to overcome drug resistance, reduce systemic toxicity, and target diverse cellular pathways. Driven by the success of cisplatin and other Pt-based drugs, transition metal complexes such as Pt(II/IV), Ru(II/III), Au(I/III), Cu(I/II), and Pd(II) have been widely investigated for their ability to interact with biomolecular targets, including DNA, proteins, and enzymes. However, the development of effective anticancer metallodrugs requires rigorous mechanistic validation, as this field is often hindered by overinterpretation and poorly designed studies. This review emphasizes the necessity of multi-assay strategies, integrating classical cytotoxicity and apoptosis assays with advanced methods such as CETSA and TPP, to clarify mechanisms of action. By correlating assay outcomes with molecular mechanisms, including redox modulation, apoptosis, proteasome inhibition, and non-apoptotic pathways such as ferroptosis and necroptosis, researchers can design more selective and multitargeted agents. This approach aims to enhance reproducibility, prevent overinterpretation, and accelerate mechanism-based drug development.","PeriodicalId":71,"journal":{"name":"Dalton Transactions","volume":"8 1","pages":""},"PeriodicalIF":4.0,"publicationDate":"2025-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145116284","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Feng-Cai Li, Xi-Li Li, Yu-Zhe Pan, Cong-Li Gao, Qing-Xiang Yang
{"title":"Two reduced phosphomolybdate-based metal–organic complexes modified by tunable bis-1H-benzimidazole ligands for enhanced photocatalytic Cr(VI) reduction","authors":"Feng-Cai Li, Xi-Li Li, Yu-Zhe Pan, Cong-Li Gao, Qing-Xiang Yang","doi":"10.1039/d5dt01698c","DOIUrl":"https://doi.org/10.1039/d5dt01698c","url":null,"abstract":"The strategic development of polyoxometalate-based complexes for enhanced photocatalytic Cr(<small>VI</small>) reduction in wastewater remains a significant challenge in environmental remediation. In this work, two flexible bis-1<em>H</em>-benzimidazole ligand-functionalized reduced phosphomolybdate-based complexes with the formulas (H<small><sub>2</sub></small>bbbm)<small><sub>3</sub></small>[Mn(H<small><sub>2</sub></small>O)<small><sub>2</sub></small>]{Mn[P<small><sub>4</sub></small>Mo<small><sup>V</sup></small><small><sub>6</sub></small>O<small><sub>31</sub></small>H<small><sub>7</sub></small>]<small><sub>2</sub></small>}·8H<small><sub>2</sub></small>O (<strong>1</strong>) and (H<small><sub>2</sub></small>bbbm)<small><sub>3</sub></small>{Ni[P<small><sub>4</sub></small>Mo<small><sup>V</sup></small><small><sub>6</sub></small>O<small><sub>31</sub></small>H<small><sub>8</sub></small>]<small><sub>2</sub></small>}·6H<small><sub>2</sub></small>O (<strong>2</strong>) (bbbm = 1,1′-(1,4-butanediyl)bis-1<em>H</em>-benzimidazole) were hydrothermally prepared and comprehensively characterized by multiple analytical techniques. Single-crystal analysis reveals that compound <strong>1</strong> exhibits a 3D network structure constructed through hierarchical assembly: Mn<small><sup>2+</sup></small>-bridged {Mn[P<small><sub>4</sub></small>Mo<small><sub>6</sub></small>O<small><sub>31</sub></small>H<small><sub>7</sub></small>]<small><sub>2</sub></small>}<small><sup>8−</sup></small> dimers first form 1D inorganic chains, which are then interconnected by protonated [H<small><sub>2</sub></small>bbbm]<small><sup>2+</sup></small> ions <em>via</em> supramolecular interactions to generate the final 3D architecture. However, compound <strong>2</strong> is revealed as a 3D supramolecular network, which is formed by classical 0D {Ni[P<small><sub>4</sub></small>Mo<small><sup>V</sup></small><small><sub>6</sub></small>O<small><sub>31</sub></small>H<small><sub>8</sub></small>]<small><sub>2</sub></small>}<small><sup>6−</sup></small> dimeric clusters and protonated [H<small><sub>2</sub></small>bbbm]<small><sup>2+</sup></small> ions. When employed as visible-light photocatalysts, compounds <strong>1</strong> and <strong>2</strong> manifested excellent photocatalytic performance in Cr(<small>VI</small>) reduction with removal rates of 99.25% for <strong>1</strong> and 98.09% for compound <strong>2</strong> after only 8 minutes, respectively. In addition, the reduction process followed pseudo-first-order kinetics with respect to Cr(<small>VI</small>) concentration, exhibiting outstanding <em>k</em> values of 0.623 min<small><sup>−1</sup></small> for compound <strong>1</strong> and 0.511 min<small><sup>−1</sup></small> for compound <strong>2</strong>, respectively. Notably, compound <strong>1</strong> demonstrates superior photocatalytic performance. Meanwhile, both compounds still displayed excellent capability for Cr(<small>VI</small>) reduction in real water samples, underscoring","PeriodicalId":71,"journal":{"name":"Dalton Transactions","volume":"195 1","pages":""},"PeriodicalIF":4.0,"publicationDate":"2025-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145116247","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}