Chemical Science Blog

New month, new HOT articles!

We are pleased to share a selection of our referee-recommended HOT articles for March 2021. We hope you enjoy reading these articles, congratulations to all the authors whose articles are featured! As always, Chemical Science is free to read & download.

You can explore our full 2021 Chemical Science HOT Article Collection here!

Browse a selection of our March HOT articles below:

Photoactive electron donor–acceptor complex platform for Ni-mediated C(sp³)–C(sp²) bond formation
Lisa Marie Kammer, Shorouk O. Badir, Ren-Ming Hu and Gary A. Molander
Chem. Sci., 2021, Advance Article

Exploiting host–guest chemistry to manipulate magnetic interactions in metallosupramolecular M₄L₆ tetrahedral cages
Aaron J. Scott, Julia Vallejo, Arup Sarkar, Lucy Smythe, E. Regincós Martí, Gary S. Nichol, Wim T. Klooster, Simon J. Coles, Mark Murrie, Gopalan Rajaraman, Stergios Piligkos, Paul J. Lusby and Euan K. Brechin
Chem. Sci., 2021, Advance Article

DNA-based constitutional dynamic networks as functional modules for logic gates and computing circuit operations
Zhixin Zhou, Jianbang Wang, R. D. Levine, Francoise Remacle and Itamar Willner
Chem. Sci., 2021, Advance Article

Asymmetric synthesis of dihydro-1,3-dioxepines by Rh(ii)/Sm(iii) relay catalytic three-component tandem [4 + 3]-cycloaddition
Chaoran Xu, Jianglin Qiao, Shunxi Dong, Yuqiao Zhou, Xiaohua Liu and Xiaoming Feng
Chem. Sci., 2021, Advance Article

Targeted 1,3-dipolar cycloaddition with acrolein for cancer prodrug activation
Ambara R. Pradipta, Peni Ahmadi, Kazuki Terashima, Kyohei Muguruma, Motoko Fujii, Tomoya Ichino, Satoshi Maeda and Katsunori Tanaka
Chem. Sci., 2021, Advance Article

Three-membered cyclic digermylenes stabilised by an N-heterocyclic carbene
Zhaowen Dong, Jan Mathis Winkler, Marc Schmidtmann and Thomas Müller
Chem. Sci., 2021, Advance Article

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The mighty gear is essential in machines. Even when scaling down the size of the machine, like from cars to small wristwatches, gears are necessary to transmit motion and mechanical power across the system. Machines can be decreased in size all the way to the nanoscale with molecular machines, where individual molecules can produce mechanical motion in response to external stimuli. Just as in macroscopic machines (e.g. cars), the addition of gears to nanomachines is needed for creating more complex assemblies with controlled motion, extending the applications of these molecules beyond the fundamental.

Figure 1. A schematic representation of the design for trains of molecular gears.

A team of researchers from France and Japan have now reported a series of molecular gears, with the aim of achieving correlated motion within trains of gears across a surface (Figure 1). To achieve this correlated motion, the researchers designed desymmetrised organometallic molecular gears based around star-shaped ruthenium piano-stool complexes. These molecular gears incorporated a facially capping hydrotris(indazolyl)borate ligand at one end, which both anchors the complex to the surface and lifts the central metal centre away to enable a rotational axis around the ruthenium. At the other end, the molecular gears have a cyclopentadienyl core to act as the cogwheel, functionalised with bulky groups that mimic the teeth that allow correlated motion between the gears (Figure 2). The researchers set out to make these molecular gears with lower symmetry to allow for detailed on-surface mechanical studies, by changing one of the five teeth (i.e. the functionalised groups around the cyclopentadienyl core) to include a steric or chemical tag– this is shown in Figures 1 and 2 by the green section.

Figure 2. Chemical structure of the molecular gears, with the anchoring ligand in black beneath the ruthenium centre and the rotating cogwheel cyclopentadienyl ligand in blue. The rectangles represent the teeth of the cogwheel as the bulky groups added to the central cyclopentadienyl core, where one of the five teeth (coloured green rather than blue) is sterically or chemically changed to lower the symmetry.

The researchers developed a modular synthetic approach to achieve desymmetrisation of the star-shaped ruthenium molecular gears, based on post-functionalisation of the central cyclopentadienyl core with Ni(II) porphyrins to act as the teeth of the cogwheels. They used an unsymmetrical 1,2,3,4,5-penta(p-halogenophenyl)cyclopentadienyl as the core; the p-halogenophenyl groups are all pre-activated to allow for further functionalisation, but one of the five is a p-iodophenyl group that chemoselectively reacts over the other four p-bromophenyl groups. Scheme 1 shows a sequential synthetic route towards one of the desymmetrised molecular gears: the p-iodophenyl group is first functionalised with a unique porphyrin (shown in green), before subsequent functionalisation of the four other p-bromophenyl groups with the same porphyrins (shown in blue), all using palladium-catalysed cross-coupling reactions.

Scheme 1. An example synthetic route towards desymmetrised molecular This example shows a sterically tagged cogwheel, where the unique porphyrinic tooth (in green) contains a longer linker than the four other teeth (in blue).

The researchers varied their approach to changing the unique porphyrinic tooth for the molecular gear, using either steric tagging (with one longer linker between the porphyrin and p-halogenophenyl group) or chemical tagging, using either one distinct electron-deficient porphyrin (achieved by using p-cyanophenyl substituents on the tetrapyrrole core) or one distinct metal porphyrin (Zn(II) instead of Ni(II)). The synthesised desymmetrised molecular gears were characterised using spectroscopic and electrochemical techniques, and the researchers are currently undertaking further mechanical studies to understand the correlated motion of these gears on surfaces.

To find out more, please read:

Desymmetrised pentaporphyrinic gears mounted on metallo-organic anchors

Seifallah Abid, Yohan Gisbert, Mitsuru Kojima, Nathalie Saffon-Merceron, Jérôme Cuny, Claire Kammerer* and  Gwénaël Rapenne*

Chem. Sci., 2021, Advance Article

About the blogger:

Dr. Samantha Apps recently finished her post as a Postdoctoral Research Associate in the Lu Lab at the University of Minnesota, USA, and obtained her PhD in 2019 from Imperial College London, UK. She has spent the last few years, both in her PhD and postdoc, researching synthetic nitrogen fixation and transition metal complexes that can activate and functionalise dinitrogen. Outside of the lab, you’ll likely find her baking at home, where her years of synthetic lab training has sparked a passion in kitchen chemistry too.

New month, new HOT articles!

We are pleased to share a selection of our referee-recommended HOT articles for February 2021. We hope you enjoy reading these articles, congratulations to all the authors whose articles are featured! As always, Chemical Science is free to read & download.

You can explore our full 2021 Chemical Science HOT Article Collection here!

Browse a selection of our February HOT articles below:

Towards the rational design of ylide-substituted phosphines for gold(i)-catalysis: from inactive to ppm-level catalysis
Jens Handelmann, Chatla Naga Babu, Henning Steinert, Christopher Schwarz, Thorsten Scherpf, Alexander Kroll and Viktoria H. Gessner;
Chem. Sci., 2021, Advance Article

Ruthenium-catalyzed formal sp³ C–H activation of allylsilanes/esters with olefins: efficient access to functionalized 1,3-dienes
Dattatraya H. Dethe, Nagabhushana C. Beeralingappa, Saikat Das and Appasaheb K. Nirpal
Chem. Sci., 2021, Advance Article

Symmetry-related residues as promising hotspots for the evolution of de novo oligomeric enzymes
Jaeseung Yu, Jinsol Yang, Chaok Seok and Woon Ju Song
Chem. Sci., 2021, Advance Article

Desymmetrised pentaporphyrinic gears mounted on metallo-organic anchors
Seifallah Abid, Yohan Gisbert, Mitsuru Kojima, Nathalie Saffon-Merceron, Jérôme Cuny, Claire Kammerer and Gwénaël Rapenne
Chem. Sci., 2021, Advance Article

The atomic-level regulation of single-atom site catalysts for the electrochemical CO₂ reduction reaction
Qingyun Qu, Shufang Ji, Yuanjun Chen, Dingsheng Wang and Yadong Li
Chem. Sci., 2021, Advance Article

Chemical tuning of spin clock transitions in molecular monomers based on nuclear spin-free Ni(ii)
Marcos Rubín-Osanz, François Lambert, Feng Shao, Eric Rivière, Régis Guillot, Nicolas Suaud, Nathalie Guihéry, David Zueco, Anne-Laure Barra, Talal Mallah and Fernando Luis
Chem. Sci., 2021, Advance Article

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Methylene (-CH₂) is one of the simplest and most important building blocks for chemical synthesis. Methylenation reactions add methylene groups to molecules and often proceed using transition metal methylene complexes. Titanium methylene complexes are excellent for methylenations and have been used in a variety of reactions such as olefin metathesis, polymerisations or olefination of carbonyls. Early examples of such titanium methylenation reagents include Tebbe’s reagent that can generate a terminally bound mononuclear titanium methylidene, Cp₂Ti=CH₂ (Figure 1a), or a methylenation reagent prepared from CH₂Br₂, Zn and TiCl₄ (with catalytic lead), referred to as ‘CH₂X₂-Zn(Pb)-TiCl₄’.

Figure 1. (a) The titanium methylidene methylenating reagent from the Tebbe or Petasis reagents. (b) The first key step for the ‘CH₂X₂-Zn(Pb)-TiCl₄’ methylenating reagent: generation of the zinc methylene. (c) The second key step for ‘CH₂X₂-Zn(Pb)-TiCl₄’ methylenating reagent: reduction of Ti(IV) to Ti(III).

Researchers from Japan have been interested in the ‘CH₂X₂-Zn(Pb)-TiCl₄’ methylenation reagent and in particular, deducing the molecular structure of the reactive species. Earlier studies have revealed two key steps in the preparation of this methylenating reagent: the first is that a zinc methylene species, ‘CH₂(ZnX₂)’, is formed by the reaction of CH₂X₂ with Zn and catalytic lead (Figure 1b), and the second is that the Ti(IV) chloride reagent is reduced to Ti(III) chloride by Zn(0) simultaneously (Figure 1c). The researchers hypothesised that a reactive titanium methylidene species (similar to that generated from Tebbe’s reagent in Figure 1a) should form via a transmetallation event between the zinc methylene species and the Ti(III) chloride, and thus be the reactive methylenating species of the ‘CH₂X₂-Zn(Pb)-TiCl₄’ methylenation reagent.

Scheme 1. The synthesis of the titanium methylene complex 3 generated via transmetallation.

To confirm their hypothesis, the researchers studied the reactivity of multiple combinations of a zinc methylene species (1) and titanium(III or IV) chloride reagents, with and without additional ligands (such as phosphines, amines or ethers). The researchers found that most combinations of reagents resulted in methylene loss via the generation of methane or ethylene, but the combination of TMEDA adducts of the zinc methylene (1a) and Ti(III) chloride (2) gave clean conversion to a new titanium methylene species 3 (Scheme 1). Although the researchers originally hypothesised the formation of a mononuclear titanium methylidene via methylene transmetallation from zinc to titanium, the new species 3 was revealed to be a dinuclear, bridging methylene complex. The dinuclear species was characterised using NMR spectroscopy and single-crystal X-ray diffraction techniques, and the connectivity of the bridging methylene was conclusively established by the X-ray crystal structure.

After elucidating the structure of the dinuclear titanium methylene complex, the researchers tested 3 as a methylenating reagent and observed successful methylene transfer reactions from 3 to esters, terminal olefins and 1,3-dienes. A further computational mechanistic study for the reactivity of 3 and a 1,3-diene was performed, where the DFT calculations indicated a mononuclear titanium methylidene as the reactive species, generated from the dinuclear titanium methylene complex. These calculations corroborate the researchers’ initial hypothesis and correlate with Tebbe’s reagent, where the reactive methylenating agent is also a mononuclear titanium methylidene that is generated from a dinuclear bridging methylene complex.

To find out more, please read:

Structural elucidation of a methylenation reagent of esters: synthesis and reactivity of a dinuclear titanium(III) methylene complex

Takashi Kurogi,* Kaito Kuroki, Shunsuke Moritani and Kazuhiko Takai*

Chem. Sci., 2021, Advance Article

About the blogger:

Dr. Samantha Apps recently finished her post as a Postdoctoral Research Associate in the Lu Lab at the University of Minnesota, USA, and obtained her PhD in 2019 from Imperial College London, UK. She has spent the last few years, both in her PhD and postdoc, researching synthetic nitrogen fixation and transition metal complexes that can activate and functionalise dinitrogen. Outside of the lab, you’ll likely find her baking at home, where her years of synthetic lab training has sparked a passion in kitchen chemistry too.

New year, new HOT article collection!

We are pleased to share a selection of our referee-recommended HOT articles for January 2021. We hope you enjoy reading these articles and congratulations to all the authors whose articles are featured! As always, Chemical Science is free to read & download.

You can explore our full 2021 Chemical Science HOT Article Collection here!

Browse a selection of our January HOT articles below:

Directed evolution of cyclic peptides for inhibition of autophagy
Joshua P. Gray, Md. Nasir Uddin, Rajan Chaudhari, Margie N. Sutton, Hailing Yang, Philip Rask, Hannah Locke, Brian J. Engel, Nefeli Batistatou, Jing Wang, Brian J. Grindel, Pratip Bhattacharya, Seth T. Gammon, Shuxing Zhang, David Piwnica-Worms, Joshua A. Kritzer, Zhen Lu, Robert C. Bast, Jr. and Steven W. Millward
Chem. Sci., 2021, Advance Article

Conformational analysis by UV spectroscopy: the decisive contribution of environment-induced electronic Stark effects
Jeremy Donon, Sana Habka, Michel Mons, Valérie Brenner and Eric Gloaguen
Chem. Sci., 2021, Advance Article

Identifying key mononuclear Fe species for low-temperature methane oxidation
Tao Yu, Zhi Li, Wilm Jones, Yuanshuai Liu, Qian He, Weiyu Song, Pengfei Du, Bing Yang, Hongyu An, Daniela M. Farmer, Chengwu Qiu, Aiqin Wang, Bert M. Weckhuysen, Andrew M. Beale and Wenhao Luo
Chem. Sci., 2021, Advance Article

A feasible approach for automatically differentiable unitary coupled-cluster on quantum computers
Jakob S. Kottmann, Abhinav Anand and Alán Aspuru-Guzik
Chem. Sci., 2021, Advance Article

A photoswitchable strapped calix[4]pyrrole receptor: highly effective chloride binding and release
David Villarón, Maxime A. Siegler and Sander J. Wezenberg
Chem. Sci., 2021, Advance Article

Controlling multiple orderings in metal thiocyanate molecular perovskites A_x{Ni[Bi(SCN)₆]}
Jie Yie Lee, Sanliang Ling, Stephen P. Argent, Mark S. Senn, Laura Cañadillas-Delgado and Matthew J. Cliffe
Chem. Sci., 2021, Advance Article

Structural elucidation of a methylenation reagent of esters: synthesis and reactivity of a dinuclear titanium(iii) methylene complex
Takashi Kurogi, Kaito Kuroki, Shunsuke Moritani and Kazuhiko Takai
Chem. Sci., 2021, Advance Article

Submit to Chemical Science today! Check out our author guidelines for information on our article types or find out more about the advantages of publishing in a Royal Society of Chemistry journal.

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Activating a bond is the first step towards bond breaking processes for synthesis and catalysis. Despite the major role of transition metals in a variety of bond activation processes, C–X bond activation of halogenated benzenes (PhX, X = F, Cl, Br, I) is still challenging; there are very few examples of metal···XPh complexes, even though they are crucial for C–X bond activation and catalysis. There are even fewer examples of main group metal···XPh complexes, with no examples of main group complexes of bromobenzene or iodobenzene.

Researchers in Germany have been studying cationic magnesium complexes with the β-diketiminate ligand (^RBDI, R = methyl or t-butyl), where their extreme Lewis acidity makes them ideal candidates for halobenzene complex formation for C–X activation. Building upon their previous findings of the formation of a Mg-chlorobenzene complex, the researchers have now demonstrated the preparation of the full series of halobenzene complexes, including the first examples of coordination of bromobenzene and iodobenzene to a main group metal, as shown in Scheme 1.

Scheme 1. Syntheses of Mg-XPh complexes (X = F, Cl, Br, I)

The researchers found that both the smaller methyl-substituted complex, (^MeBDI)Mg⁺, and the bulkier t-butyl substituted complex, (^tBuBDI)Mg⁺, were able to bind fluorobenzene to form Mg···FPh complexes (1–3 in, Scheme 1), owing to the high polarity of PhF that can compete with the Mg···B(C₆F₅)₄^–  (the magnesium–anion) interaction. The other halobenzene complexes (Mg···XPh for X = Cl, Br, I; VI, 4, 5) could only be accessed with the use of the bulkier ^tBuBDI ligand. This was attributed to the fact that the bulky t-butyl substituents essentially turn off the Mg···B(C₆F₅)₄^– interaction, which in turn allows the less polar PhX halobenzenes to bind to the magnesium centre.

The researchers isolated and fully characterised the Mg-halobenzene complexes, and used X-ray crystallography and DFT calculations to further understand their properties. The interaction of the strongly Lewis acidic (BDI)Mg⁺ cation with the halobenzene resulted in C–X activation as shown by elongation of the C–X bonds in the crystal structures. Additionally, the solid-state structures showed that the Mg···X–Ph angle is the most linear for PhF and decreases in size (i.e. bends more) for the larger halogens. This increased bending for the larger halogens is explained by the halogen σ-hole, which is a region of positive electrostatic potential on the surface of the halogen opposite to the C–X bond, that increases with halogen size. As shown by the schematic in Figure 1, the presence of a larger halogen hole forces a more acute Mg···X interaction relative to the C–X bond.

Figure 1. Top: Schematic showing the halogen σ-hole (red = positive electrostatic potential, blue = negative electrostatic potential), with possible coordination sites for Mg. Bottom: Electrostatic maps for the halobenzenes.

DFT calculations were also performed and were in good agreement with the solid-state experimental parameters. The researchers calculated complexation enthalpies between 11 and 13 kcal mol^-1, which are weak but still indicate a Mg···X–Ph interaction. This interaction ultimately indicates C–X bond activation, signifying that these main group complexes show potential for C–X bond breaking processes in future catalytic applications.

To find out more, please read:

Magnesium–halobenzene bonding: mapping the halogen sigma-hole with a Lewis-acidic complex

Alexander Friedrich, Jürgen Pahl, Jonathan Eyselein, Jens Langer, Nico van Eikema Hommes, Andreas Görling and Sjoerd Harder*

Chem. Sci., 2021, Advance Article

About the blogger:

Dr. Samantha Apps recently finished her post as a Postdoctoral Research Associate in the Lu Lab at the University of Minnesota, USA, and obtained her PhD in 2019 from Imperial College London, UK. She has spent the last few years, both in her PhD and postdoc, researching synthetic nitrogen fixation and transition metal complexes that can activate and functionalise dinitrogen. Outside of the lab, you’ll likely find her baking at home, where her years of synthetic lab training has sparked a passion in kitchen chemistry too.

Hydrogen bonding is all around us. The intermolecular force of attraction between a hydrogen atom bound to an electronegative centre (the hydrogen bond donor, HBD) and another nearby electronegative atom with a lone pair of electrons (the hydrogen bond acceptor, HBA) is present in many chemical structures and can be seen in many biological motifs such as in enzymes or proteins. Beyond a simple HBD-HBA pair (Figure 1a), hydrogen bonding can cascade between multiple HBD-HBA pairs (Figure 1b). In these paired units, the presence of a central proton mediator (e.g. imidazole) can induce polarisation to make the resulting hydrogen bonds stronger, promoting further reactivity and selectivity (Figure 1c).

Figure 1. Hydrogen bonding between donor (D) and acceptor (A) atoms, with the net dipole shown by the arrows beneath. (a) Simple HBD-HBA pair. (b) Cascade hydrogen bonding around a central imidazole proton mediator, that can promote further reactivity with a larger net additive dipole (c).

Some enzymes cleverly make use of cascade hydrogen bonding to control the strength of the hydrogen bonds that form between the limited number of available amino acids. One example is a class of enzymes with a ‘catalytic triad’, whereby a hydrogen bonding array exists between the hydroxyl group of serine, the imidazole group of histidine and the carboxylate group of aspartate residues (Figure 2a). Researchers from South Korea took inspiration from such catalytic triads to create a ‘synthetic triad’ with a biomimetic hydrogen bonding network (Figure 2b, compound 1). The researchers employed a central benzimidazole to their synthetic triad to act as a platform to align the HBD-HBA pairs, instead of the precise three-dimensional structure that would anchor these pairs in enzymes.

Figure 2. (a) Chemical (left) and X-ray (right) structures of the ‘catalytic triad’ in the active site of the enzyme serine protease. (b) Chemical structure (left) and computational model (right) of the ‘synthetic triad’ designed by the researchers.

The researchers envisioned that their biomimetic small molecule could be used as a fluorescent probe owing to the photophysical properties of the chosen benzimidazole motif. They designed the probe for cyanide detection, where capture of a toxic cyanide ion turns on fluorescence in the probe (Figure 3c). The design of the probe was therefore influenced with the target application in mind, so the researchers systematically added each HBD-HBA pair around the benzimidazole, as shown in Figure 3b.

Figure 3. (a) Cascade hydrogen bonding around a benzimidazole core. (b) The systematic design of the probe, starting from one HBD-HBA pair up to four pairs. (c) Mechanism of capture of the cyanide ion to turn on fluorescence.

An aldehyde functional group was selected for the first HBD-HBA pair, due to its ability to form hydrogen bonds that can quench the fluorescence in the absence of cyanide (compound 2). The researchers tested compound 2 for cyanide detection and indeed observed fluorescence, but found that the fluorescence also occurred in the presence of a simple Brønsted base. The design of the probe was then iteratively modified until fluorescence was selective for cyanide addition, with a total of four HBD-HBA pairs around the benzimidazole centre that mutually reinforced one another. This strategy shows promise for the design of other fluorescent probes and could also be utilised for other biological targeting applications.

To find out more, please read:

Biomimetic hydrogen-bonding cascade for chemical activation: telling a nucleophile from a base

Hyunchang Park and Dongwhan Lee*

Chem. Sci., 2021, Advance Article

About the blogger:

Dr. Samantha Apps recently finished her post as a Postdoctoral Research Associate in the Lu Lab at the University of Minnesota, USA, and obtained her PhD in 2019 from Imperial College London, UK. She has spent the last few years, both in her PhD and postdoc, researching synthetic nitrogen fixation and transition metal complexes that can activate and functionalise dinitrogen. Outside of the lab, you’ll likely find her baking at home, where her years of synthetic lab training has sparked a passion in kitchen chemistry too.

We are pleased to share a selection of our referee-recommended HOT articles for December. We hope you enjoy reading these articles and congratulations to all the authors whose articles are featured! As always, Chemical Science is free to read & download. You can find our full 2020 HOT article collection here.

Efficacy analysis of compartmentalization for ambient CH₄ activation mediated by a Rh^II metalloradical in a nanowire array electrode
Benjamin S. Natinsky, Brandon J. Jolly, David M. Dumas and Chong Liu
Chem. Sci., 2021, Advance Article
DOI: 10.1039/D0SC05700B, Edge Article

Supertetrahedral polyanionic network in the first lithium phosphidoindate Li₃InP₂ – structural similarity to Li₂SiP₂ and Li₂GeP₂ and dissimilarity to Li₃AlP₂ and Li₃GaP₂
Tassilo M. F. Restle, Volker L. Deringer, Jan Meyer, Gabriele Raudaschl-Sieber and Thomas F. Fässler
Chem. Sci., 2021, Advance Article
DOI: 10.1039/D0SC05851C, Edge Article

One class classification as a practical approach for accelerating π–π co-crystal discovery
Aikaterini Vriza, Angelos B. Canaj, Rebecca Vismara, Laurence J. Kershaw Cook, Troy D. Manning, Michael W. Gaultois, Peter A. Wood, Vitaliy Kurlin, Neil Berry, Matthew S. Dyer and Matthew J. Rosseinsky
Chem. Sci., 2021, Advance Article
DOI: 10.1039/D0SC04263C, Edge Article

Fast reversible isomerization of merocyanine as a tool to quantify stress history in elastomers
Yinjun Chen, C. Joshua Yeh, Qiang Guo, Yuan Qi, Rong Long and Costantino Creton
Chem. Sci., 2021, Advance Article
DOI: 10.1039/D0SC06157C, Edge Article

Peptide sequence mediated self-assembly of molybdenum blue nanowheel superstructures
Shan She, Weimin Xuan, Nicola L. Bell, Robert Pow, Eduard Garrido Ribo, Zoe Sinclair, De-Liang Long and Leroy Cronin
Chem. Sci., 2021, Advance Article
DOI: 10.1039/D0SC06098D, Edge Article

Enhanced voltammetric anion sensing at halogen and hydrogen bonding ferrocenyl SAMs
Robert Hein, Xiaoxiong Li, Paul D. Beer and Jason J. Davis
Chem. Sci., 2021, Advance Article
DOI: 10.1039/D0SC06210C, Edge Article

Magnesium–halobenzene bonding: mapping the halogen sigma-hole with a Lewis-acidic complex
Alexander Friedrich, Jürgen Pahl, Jonathan Eyselein, Jens Langer, Nico van Eikema Hommes, Andreas Görling and Sjoerd Harder
Chem. Sci., 2021, Advance Article
DOI: 10.1039/D0SC06321E, Edge Article

Submit to Chemical Science today! Check out our author guidelines for information on our article types or find out more about the advantages of publishing in a Royal Society of Chemistry journal.

Keep up to date with our latest articles, reviews, collections & more by following us on Twitter. You can also keep informed by signing up to our E-Alerts.