Dr STEPHEN ARGENT's Outputs (69)

Low-Dimensional Metal-Organic Magnets as a Route toward the S = 2 Haldane Phase (2023)
Journal Article
Pitcairn, J., Iliceto, A., Cañadillas-Delgado, L., Fabelo, O., Liu, C., Balz, C., Weilhard, A., Argent, S. P., Morris, A. J., & Cliffe, M. J. (2023). Low-Dimensional Metal-Organic Magnets as a Route toward the S = 2 Haldane Phase. Journal of the American Chemical Society, 145(3), 1783-1792. https://doi.org/10.1021/jacs.2c10916

Metal-organic magnets (MOMs), modular magnetic materials where metal atoms are connected by organic linkers, are promising candidates for next-generation quantum technologies. MOMs readily form low-dimensional structures and so are ideal systems to r... Read More about Low-Dimensional Metal-Organic Magnets as a Route toward the S = 2 Haldane Phase.

Highly electron deficient diketopyrrolopyrroles (2023)
Journal Article
Humphreys, J., Malagreca, F., Hume, P. A., Davies, E. S., Argent, S. P., Bradshaw, T. D., & Amabilino, D. B. (2023). Highly electron deficient diketopyrrolopyrroles. Chemical Communications, 59(12), 1613-1616. https://doi.org/10.1039/d2cc06770f

The synthesis, spectroelectrochemical and structural characteristics of highly electron-accepting diketopyrrrolopyrrole (DPP) molecules with adjoining pyridinium rings is reported, along with an assessment of their toxicity, which is apparently low.... Read More about Highly electron deficient diketopyrrolopyrroles.

Reactions of polyaromatic molecules in crystals under electron beam of the transmission electron microscope (2022)
Journal Article
Fung, K. L., Weare, B. L., Fay, M. W., Argent, S. P., & Khlobystov, A. N. (2023). Reactions of polyaromatic molecules in crystals under electron beam of the transmission electron microscope. Micron, 165, Article 103395. https://doi.org/10.1016/j.micron.2022.103395

Reactivity of a series of related molecules under the 80 keV electron beam have been investigated and correlated with their structures and chemical composition. Hydrogenated and halogenated derivatives of hexaazatrinaphthylene, coronene, and phthaloc... Read More about Reactions of polyaromatic molecules in crystals under electron beam of the transmission electron microscope.

Catalysis enabled synthesis, structures, and reactivities of fluorinated S8-corona[n]arenes (n = 8–12) (2022)
Journal Article
Turley, A. T., Hanson-Heine, M. W. D., Argent, S. P., Hu, Y., Jones, T. A., Fay, M., & Woodward, S. (2023). Catalysis enabled synthesis, structures, and reactivities of fluorinated S8-corona[n]arenes (n = 8–12). Chemical Science, 14(1), 70-77. https://doi.org/10.1039/d2sc05348a

Previously inaccessible large S8-corona[n]arene macrocycles (n = 8-12) with alternating aryl and 1,4-C6F4 subunits are easily prepared on up to gram scales, without the need for chromatography (up to 45% yield, 10 different examples) through new high... Read More about Catalysis enabled synthesis, structures, and reactivities of fluorinated S8-corona[n]arenes (n = 8–12).

Slow magnetic relaxation in Fe(ii) m-terphenyl complexes (2022)
Journal Article
Valentine, A. J., Geer, A. M., Blundell, T. J., Tovey, W., Cliffe, M. J., Davies, E. S., Argent, S. P., Lewis, W., McMaster, J., Taylor, L. J., Reta, D., & Kays, D. L. (2022). Slow magnetic relaxation in Fe(ii) m-terphenyl complexes. Dalton Transactions, 51(47), 18118-18126. https://doi.org/10.1039/d2dt03531f

Two-coordinate transition metal complexes are exciting candidates for single-molecule magnets (SMMs) because their highly axial coordination environments lead to sizeable magnetic anisotropy. We report a series of five structurally related two-coordi... Read More about Slow magnetic relaxation in Fe(ii) m-terphenyl complexes.

Electrocatalytic hydrogen evolution over micro and mesoporous cobalt metal-organic frameworks (2022)
Journal Article
Iqbal, B., Laybourn, A., O'Shea, J. N., Argent, S. P., & Zaheer, M. (2022). Electrocatalytic hydrogen evolution over micro and mesoporous cobalt metal-organic frameworks. Molecular Catalysis, 531, Article 112711. https://doi.org/10.1016/j.mcat.2022.112711

The development of water electrolysis devices is crucial for the sustainable production of green hydrogen fuel. However, the slow kinetics and high overpotential are key shortfalls for hydrogen production during the half-cell hydrogen evolution react... Read More about Electrocatalytic hydrogen evolution over micro and mesoporous cobalt metal-organic frameworks.

Bismuth-Mediated α-Arylation of Acidic Diketones with ortho-Substituted Boronic Acids (2022)
Journal Article
Ruffell, K., Argent, S. P., Ling, K. B., & Ball, L. T. (2022). Bismuth-Mediated α-Arylation of Acidic Diketones with ortho-Substituted Boronic Acids. Angewandte Chemie International Edition, 61(40), Article e202210840. https://doi.org/10.1002/anie.202210840

The α-arylation of cyclic and fluoroalkyl 1,3-diketones is made challenging by the highly stabilized nature of the corresponding enolates, and is especially difficult for sterically demanding aryl partners. As a general solution to this problem, we r... Read More about Bismuth-Mediated α-Arylation of Acidic Diketones with ortho-Substituted Boronic Acids.

A Coordination Network Featuring Two Distinct Copper(II) Coordination Environments for Highly Selective Acetylene Adsorption (2022)
Journal Article
Chong, M. W., Argent, S. P., Moreau, F., Trenholme, W. J. F., Morris, C. G., Lewis, W., Easun, T. L., & Schröder, M. (2022). A Coordination Network Featuring Two Distinct Copper(II) Coordination Environments for Highly Selective Acetylene Adsorption. Chemistry - A European Journal, https://doi.org/10.1002/chem.202201188

Single crystals of 2D coordination network {Cu2L2 ⋅ (DMF)3(H2O)3}n (1-DMF) were prepared by reaction of commercial reagents 3-formyl-4-hydroxybenzoic acid (H2L) and Cu(NO3)2 in dimethylformamide (DMF). The single-crystal structure shows two distinct... Read More about A Coordination Network Featuring Two Distinct Copper(II) Coordination Environments for Highly Selective Acetylene Adsorption.

Synthesis of New Morphinan Opioids by TBADT‐Catalyzed Photochemical Functionalization at the Carbon Skeleton (2022)
Journal Article
Gorbachev, D., Smith, E., Argent, S. P., Newton, G. N., & Lam, H. W. (2022). Synthesis of New Morphinan Opioids by TBADT‐Catalyzed Photochemical Functionalization at the Carbon Skeleton. Chemistry - A European Journal, 28(50), Article e202201478. https://doi.org/10.1002/chem.202201478

The synthesis of new morphinan opioids by the addition of photochemically generated carbon-centered radicals to substrates containing an enone in the morphinan C-ring, is described. Using tetrabutylammonium decatungstate (TBADT) as a hydrogen atom tr... Read More about Synthesis of New Morphinan Opioids by TBADT‐Catalyzed Photochemical Functionalization at the Carbon Skeleton.

Structural and Electronic Studies of Substituted m-Terphenyl Group 12 Complexes (2022)
Journal Article
Valentine, A. J., Taylor, L. J., Geer, A. M., Huke, C. D., Wood, K. E., Tovey, W., Lewis, W., Argent, S. P., Teale, A. M., Mcmaster, J., & Kays, D. L. (2022). Structural and Electronic Studies of Substituted m-Terphenyl Group 12 Complexes. Organometallics, 41(11), 1426-1433. https://doi.org/10.1021/acs.organomet.2c00156

The effects of para-substitution on the structural and electronic properties of four series of two-coordinate m-terphenyl Group 12 complexes (R-Ar#)2M (M = Zn, Cd, Hg; R = t-Bu 1-3, SiMe34-6, Cl 7-9, CF310-12, where R-Ar#= 2,6-{2,6-Xyl}2-4-R-C6H2and... Read More about Structural and Electronic Studies of Substituted m-Terphenyl Group 12 Complexes.

Calcium coordination compounds of anionic forms of hydrogen dipicolinate and quinolinate: synthesis, characterization, crystal structures and DFT studies (2022)
Journal Article
Tella, A. C., Oladipo, A. C., Olayemi, V. T., Gordon, A., Ogunlaja, A. S., Alimi, L. O., Argent, S. P., Mokaya, R., Clarkson, G. J., & Walton, R. I. (2022). Calcium coordination compounds of anionic forms of hydrogen dipicolinate and quinolinate: synthesis, characterization, crystal structures and DFT studies. Structural Chemistry, https://doi.org/10.1007/s11224-022-01935-x

Two calcium coordination compounds [Ca(2,6-Hpdc)2(H2O)2] 1 and [Ca2(2,3-pdc)2(H2O)6]n2 (where 2,6-H2pdc = 2,6-pyridinedicarboxylic acid and 2,3-H2pdc = 2,3-pyridinedicarboxylic acid) were grown at room temperature. The compounds were characterized us... Read More about Calcium coordination compounds of anionic forms of hydrogen dipicolinate and quinolinate: synthesis, characterization, crystal structures and DFT studies.

Gold(I)-Catalyzed Nucleophilic Allylation of Azinium Ions with Allylboronates (2022)
Journal Article
O'Brien, L., Argent, S. P., Ermanis, K., & Lam, H. W. (2022). Gold(I)-Catalyzed Nucleophilic Allylation of Azinium Ions with Allylboronates. Angewandte Chemie International Edition, 61(22), Article e202202305. https://doi.org/10.1002/anie.202202305

Gold(I)-catalyzed nucleophilic allylations of pyridinium and quinolinium ions with allylboronates are reported. Transmetalation of the allylboronate with gold produces nucleophilic allylgold(I) species that add to the 4-position of the azinium ion wi... Read More about Gold(I)-Catalyzed Nucleophilic Allylation of Azinium Ions with Allylboronates.

A Mixed‐Addenda Mo/W Organofunctionalised Hybrid Polyoxometalate (2022)
Journal Article
Amin, S. S., Cameron, J. M., Winslow, M., Davies, E. S., Argent, S. P., Robinson, D., & Newton, G. N. (2022). A Mixed‐Addenda Mo/W Organofunctionalised Hybrid Polyoxometalate. European Journal of Inorganic Chemistry, 2022(10), Article e202200019. https://doi.org/10.1002/ejic.202200019

Substitution of metal addenda was explored as a method to modulate the electronic structure of organofunctionalised hybrid polyoxometalate clusters. Here we study the effects of Mo substitution into a W-based cluster. Through a range of spectroscopic... Read More about A Mixed‐Addenda Mo/W Organofunctionalised Hybrid Polyoxometalate.

Selective photoinduced charge separation in perylenediimide-pillar[5]arene rotaxanes (2022)
Journal Article
Pearce, N., Reynolds, K. E. A., Kayal, S., Sun, X. Z., Davies, E. S., Malagreca, F., Schürmann, C. J., Ito, S., Yamano, A., Argent, S. P., George, M. W., & Champness, N. R. (2022). Selective photoinduced charge separation in perylenediimide-pillar[5]arene rotaxanes. Nature Communications, 13(1), Article 415. https://doi.org/10.1038/s41467-022-28022-3

The ability to control photoinduced charge transfer within molecules represents a major challenge requiring precise control of the relative positioning and orientation of donor and acceptor groups. Here we show that such photoinduced charge transfer... Read More about Selective photoinduced charge separation in perylenediimide-pillar[5]arene rotaxanes.

Catalyst-free Hydrophosphinylation of Isocyanates and Isothiocyanates under Low-Added-Solvent Conditions (2021)
Journal Article
Huke, C. D., Taylor, L. J., Argent, S. P., & Kays, D. L. (2021). Catalyst-free Hydrophosphinylation of Isocyanates and Isothiocyanates under Low-Added-Solvent Conditions. ACS Sustainable Chemistry and Engineering, 9(32), 10704-10709. https://doi.org/10.1021/acssuschemeng.1c02907

A catalyst-free, low-solvent method for the hydrophosphinylation of isocyanates and isothiocyanates is reported. A range of phosphorus nucleophiles including secondary phosphine oxides HP(O)R2 (R = Ph, iPr), phosphites HP(O)(OR)2 (R = Me, Et), and me... Read More about Catalyst-free Hydrophosphinylation of Isocyanates and Isothiocyanates under Low-Added-Solvent Conditions.

Group 11 m-Terphenyl Complexes Featuring Metallophilic Interactions (2021)
Journal Article
Liu, Y., Taylor, L. J., Argent, S. P., McMaster, J., & Kays, D. L. (2021). Group 11 m-Terphenyl Complexes Featuring Metallophilic Interactions. Inorganic Chemistry, 60(14), 10114-10123. https://doi.org/10.1021/acs.inorgchem.0c03623

A series of group 11 m-terphenyl complexes have been synthesized via a metathesis reaction from the iron(II) complexes (2,6-Mes2C6H3)2Fe and (2,6-Xyl2C6H3)2Fe (Mes = 2,4,6-Me3C6H2; Xyl = 2,6-Me2C6H3). [2,6-Mes2C6H3M]2 (1, M = Cu; 2, M = Ag; 6, M = Au... Read More about Group 11 m-Terphenyl Complexes Featuring Metallophilic Interactions.

Multigram Synthesis of Trioxanes Enabled by a Supercritical CO2 Integrated Flow Process (2021)
Journal Article
Wu, L., Abreu, B. L., Blake, A. J., Taylor, L. J., Lewis, W., Argent, S. P., Poliakoff, M., Boufroura, H., & George, M. W. (2021). Multigram Synthesis of Trioxanes Enabled by a Supercritical CO2 Integrated Flow Process. Organic Process Research and Development, 25(8), 1873-1881. https://doi.org/10.1021/acs.oprd.1c00111

Photochemical synthesis of highly reactive hydroperoxides and their conversion into useful products, such as 1,2,4-trioxanes, are of wide interest for synthetic organic chemistry and pharmaceutical manufacturing particularly because of their relevanc... Read More about Multigram Synthesis of Trioxanes Enabled by a Supercritical CO2 Integrated Flow Process.

A Co-Crystallised Cobalt(II) Cluster of Pyridinedicarboxylic Acid (PDC) as a Luminescent Material for Selective Sensing of Methanol (2021)
Journal Article
Olayemi, V. T., Tella, A. C., Adekola, F. A., Clayton, H. S., Oladipo, A. C., Mehlana, G., Ogunlaja, A. S., Oluwafemi, O. S., Ogar, J. O., Argent, S. P., & Mokaya, R. (2021). A Co-Crystallised Cobalt(II) Cluster of Pyridinedicarboxylic Acid (PDC) as a Luminescent Material for Selective Sensing of Methanol. Journal of Fluorescence, 31(4), 1177-1190. https://doi.org/10.1007/s10895-021-02746-9

A luminescent Cobalt(II) co-crystal [Co13(PDC)16(H2O)24.7H2O] 1 (where H2PDC = 2,6-pyridinedicarboxylic acid) have been prepared by oven-heating and slow evaporation of solvent. Single crystal X-ray diffraction (SCXRD) analysis revealed that 1 is a m... Read More about A Co-Crystallised Cobalt(II) Cluster of Pyridinedicarboxylic Acid (PDC) as a Luminescent Material for Selective Sensing of Methanol.

Enantioselective nickel-catalyzed anti-arylmetallative cyclizations onto acyclic electron-deficient alkenes (2021)
Journal Article
Gillbard, S. M., Green, H., Argent, S. P., & Lam, H. W. (2021). Enantioselective nickel-catalyzed anti-arylmetallative cyclizations onto acyclic electron-deficient alkenes. Chemical Communications, 57(36), 4436-4439. https://doi.org/10.1039/d1cc01166a

Enantioselective nickel-catalyzed reactions of (hetero)arylboronic acids or alkenylboronic acids with substrates containing an alkyne tethered to various acyclic electron-deficient alkenes are described.

Enantioselective Nickel‐Catalyzed anti ‐Arylmetallative Cyclizations onto Acyclic Ketones (2021)
Journal Article
Green, H., Argent, S., & Lam, H. (2021). Enantioselective Nickel‐Catalyzed anti ‐Arylmetallative Cyclizations onto Acyclic Ketones. Chemistry - A European Journal, 27(19), 5897-5900. https://doi.org/10.1002/chem.202100143

Domino reactions involving nickel‐catalyzed additions of (hetero)arylboronic acids to alkynes, followed by cyclization of the alkenylnickel intermediates onto tethered acyclic ketones to give chiral tertiary‐alcohol‐containing products in high enanti... Read More about Enantioselective Nickel‐Catalyzed anti ‐Arylmetallative Cyclizations onto Acyclic Ketones.