Article
Chemistry, Organic
Jing-Jing Ai, Bei-Bei Liu, Jian Li, Fei Wang, Cheng-Mi Huang, Weidong Rao, Shun-Yi Wang
Summary: An iron-sulfur complex formed by mixing FeCl3 with S-3(center dot-) from K2S is developed for selective aerobic oxidation of terminal alkenes. The reaction can be carried out under an atmosphere of O-2, and can proceed on a gram scale, expanding the application of S-3(center dot-) in organic synthesis. This study also encourages further exploration of the application of Fe-S catalysts in organic reactions.
Article
Chemistry, Multidisciplinary
Heike Kuhn, Andrew Docker, Paul D. Beer
Summary: The synthesis and characterization of acyclic antimony(III) and bismuth(III) triaryl pnictogen bonding receptors were reported. The binding potency of halide anions was found to be closely related to the electronic properties of the aryl substituent and the polarisability of the pnictogen bonding donor. Selectivity profiles for chloride anions and oxoanions were revealed for the most potent receptors.
CHEMISTRY-A EUROPEAN JOURNAL
(2022)
Article
Chemistry, Organic
Zhegao Ye, Ziran Lei, Xiaodong Ye, Liejin Zhou, Yanan Wang, Zheliang Yuan, Feng Gao, Robert Britton
Summary: A mild and general method for trifluoromethylthiolation of aldehydes using N-trifluoromethylthiosaccharin and sodium decatungstate as the photocatalyst has been reported. Electron-rich aldehydes show better reactivity, while good selectivity is observed for the trifluoromethylthiolation of aldehydic C-H bonds. Preliminary mechanistic studies suggest a free radical process is involved.
JOURNAL OF ORGANIC CHEMISTRY
(2022)
Review
Chemistry, Inorganic & Nuclear
Bindusagar Das, Abhishek Makol, Subrata Kundu
Summary: The synthesis and characterization of isolable radicals of main-group elements have been a long-pursued quest. Considerable progress has been made in isolating carbon radicals, but much less is known about radicals involving heavier p-block elements. This review focuses on the synthesis and properties of isolable phosphorus-centered radicals.
DALTON TRANSACTIONS
(2022)
Article
Chemistry, Multidisciplinary
Michelle B. Mills, Carolyn A. Michalowicz, Ellen Song, Adam C. Maahs, Julia A. Newman, Taylr Cawte, Jessica M. Lovnicki, Dmitriy Soldatov, Kathryn E. Preuss
Summary: A novel ligand with a square-shaped tetradentate binding site, preorganized via a supramolecular unit composed of two pi-radicals, is reported for coordination to early lanthanide ions. The structural comparison of the free ligand and the coordination complexes suggests favorable preorganization of the ligand upon coordination. Unlike most DTDA-based ligands, the pancake-bonded bitaDTDA unit remains intact upon coordination to early lanthanide ions.
CRYSTAL GROWTH & DESIGN
(2021)
Article
Chemistry, Organic
Shuai Liu, Nivesh Kumar, Frederic Robert, Yannick Landais
Summary: A visible-light-mediated intramolecular site-selective delta-C(sp3)-H bond arylation of aliphatic trifluoromethanesulfonamides was developed. The reaction proceeds through a radical cascade, involving the generation of a sulfonamidyl radical, 1,5-hydrogen atom transfer, formation of a delta-C-centered radical, and finally cyclization onto a neighboring thiopolyfluoroaryl moiety to provide thiochromanes. The cyclization process occurs via two distinct pathways depending on the substituent X ortho to the native C-S bond.
Article
Medicine, Research & Experimental
Yilue Zhang, David S. Richards, Elizabeth N. Grotemeyer, Timothy A. Jackson, Christian Schoneich
Summary: Citrate is a commonly used buffer that can form complexes with metals like Fe3+. These complexes have been found to generate carbon dioxide radical anion (center dot CO2-) under light exposure. In this study, spin trapping and mass spectrometry were used to investigate the mechanism of center dot CO2- formation from Fe3+-citrate complexes.
MOLECULAR PHARMACEUTICS
(2022)
Article
Chemistry, Multidisciplinary
Wenqiang Ma, Sikun Zhang, Liang Xu, Bingjie Zhang, Guoping Li, Bin Rao, Mingming Zhang, Gang He
Summary: Two pyrene-tethered bismoviologen derivatives (Py-BiV2+) were synthesized and used as photosensitizers for visible-light-induced C-P bond formation. These derivatives exhibited fine-tunable opto-electronic properties and showed good catalytic performance for both C(sp3)-P and C(sp2)-P bond formation reactions.
CHINESE CHEMICAL LETTERS
(2023)
Article
Chemistry, Inorganic & Nuclear
Bapan Samanta, Riya Ghosh, Rakesh Mazumdar, Shankhadeep Saha, Sayani Maity, Biplab Mondal
Summary: Researchers synthesized a Co(II) complex with a bidentate ligand and observed the corresponding transient intermediate through experiments. This study is important for understanding the reaction mechanism of the complex.
DALTON TRANSACTIONS
(2023)
Letter
Materials Science, Multidisciplinary
Bungo Ochiai, Kohei Kikuta, Yoshimasa Matsumura, Hiroshi Horikoshi, Kikuo Furukawa, Miyuki Miyamoto, Yoshio Nishimura
Summary: Transparent, photochromic, and X-ray shielding polymer films were prepared by bulk radical copolymerization of bismuth(III) methacrylate and N,N-dimethylacrylamide. The refractive indices and X-ray shielding abilities increased with the bismuth content. Photochromism occurred through reversible redox reactions between the bismuth carboxylate structure and Bi(0), with the advantage of a simple preparation procedure using inexpensive substances over previously reported bismuth-containing polymers.
ACS APPLIED POLYMER MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
Adam J. Rieth, Miguel Gonzalez, Bryan Kudisch, Matthew Nava, Daniel G. Nocera
Summary: The study identified the emissive excited state of the Meisenheimer complex of naphthalene monoimide as a potent reductant with long lifetime and light emission characteristics, which can drive radical photochemistry. This provides a mechanistic basis for photoreactivity at highly reducing potentials and lays out a clear path for the development of exceptionally reducing photoreagents derived from electron-rich closed-shell anions.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2021)
Article
Engineering, Environmental
Jiong Gao, Roberta Frinhani Nunes, Kevin O'Shea, Greg L. Saylor, Lingjun Bu, Yu-Gyeong Kang, Xiaodi Duan, Dionysios D. Dionysiou, Shenglian Luo
Summary: This study investigates the impact of water quality parameters on the formation of radical anions and BPA degradation in UV/SPC and UV/H2O2 systems. The rise in pH decreases the steady state concentration of HO•, resulting in a decrease in BPA degradation rate.
Article
Chemistry, Multidisciplinary
Haoyuan Li, Sen Li, Huimin Hu, Runbo Sun, Meixia Liu, Anjun Ding, Xiaoyong Liu, Wenlin Luo, Zhengjiang Fu, Shengmei Guo, Hu Cai
Summary: A visible-light-induced radical/radical cross-coupling reaction of quaternary ammonium salts and Hantzschs via C-N and C-C bond cleavage is reported, leading to the formation of 1,2-diphenylethanes. The synthetic approach provides a moderate to good yield and offers a method for constructing C(sp(3))-C(sp(3)) bonds.
CHEMICAL COMMUNICATIONS
(2023)
Article
Chemistry, Inorganic & Nuclear
Kazuyoshi Takimoto, Yutaka Watanabe, Jun Yoshida, Hisako Sato
Summary: The freshly prepared iridium complex 1 has a five-coordinate geometry, showing stable enantiomers Delta and Lambda in chloroform.
DALTON TRANSACTIONS
(2021)
Article
Electrochemistry
Charles L. Brito, Renato S. O. Lins, Mauro Bertotti, Elizabeth Ferreira, Mauro A. La-Scalea
Summary: The reduction behavior of nimorazole (NMZ) was investigated using cyclic voltammetry in different pH conditions. The results showed that in acidic medium, an irreversible cathodic process involving four electrons occurred, leading to the formation of hydroxylamine derivative. In alkaline medium, the reduction process occurred in two steps, with the formation of nitro-anion radical in a reversible one-electron process followed by the formation of hydroxylamine derivative. It was also observed that the nitro-anion radical could generate superoxide anion through a futile cycle with molecular oxygen.
ELECTROCHIMICA ACTA
(2022)
Article
Chemistry, Inorganic & Nuclear
Ryan J. Schwamm, Clara A. von Randow, Ahmed Mouchfiq, Matthew J. Evans, Martyn P. Coles, J. Robin Fulton
Summary: The study describes the synthesis and structural characterization of a series of Ge, Sn, and Pb compounds with different substituents, where the Ge complexes are monomeric, the Sn complexes are dimeric, and the Pb complexes exist as both monomers and dimers. Solution phase NMR spectroscopic data indicate that all compounds are monomeric in solution. Structural parameters, including buried volume (%V-bur), are discussed.
EUROPEAN JOURNAL OF INORGANIC CHEMISTRY
(2021)
Article
Chemistry, Multidisciplinary
Matthew J. Evans, Samuel E. Neale, Mathew D. Anker, Claire L. McMullin, Martyn P. Coles
Summary: The potassium aluminyl [K{Al(NONDipp)}](2) effectively activates ethene towards carbonylation with CO under mild conditions. The study also identified important intermediates in the reaction pathway and confirmed the stabilizing influence of incorporated benzene through computational methods.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
Article
Chemistry, Multidisciplinary
Thomas X. Gentner, Matthew J. Evans, Alan R. Kennedy, Sam E. Neale, Claire L. McMullin, Martyn P. Coles, Robert E. Mulvey
Summary: This study reports the rubidium and caesium aluminyls, completing the set of metal aluminyls in group 1 (Li-Cs) and expanding knowledge of low valent aluminium chemistry. The compounds form contacted dimeric pairs supported by pi(arene) interactions and exhibit a pronounced twist between aluminyl units. Interestingly, the Cs aluminyl enables C-H bond activation of benzene, while the Rb aluminyl does not, highlighting the significance of alkali metal in these heterobimetallic systems.
CHEMICAL COMMUNICATIONS
(2022)
Article
Chemistry, Inorganic & Nuclear
Matthew J. Evans, Mathew D. Anker, Michael G. Gardiner, Claire L. McMullin, Martyn P. Coles
Summary: This study successfully converts contacted dimeric pairs of aluminyl compounds to monomeric ion pairs and separated ion pairs by controlling the Al-M interaction with appropriate chelating reagents. The process was successful for group 1 metals Li, Na, and K, demonstrating the controllability of the interaction through the use of chelating reagents.
INORGANIC CHEMISTRY
(2021)
Article
Chemistry, Multidisciplinary
Kyle G. Pearce, Chiara Dinoi, Michael S. Hill, Mary F. Mahon, Laurent Maron, Ryan S. Schwamm, Andrew S. S. Wilson
Summary: The synthesis and catalytic properties of hydrocarbon-soluble beta-diketiminato phenylcalcium derivatives are discussed in this article. The compounds display different modes of Ca-mu(2)-Ph-Ca bridging and can selectively and uncatalyzedly form biaryls when reacted with aryl bromides.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
Article
Chemistry, Inorganic & Nuclear
Ryan J. Schwamm, Martyn P. Coles
Summary: The catalytic hydrophosphination reactivity of antimony phosphanides was evaluated. The results showed that the compound exhibited good catalytic activity in the hydrophosphination reaction of phenylisocyanate.
EUROPEAN JOURNAL OF INORGANIC CHEMISTRY
(2022)
Article
Materials Science, Multidisciplinary
T. Nawaz, G. V. M. Williams, M. P. Coles, A. Edgar, S. Chong
Summary: Oriented ferromagnetic Ni0.89Fe0.11 nanoparticle/polymer nanofibers were produced by electrospraying and thermal processing. After heat treatment, the fiber width decreased and a bimodal distribution of nanoparticle sizes was observed. There was a small spin-disordered shell and a high magnetization strength.
MATERIALS TODAY COMMUNICATIONS
(2022)
Article
Chemistry, Inorganic & Nuclear
Michael S. Hill, Mary F. Mahon, Claire L. McMullin, Samuel E. Neale, Kyle G. Pearce, Ryan J. Schwamm
Summary: Reactions of the potassium alumanyl derivative with white phosphorus provide controlled access to species containing the (P-4)(2-) dianion. Crystallographic characterization and computational analysis have been carried out on two examples.
ZEITSCHRIFT FUR ANORGANISCHE UND ALLGEMEINE CHEMIE
(2022)
Article
Chemistry, Inorganic & Nuclear
Ryan J. Schwamm, Alexander F. R. Kilpatrick, Martyn P. Coles
Summary: The reduction of Bi(III) and Bi(II) compounds supported by the NONR-ligand leads to the formation of species with different formal oxidation states for the metal. The study of these compounds provides important information for understanding the various oxidation states of bismuth.
ZEITSCHRIFT FUR ANORGANISCHE UND ALLGEMEINE CHEMIE
(2022)
Article
Chemistry, Inorganic & Nuclear
William R. Kerr, Marie A. Squire, Christopher M. Fitchett
Summary: In this study, enantiomerically pure chelating NHC-isobornylamide was synthesized and reacted with palladium and platinum salts. The results showed that the steric bulk of the chiral group played an important role in the interaction with the metal atom, and the complexes formed with acetylacetonate ligands exhibited E/Z isomerism.
JOURNAL OF ORGANOMETALLIC CHEMISTRY
(2022)
Article
Chemistry, Inorganic & Nuclear
Mathew D. Anker, Andrea O'Reilly, Claire L. McMullin, Martyn P. Coles
Summary: This study reports the formation of complexes containing In-Pn bonds by the reaction of potassium indyl with Pn (NONtBu)Cl (Pn = pnictide = Sb, Bi). X-ray crystallography and computational analysis confirm the properties and bonding mechanisms of these complexes.
Article
Chemistry, Multidisciplinary
Matthew J. Evans, Michael G. Gardiner, Mathew D. Anker, Martyn P. Coles
Summary: The study found that (NONDipp)Al-K(TMEDA)(2) and dimeric potassium aluminyl [K{Al(NONDipp)}](2) can activate and reductively couple carbon monoxide gas to form aluminium complexes with unique ligands.
CHEMICAL COMMUNICATIONS
(2022)
Article
Chemistry, Multidisciplinary
Matthew J. Evans, Mathew D. Anker, Claire L. McMullin, Samuel E. Neale, Nasir A. Rajabi, Martyn P. Coles
Summary: This study investigates a series of multiply-bonded main group metal compounds and their reactions with various substrates, revealing their reaction mechanisms and product structures.
Article
Chemistry, Multidisciplinary
Matthew J. Evans, Mathew D. Anker, Claire L. McMullin, Nasir A. Rajabi, Martyn P. Coles
Summary: This study reports a novel ligand containing a terminal aluminium telluride bond, with DFT calculations confirming significant metal-tellurium multiple bond character. The reaction with CO2 proceeds via a double insertion to form the previously unknown tellurodicarbonate ligand.
CHEMICAL COMMUNICATIONS
(2021)
