Article
Chemistry, Multidisciplinary
Pablo Rios, Matthew S. See, Rex C. Handford, Simon J. Teat, T. Don Tilley
Summary: Stable dicopper(I) boryl complexes have been isolated using a robust dinucleating ligand DPFN and have shown reactivity in catalytic C-H bond activation.
Article
Chemistry, Organic
Samantha L. Gargaro, Raphael K. Klake, Joshua D. Sieber
Summary: Here, we describe the development of a Cu-catalyzed enantioselective borylative aminoallylation reaction using a N-substituted alleneto access boryl-substituted 1,2-aminoalcohol synthons for generating chiral heteroatom-rich organic compounds. The reaction provides easy access to various substitution patterns of chiral 1,2-aminoalcohol products with high diastereo- and enantioselectivity from readily available starting materials.
Article
Chemistry, Inorganic & Nuclear
Wiebke Drescher, Christian Kleeberg
Summary: The oxidative addition of diborane(4) derivatives to [Rh(PMe3)3Cl] was studied, and the resulting octahedral bis-boryl complexes were obtained. The properties of the boryl ligands played a crucial role in the structural and spectroscopic properties of the complexes.
DALTON TRANSACTIONS
(2022)
Article
Chemistry, Multidisciplinary
Emily E. Nahon, Gareth R. Nelmes, Penelope J. Brothers, Jamie Hicks
Summary: A bulky boron bromide was synthesized using a flexible diamido framework and used as a precursor for a boryl anion. The compound showed different reactivity when reacted with lithium metal or an anionic iron carbonyl salt, resulting in C-N bond activation, migration of an aryl group, and cooperative activation of a carbonyl group.
CHEMICAL COMMUNICATIONS
(2023)
Article
Chemistry, Organic
Stephane Golling, Frederic R. Leroux, Morgan Donnard
Summary: This study presents a novel regio- and stereoselective silylformylation reaction of ynamides, demonstrating good tolerance to functional groups. Substitution of CO by an isocyanide enhances the safety and practicality of this reaction, providing a rapid access to various tetrasubstituted 3-silyl-2-amidoacrolein derivatives. The synthetic potential of these new building blocks has been evaluated through postfunctionalization.
Article
Chemistry, Organic
Shabbir Ahmed Khan, A. Sanjeeva Kumar, K. C. Kumara Swamy
Summary: DBU-catalyzed spiro-annulation and ring expansion/dominoreaction of delta-acetoxy allenoates with cycl-2-ene-N-sulfonyl hydrazides led to ring-expanded products. On the other hand, cycl-3-ene/ane-N-sulfonyl hydrazones under similar conditions gave pyrazolecores. The key intermediates of spirocyclic and dienyl-amine were isolated and characterized. An extension to (R)-(-)-carvone-derived sulfonyl hydrazide also resulted in ring expansion and formation of pyrazoloazepine.
Article
Chemistry, Inorganic & Nuclear
Andrey V. Protchenko, M. Angeles Fuentes, Jamie Hicks, Caitilin McManus, Remi Tirfoin, Simon Aldridge
Summary: The reaction of boryl-substituted stannylene with carbon dioxide proceeds via pathways involving insertion into the Sn-B bonds. Several different products can be derived from this reaction, including boryl(borylcarboxylate)ester and bis(borylcarboxylate) stannylene complexes. The possibility of extrusion of CO from the reaction products to generate boryloxy systems has also been observed.
DALTON TRANSACTIONS
(2021)
Article
Chemistry, Multidisciplinary
Greg J. Baker, Andrew J. P. White, Ian J. Casely, Damian Grainger, Mark R. Crimmin
Summary: The reversible activation of dihydrogen with a molecular zinc anilide complex has been investigated. The mechanism involves the addition of H-2 across the Zn-N bond through a four-membered transition state. The resulting zinc hydride complex is highly effective for the hydrozincation of C=C bonds, particularly alkynes, and this discovery has led to the development of a catalytic system for the semi-hydrogenation of alkynes.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2023)
Article
Chemistry, Organic
Antony Sekar Kulandai Raj, Akshay Subhash Narode, Rai-Shung Liu
Summary: This work describes novel gold-catalyzed reactions in which vinyldiazo ketones react with N-(o-alkynylphenyl)imines to yield new indole derivatives, specifically 3-(furan-2-ylmethyl)-1H-indoles, through skeletal rearrangement. The reactions are applicable to a wide range of substrates, and a new mechanism involving the addition of diazo ketones to azomethine ylide intermediates is proposed, resulting in the formation of gold-containing N-alkylated indole intermediates that undergo proton-induced 1,3-group migrations.
Article
Chemistry, Multidisciplinary
Anuja Sharma, Sangho So, Jun-Hyeong Kim, Samantha N. MacMillan, Mu-Hyun Baik, Ryan J. Trovitch
Summary: This study describes the discovery and utilization of a new cobalt catalyst that exhibits the highest reported turnover frequencies for metal-catalyzed carbonyl hydrosilylation.
CHEMICAL COMMUNICATIONS
(2022)
Article
Chemistry, Inorganic & Nuclear
Anna M. Szczepkowska, Mateusz Janeta, Milosz Siczek, Wlodzimierz Tylus, Anna M. Trzeciak, Wojciech Bury
Summary: Two model porphyrin metal-organic frameworks were utilized for the incorporation of Rh(I) species through post-synthetic metallation, resulting in the synthesis and structural characterization of new rhodium MOFs (Rh/MOFs), Rh/PCN-222 and Rh/NU-1102. These Rh/MOFs were demonstrated to be active heterogeneous catalysts for the hydrogenation of unsaturated hydrocarbons at mild reaction conditions, with an activation step required during the initial run of the catalytic process. In situ Diffuse Reflectance Infrared Fourier Transform Spectroscopy (DRIFTS) was utilized to monitor the activation pathway of the catalyst under a H-2 atmosphere.
DALTON TRANSACTIONS
(2021)
Article
Immunology
Marcus Fabiano de Almeida Mendes, Marcelo de Souza Bragatte, Priscila Vianna, Martiela Vaz de Freitas, Ina Poehner, Stefan Richter, Rebecca C. Wade, Francisco Mauro Salzano, Gustavo Fioravanti Vieira
Summary: This study introduces a new bioinformatics tool, MatchTope, for predicting peptide similarity and triggering cross-reactivity by analyzing the electrostatic potentials of MHC complexes. The results demonstrate the potential value of MatchTope in future research in vaccinology and cancer immunotherapy.
FRONTIERS IN IMMUNOLOGY
(2022)
Article
Chemistry, Multidisciplinary
Sebastian Martinez-Vivas, Dmitry G. Gusev, Macarena Poyatos, Eduardo Peris
Summary: We report a rhodium(I) complex with modulable electronic nature through supramolecular and redox stimuli. The complex shows strong pi-pi-stacking interaction with coronene, affecting its electron-richness. Addition of tetrabutylammonium fluoride sequentially reduces the ligand's NDI moiety, enhancing its electron-donor strength. The complex's catalytic activity in the cycloisomerization of alkynoic acids can be modulated by the addition of fluoride, resulting in four levels of activity.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Chemistry, Multidisciplinary
Jimei Zhou, Minxian Jia, Menghui Song, Zhiliang Huang, Alexander Steiner, Qidong An, Jianwei Ma, Zhiyin Guo, Qianqian Zhang, Huaming Sun, Craig Robertson, John Bacsa, Jianliang Xiao, Chaoqun Li
Summary: This study reports a new non-heme Mn catalyst that enables the benzylic oxidation reactions under mild conditions. The catalyst shows high activity and excellent selectivity, allowing for the oxidation of a wide range of functional groups. This method provides a cost-effective, sustainable, and robust pathway for the synthesis of ketones, increasing the complexity of organic molecules, and modifying drugs at a late stage.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
Article
Chemistry, Multidisciplinary
Maria Talavera, Thomas Braun
Summary: The hydrofluoroolefin Z-1,3,3,3-tetrafluoropropene undergoes activation through various pathways in the presence of Rh catalysts, leading to different coordination compounds. One unique reaction involves the fluorido vinylidene complex converting to a new compound through dehydrofluorination reaction.
Article
Chemistry, Inorganic & Nuclear
Vaibhav Bedi, Dipendu Mandal, Zahid Hussain, Shi-Ming Chen, Yile Wu, Zheng-Wang Qu, Stefan Grimme, Douglas W. Stephan
Summary: The reaction of (tBuO(2)CN)(2) with 9-BBN leads to the formation of a bicyclic heterocyclic compound, while its reactions with BF3 or [Et3Si][B(C6F5)(4)] result in the isolation of different compounds. Computational studies reveal that the steric and electronic properties of the Lewis acid are important in the formation of one of the compounds.
DALTON TRANSACTIONS
(2024)
Article
Chemistry, Inorganic & Nuclear
Chisa Itoh, Haruka Yoshino, Taku Kitayama, Wataru Kosaka, Hitoshi Miyasaka
Summary: A new synthetic route for constructing functional paddlewheel diruthenium(II,II) complexes was developed, utilizing Schiff base condensation reactions. The attached Schiff base groups significantly affected the electronic states of the resulting complexes, as revealed by cyclic voltammetry and DFT calculations.
DALTON TRANSACTIONS
(2024)
Article
Chemistry, Inorganic & Nuclear
Danrui Ni, Haozhe Wang, Xianghan Xu, Weiwei Xie, Robert J. Cava
Summary: A layered rhombohedral polymorph of indium(iii) triiodide is synthesized at high pressure and temperature. It has an orange color, which is different from ambient pressure InI3, which has a monoclinic molecular structure and a light-yellow color.
DALTON TRANSACTIONS
(2024)
Review
Chemistry, Inorganic & Nuclear
Juan Carlos Perez-Sanchez, Raquel P. Herrera, M. Concepcion Gimeno
Summary: Gold(II) complexes have been less utilized in catalysis compared to their gold(I) and gold(III) counterparts. However, gold(II) complexes offer potential in homo-coupling and cross-coupling reactions, as they are more easily accessible through simplified oxidation and reduction processes. Gold(II) exhibits characteristics of both soft acid gold(I) and hard acid gold(III). This review explores the unique reactivity and potential applications of gold(II) species, highlighting their significance in catalytic transformations.
DALTON TRANSACTIONS
(2024)
Article
Chemistry, Inorganic & Nuclear
Nighat Yousuf, Yanping Ma, Qaiser Mahmood, Wenjuan Zhang, Yizhou Wang, Hassan Saeed, Wen-Hua Sun
Summary: In this study, a series of structurally rigid cyclooctyl-fused iminopyridine iron complexes were synthesized and used with methylaluminoxane for isoprene polymerization. The extent of steric hindrance of the ligand framework was found to significantly affect catalytic performance, with less hindrance leading to better activity and stability.
DALTON TRANSACTIONS
(2024)
Article
Chemistry, Inorganic & Nuclear
Chenghao Song, Huiwei Du, Menglei Xu, Jie Yang, Xinyu Zhang, Jungan Wang, Yuanfang Zhang, Chengjun Gu, Rui Li, Tao Hong, Jingji Zhang, Jiangying Wang, Yongchun Ye
Summary: This study improves the performance of perovskite solar cells by using a dual-hole transport layer strategy. This strategy enhances the charge transfer efficiency of the transport layer, reduces charge recombination, and improves the quality of the perovskite film layer. Ultimately, the stability of the device is enhanced.
DALTON TRANSACTIONS
(2024)
Article
Chemistry, Inorganic & Nuclear
Mahender Singh, Aakash Yadav, Ranjit Singh, Chullikkattil P. Pradeep
Summary: A new aryl selenonium polyoxometalate hybrid was developed and compared with an aryl sulfonium polyoxometalate hybrid in terms of their photocatalytic properties. It was found that the aryl selenonium hybrid exhibited better catalytic performance, which could be attributed to the larger atomic radii of selenium stabilizing the photogenerated electron-hole pair more efficiently. Additionally, the generation of elemental selenium through cleavage of C-Se bonds during catalysis was observed.
DALTON TRANSACTIONS
(2024)
Article
Chemistry, Inorganic & Nuclear
Yuhan Xie, Boyu Dong, Xuemin Wang, Siyuan Wang, Jinxi Chen, Yongbing Lou
Summary: This study successfully fabricated visible-light-responsive three-dimensional core-shell CoSe2/ZnIn2S4 heterostructures and achieved attractive activity in photocatalytic hydrogen evolution. The presence of CoSe2 improved light absorption and accelerated charge transfer kinetics. The strong interaction between CoSe2 and ZnIn2S4 reduced charge recombination, further enhancing photocatalytic activity for hydrogen evolution.
DALTON TRANSACTIONS
(2024)
Article
Chemistry, Inorganic & Nuclear
Andre L. de O. Batista, Joao Marcos T. Palheta, Mauricio J. Piotrowski, Celso R. C. Rego, Diego Guedes-Sobrinho, Alexandre C. Dias
Summary: This study presents a simulation protocol that provides a solid foundation for exploring two-dimensional materials. Using the TiBr2 2H monolayer as an example, the study reveals its promising properties for optoelectronic and valleytronic applications, including its stability, spin-orbit coupling effects, and optical helicity selection rule.
DALTON TRANSACTIONS
(2024)
Article
Chemistry, Inorganic & Nuclear
Jiang Jiang, Zi-Wei Li, Zhi-Zhuan Zhang, Bin Tan, Zhao-Feng Wu, Xiao-Ying Huang
Summary: In this work, two metal organic frameworks (MOFs) containing {Cu2I2} clusters, Eu-CuI-INA and Sr-K-CuI-INA, were synthesized and characterized. Both materials have a three-dimensional structure with {Cu2I2} clusters coordinated by INA(-) ligands and Eu3+ or Sr2+ ions. The Sr-K-CuI-INA material exhibited sensitive fluorescence sensing behaviors towards cysteine and nitro-bearing molecules, showing potential applications in bio and explosive molecule sensing. This work provides a good reference for designing fluorescent MOF probes containing CuI molecules.
DALTON TRANSACTIONS
(2024)
Article
Chemistry, Inorganic & Nuclear
Zhiya Lin, Jiasheng Wu, Qianwen Ye, Yulong Chen, Hai Jia, Xiaohui Huang, Shaoming Ying
Summary: Na-ion batteries (NIBs) have attracted great interest as a potential technology for grid-scale energy storage due to the wide distribution, low cost, and environmental friendliness of sodium resources. However, their implementation is hindered by low rate capability and cycling stability caused by the large ionic size of Na+. In this study, a three-dimensional nanoarchitectured coral-like CoSe2@N-doped carbon (CL-CoSe2@NC) was synthesized, and it exhibited improved sodium storage properties with better electrode kinetics and a stable SEI film.
DALTON TRANSACTIONS
(2024)
Article
Chemistry, Inorganic & Nuclear
Ya-Qiong Zhang, Yu Zhang, Guoping Zeng, Rong-Zhen Liao, Man Li
Summary: The mechanism and selectivity of CO2 reduction under visible light were investigated using density functional calculations. The results showed that a tetradentate PNNP-type Iridium(III) complex exhibited high activity and selectivity in the reaction.
DALTON TRANSACTIONS
(2024)
Article
Chemistry, Inorganic & Nuclear
Sanyukta Ghosh, Shubhanth Jain, Soumya Ranjan Mishra, Gerda Rogl, Peter Rogl, Ernst Bauer, B. S. Murty, A. Govindaraj, Ramesh Chandra Mallik
Summary: In this study, reduced graphene oxide (rGO) was uniformly dispersed in the In0.5Co4Sb12 bulk material by ultrasonication, which effectively reduced the lattice thermal conductivity and improved the thermoelectric efficiency.
DALTON TRANSACTIONS
(2024)
Article
Chemistry, Inorganic & Nuclear
Mika Takeuchi, Yutaka Amao
Summary: This study developed an effective visible-light driven system for fumaric acid production using renewable resources such as biomass derivatives, providing an alternative to the current petroleum-based synthesis methods.
DALTON TRANSACTIONS
(2024)
Article
Chemistry, Inorganic & Nuclear
Juan Jian, Meiting Wang, Zhuo Wang, Jingwen Meng, Yuqin Yang, Limin Chang
Summary: Developing low-cost and self-supported bifunctional catalysts is crucial for highly efficient water splitting devices. In this study, nano-NiFe2O4 was directly grown onto iron foil surface and Sn4+ was introduced into the NiFe2O4. The resulting Sn-NiFe2O4/IF showed low overpotentials and high current densities during oxygen evolution reaction (OER) and hydrogen evolution reaction (HER), making it a promising catalyst for large-scale hydrogen production.
DALTON TRANSACTIONS
(2024)