Article
Chemistry, Inorganic & Nuclear
Chen Sun, Victoria F. Oswald, Ethan A. Hill, Joseph W. Ziller, A. S. Borovik
Summary: The use of a tripodal ligand containing specific coordination groups allows for the synthesis of iron complexes, and examination of their structures and properties in the crystalline phase. Variations in the primary and secondary coordination spheres can impact the electrochemical properties of metal complexes, leading to different redox reactions.
DALTON TRANSACTIONS
(2021)
Article
Chemistry, Physical
Hong Chen, Zeming Wang, Minhao Li, Weiwei Zuo
Summary: Catalytic asymmetric transfer hydrogenation (ATH) reactions of ketones using structurally well-defined (R,R)-amido-ene(amido) nickel catalysts have been developed, allowing access to a wide range of secondary (S)-configuration alcohols with high enantiomeric excess (e.e.). The catalytic activity is attributed to the stabilization of the electron-rich nickel center with the ene(amido) group, while the stereoinduction mainly arises from a catalyst-substrate pi-pi interaction in the transition state for enantioselective hydride transfer.
Article
Chemistry, Multidisciplinary
Yongxian Li, Jia-Yi Chen, Qiyi Miao, Xin Yu, Lei Feng, Rong-Zhen Liao, Shengfa Ye, Chen-Ho Tung, Wenguang Wang
Summary: Parent amido complexes play a crucial role in ammonia-based transformations. The study introduces a well-defined ferric ammine system that efficiently catalyzes electrochemical ammonia oxidation. A formal Fe(IV)-amido species, along with its conjugated Lewis acid, is isolated and characterized for the first time. Mechanism studies reveal the formation of hydrazine through the non-innocent nature of the phenylamido ligand.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2022)
Article
Chemistry, Inorganic & Nuclear
Marina Uzelac, Kang Yuan, Gary S. Nichol, Michael J. Ingleson
Summary: Amido-zincates containing hydrides are a promising yet underexplored class of complexes. Synthesis attempts through Zn-C/H-BPin exchange resulted in preferential formation of amide-BPin or (amide-BPin(Y)](-) species, highlighting the need for further research on more selective zincate exchange reactions utilizing amido-organozincates.
DALTON TRANSACTIONS
(2021)
Article
Chemistry, Inorganic & Nuclear
Christian Ritter, Carsten Haenisch
Summary: Novel borane ligand complexes, including Mg and Ca complexes, as well as a series of bis(amido)diazadiarsetidine, were synthesized in this study. These newly synthesized compounds exhibited different transformation behaviors in hydrolysis reactions.
EUROPEAN JOURNAL OF INORGANIC CHEMISTRY
(2021)
Article
Chemistry, Multidisciplinary
Jian Liu, Melissa M. Bollmeyer, Yujeong Kim, Dengmengfei Xiao, Samantha N. MacMillan, Qi Chen, Xuebing Leng, Sun Hee Kim, Lili Zhao, Kyle M. Lancaster, Liang Deng
Summary: Mononuclear Pd(I) species are potential intermediates in Pd-catalyzed reactions, and a Pd(I) amido complex has been isolated and characterized in this study, revealing its electronic features and reactivity.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2021)
Article
Chemistry, Inorganic & Nuclear
Elizabeth A. Hamilton, Alexander F. R. Kilpatrick, Zoe R. Turner, Duncan A. X. Fraser, Jean-Charles Buffet, Dermot O'Hare
Summary: The synthesis and characterization of new permethylpentalene zirconium bis(amido) and permethylpentalene zirconium cyclopentadienyl mono(amido) complexes, as well as their reactivity with carbon dioxide, were reported in this study.
DALTON TRANSACTIONS
(2021)
Article
Chemistry, Physical
Chang Xu, Yichun Zhou, Jiuqi Yi, Dan Li, Lili Shi, Longjiu Cheng
Summary: Cluster assembling is a hot topic in nanochemistry. This study theoretically predicts stable ligand-protected tri- and tetra-superatomic clusters and a gold nanowire, which have similar geometric and electronic structures to simple molecules.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2022)
Article
Physics, Particles & Fields
C. Becchi
Summary: This paper focuses on the study of charm and bottom bound states suitable for a non-relativistic description. It investigates their production cross sections, total widths, and decay properties, using simple choices of quarkonia and tetra-quark wave functions. The results show compatibility with literature values for the production cross sections of the ground state scalar quarkonia. The study also calculates the production cross sections, decay widths, and decay rates of lower energy states of charm and bottom tetra-quarks. The findings are consistent with data published by the LHCb and CMS Collaborations. The analysis relies on interpolations based on gluon-gluon luminosity grids and tree-level amplitudes calculated using QCD. The authors suggest that further refinement of their method and future improvements in experimental data at the LHC will enable valuable tests of QCD.
EUROPEAN PHYSICAL JOURNAL C
(2022)
Article
Chemistry, Multidisciplinary
Jian Luo, Michael. T. T. Davenport, Chad Callister, Shelley. D. D. Minteer, Daniel. H. H. Ess, T. Leo Liu
Summary: In this study, the mechanism of Ni-catalyzed electrochemical aryl amination reactions was investigated through experiments and calculations. The results revealed that the coordination of an amine to the Ni-II catalyst, followed by the generation of a stable Ni-II aryl amido intermediate and reductive elimination, were key steps in the reaction. The findings provide new insights into the mechanism of this reaction and offer guidance for the development of other Ni-catalyzed electrosynthetic reactions.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2023)
Article
Multidisciplinary Sciences
Louis Ponet, S. Artyukhin, Th. Kain, J. Wettstein, Anna Pimenov, A. Shuvaev, X. Wang, S. -w. Cheong, Maxim Mostovoy, Andrei Pimenov
Summary: This study demonstrates a method to reverse the electric polarization of multiferroic materials by applying and removing a magnetic field, which requires two cycles to bring the system back to its original configuration. During this process, the system visits four states with different magnetic configurations, with half of the spins undergoing unidirectional full-circle rotation in increments of about 90 degrees. Therefore, this material exhibits a peculiar magnetoelectric switching behavior that converts the variations of the magnetic field into circular spin motion.
Article
Chemistry, Multidisciplinary
Jan Keuter, Alexander Hepp, Constantin G. Daniliuc, Milica Feldt, Felicitas Lips
Summary: The reaction of N(SiMe3)2SiBr3 with Rieke magnesium results in the formation of a five-vertex silicon cluster and a cyclobutadiene analogue, which can further react with various cyclic unsaturated compounds to form saturated ring compounds. Some of the products can undergo photochemical isomerization to generate new saturated ring compounds.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2021)
Article
Chemistry, Multidisciplinary
Meiling Chen, Wenyan Sun, Jingjing Yang, LuLu Yuan, Jian-Qiang Chen, Jie Wu
Summary: A general and environmentally friendly organic photo-induced strategy was developed for the synthesis of diverse alkyl-substituted beta-amino sulfone derivatives. Various carboxylic acid derivatives, from the simplest acetic acid to sterically bulky tertiary acids, can participate in this transformation.
Editorial Material
Environmental Sciences
Italo Braga Castro, Fabiano Bender Machado, Gabriela Tavares de Sousa, Cesar Paz-Villarraga, Gilberto Fillmann
Summary: This study proposed and tested an approach for assessing chemical contamination in marine protected areas (MPAs) using tributyltin (TBT) as a case study in Latin America. The results demonstrated the presence of TBT in various marine species in 53 MPAs, highlighting the potential threat to conservancy goals in these protected areas. Further research and protective measures are needed to address the impact of contaminants on wildlife in MPAs.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2021)
Article
Chemistry, Multidisciplinary
Joseph F. DeJesus, Ryan W. F. Kerr, Deborah A. Penchoff, Xian B. Carroll, Charles C. Peterson, Polly L. Arnold, David M. Jenkins
Summary: Highly symmetrical thorium and uranium octakis-carbene 'sandwich' complexes have been prepared by sandwiching the An(IV) cations between two anionic macrocyclic tetra-NHC ligands of different sizes. X-ray crystallography confirmed that the geometry of the metal center can be determined by the size of the macrocyclic ring, leading to different shapes, while DFT calculations revealed that the NHC ligands predominantly exhibit sigma-donation to the metal without pi-backbonding.
Article
Multidisciplinary Sciences
Tiangang Yang, Anyang Li, Gary K. Chen, Qian Yao, Arthur G. Suits, Hua Guo, Eric R. Hudson, Wesley C. Campbell
Summary: There is currently no consensus on the rate constants for the formation of formyl ion isomers in the reaction C+ + H2O -> HCO+/HOC+ + H, largely due to difficulties in laboratory study of ion-molecule reactions under relevant conditions. The experimental results suggest a reaction rate constant of k = 7.7(6) x 10(-9) cm(3) s(-1) and a branching ratio of formation eta = HOC+/HCO+ = 2.1(4), with theoretical calculations indicating that this branching ratio is due to the predominant formation of HOC+ followed by isomerization of products with internal energy over the isomerization barrier.
Article
Chemistry, Multidisciplinary
Shanshan Wang, Zhe Huang, Anyang Li, Yanxia Zhao, Wei Zuo, Yawen Li, Haohao Miao, Jiacheng Ma, Wei Sun, Xiaoqing Wang, Liping Cao, Biao Wu, Chuandong Jia
Summary: This study reports a cascaded guest delivery between two anionocages, where binding of K+ ions triggers the release and delivery of another guest, and elimination of K+ enables reversed guest delivery. Integrative self-sorting of anionocages is achieved for the first time, leading to enhanced guest binding affinities in heteroleptic cages.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2021)
Article
Chemistry, Multidisciplinary
Lin Liang, Boyang Li, Wenyao Zhang, Anyang Li, Bo Zheng, Xiao-Juan Yang, Biao Wu
Summary: This study introduces an anion-based triple-helicate spring that can undergo reversible contraction-extension motion through the introduction and removal of tetraalkylammonium cations. The degree of contraction can be fine-tuned by varying the shape and size of guest cation, and the meso-helicate configuration can be obtained with larger cations, which interconverts with the helicate by addition/removal of TMA(+) ion.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2021)
Article
Chemistry, Multidisciplinary
Lin Cheng, Ping Tian, Qingfang Li, Anyang Li, Liping Cao
Summary: In this study, we successfully stabilized hydrogen-bonded base pairs of monodeoxynucleotides in water using a host-guest strategy. The X-ray structure of the cage-base pair complex revealed the formation of a hydrogen-bonded base pair (A•T) with the Hoogsteen pairing rule. Additionally, the cage exhibited differentiated multiple responses, including turn-on/turn-off fluorescence, negative circular dichroism, and negative circularly polarized luminescence, triggered by two base pairs.
Article
Chemistry, Physical
Haitao Han, Xiangyu Zheng, Chengfang Qiao, Zhengqiang Xia, Qi Yang, Ling Di, Yang Xing, Gang Xie, Chunsheng Zhou, Wenyuan Wang, Sanping Chen
Summary: In this study, a highly delocalized interpenetrated 3D MOF photocatalyst was fabricated and demonstrated to effectively activate O-2 through the introduction of functional vinyl double bonds. This catalyst showed high catalytic yields in the photo-oxidative reaction of glycine esters and styrenes.
Article
Chemistry, Multidisciplinary
Fen Ma, Xinrui Qiao, Wei Zuo, Yu Tao, Anyang Li, Zhipeng Luo, Yuqi Liu, Xueru Liu, Xiaoqing Wang, Wei Sun, Chuandong Jia
Summary: This study introduces a simpler strategy for the design of anionocages using monourea as the hydrogen bonding donor. Two fluorescent quadruple helicate anionocages were successfully constructed, capable of encapsulating different sized cation guests.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
Article
Chemistry, Multidisciplinary
Wei Zuo, Yu Tao, Zhipeng Luo, Anyang Li, Shanshan Wang, Xinrui Qiao, Fen Ma, Chuandong Jia
Summary: Inspired by the signal transduction function of organophosphates, bioactive organophosphates were used as chiral nodes to control the stereoselective assembly of hydrogen-bonded anionic cages. Antibiotics such as phosphonomycin and clindamycin phosphate, antiviral drug tenofovir, and natural product AMP were assembled with an achiral bis-monourea ligand to form quadruple or triple helicates with stereoselectivity. The stereoselectivity could be enhanced by lowering temperature or using stronger-binding cations as templates. Enantioselectivity was achieved when binding chiral quaternary ammonium cations with the chiral anionic cages as hosts.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Chemistry, Multidisciplinary
Lin Cheng, Ping Tian, Honghong Duan, Qingfang Li, Xiaowen Song, Anyang Li, Liping Cao
Summary: In this study, a chiral adaptive recognition (CAR) method with sequence specificity for aromatic dipeptides was reported using an achiral tetraphenylethene-based octacationic cage as a molecular receptor and chiroptical sensor. The receptor selectively binds and dimerizes aromatic dipeptides, forming host-guest complexes with high binding affinity. The CAR method also enables the recognition of tetrapeptides, polypeptides, and proteins containing tryptophan or phenylalanine residues with characteristic circular dichroism (CD) responses.
Article
Chemistry, Analytical
Li Guan, Yanyan Zhou, Xiao Li, Yongbao Mao, Anyang Li, Yile Fu, Wen Liu, Sheying Dong, Zhen Liang, Yukui Zhang, Qun Zhao, Lihua Zhang
Summary: A universal strategy has been developed to synthesize pentamethine cyanines with different aromatic heterocycle substituents on the meso-polymethine chain, leading to the development of specific fluorescent probes with high sensitivity and robust OFF/ON switching for targeting G4s. These probes exhibit self-quenching in aqueous solution due to H-aggregation, but can be triggered to emit fluorescence upon recognition of G-quadruplexes.
ANALYTICAL CHEMISTRY
(2023)
Article
Multidisciplinary Sciences
Sruthi Venkataramanababu, Anyang Li, Ivan O. Antonov, James B. Dragan, Patrick R. Stollenwerk, Hua Guo, Brian C. Odom
Summary: Optical pumping of molecules provides unique opportunities for control of chemical reactions at a wide range of rotational energies. This work reports a chemical reaction with extreme rotational excitation of a reactant and its kinetic characterization. The authors show a marked acceleration of the hydrogen abstraction reaction between SiO+ and H-2 by exciting super-rotor states of SiO+, in a joint experimental and theoretical study.
NATURE COMMUNICATIONS
(2023)
Article
Chemistry, Inorganic & Nuclear
Liu Jing-Jing, Shang Jian-Xuan, Guo Yan, Gao Fang-Fang, Wei Jing, Zeng Fan-Long, Li An-Yang, Wang Wen-Yuan
Summary: The beta-diketiminate ligands without substituents containing active sites exhibit good electron stabilization effect and sterically protection for the low-valent metal center. Potassium was able to reduce beta-diketiminato gallium(III) dichloride to highly yield a new beta-diketiminato gallium(I) carbene analogue with good thermal stability.
CHINESE JOURNAL OF INORGANIC CHEMISTRY
(2022)
Article
Chemistry, Inorganic & Nuclear
Yuzhu Li, Jing Xi, Jesus Ferrando-Soria, Yi-Quan Zhang, Wenyuan Wang, You Song, Yan Guo, Emilio Pardo, Xiangyu Liu
Summary: This study focuses on the synthesis and characterization of two iron(II) complexes, and discovers the significant influence of magnetic anisotropy on field-induced single-ion magnet behavior. Notably, butterfly hysteresis loops were observed in the complexes.
DALTON TRANSACTIONS
(2022)
Article
Chemistry, Inorganic & Nuclear
Jingjing Liu, Jianxuan Shang, Jing Wei, Fangfang Gao, Lei Hou, Fanlong Zeng, Anyang Li, Wenyuan Wang
Summary: The synthesis and reactivity of a rigid alpha-diiminate ligand supported chlorogermylene 2 were demonstrated. Different reactions and reagents can produce germanium compounds with different properties and configurations.
DALTON TRANSACTIONS
(2022)
Proceedings Paper
Computer Science, Information Systems
Gaoxiang Li, Yuzhong Ye, Yangfei Shi, Jinlin Chen, Dexing Chen, Anyang Li
Summary: By conducting a measurement study on the characteristics of fraud SMS, this paper proposes a two-stage algorithm called TFC. TFC quickly filters normal SMS using indicator functions and easily identifies the category of fraud SMS by combining semantic deep features and domain-knowledge based artificial features.
CYBER SECURITY, CNCERT 2021
(2022)
Article
Chemistry, Multidisciplinary
Haipeng Wu, Min Li, Zhengqiang Xia, Vincent Montigaud, Olivier Cador, Boris Le Guennic, Hongshan Ke, Wenyuan Wang, Gang Xie, Sanping Chen, Shengli Gao
Summary: A dinuclear Dy-III iodine-bridged single-molecule magnet self-assembled by cis/trans coordination chemistry demonstrates unique magnetic properties with a large anisotropy barrier and hysteresis effect. Observation of high-temperature quantum tunnelling effects provides a new model for understanding the magnetic behavior of lanthanide complexes.
CHEMICAL COMMUNICATIONS
(2021)
