A5003114193- Crystallization and Solubility Studies
- X-ray Diffraction in Crystallography
- Nanocluster Synthesis and Applications
- Advanced Nanomaterials in Catalysis
- Gold and Silver Nanoparticles Synthesis and Applications
- Pharmacological Effects and Toxicity Studies
- Catalytic C–H Functionalization Methods
- Carbon dioxide utilization in catalysis
- Metal-Organic Frameworks: Synthesis and Applications
- Catalytic Cross-Coupling Reactions
- Inorganic Fluorides and Related Compounds
- Fluorine in Organic Chemistry
- Quantum Dots Synthesis And Properties
- Magnetism in coordination complexes
- Multicomponent Synthesis of Heterocycles
- Radical Photochemical Reactions
- Synthesis and Characterization of Heterocyclic Compounds
- Sulfur-Based Synthesis Techniques
- Chemical synthesis and alkaloids
- Transition Metal Oxide Nanomaterials
- Crystallography and molecular interactions
- Gas Sensing Nanomaterials and Sensors
- Synthesis and biological activity
- Pigment Synthesis and Properties
- Magnesium Oxide Properties and Applications
Henan University
2024
Anhui University
2017-2024
First Automotive Works (China)
2024
Tonghua Normal University
2015-2023
Hefei University
2017-2021
Ministry of Education of the People's Republic of China
2012-2014
Northwest Normal University
2013-2014
China XD Group (China)
2014
Lanzhou University
2013
Northwest University
2012
The copper-assisted radical carbofluorination of unactivated alkenes with fluoride ions is described. With [Cu(L3)F2]H2O (L3 = 4,4'-di(methoxycarbonyl)-2,2'-bipyridine) as the fluorine source and [Ag(DMPhen)(MeCN)]BF4 (DMPhen 2,9-dimethyl-1,10-phenanthroline) chloride scavenger, reaction CCl4 in acetonitrile provided corresponding products satisfactory yields. protocol exhibited a wide functional group compatibility broad substrate scope could be extended to use variety activated alkyl...
"Core sliding" in metal nanoclusters drives the reconstruction of external structural units and provides an ideal platform for mapping their precise transformation mechanism evolution pathway. However, observing movement behavior atoms experiments is still challenging because uncertain stability intermediates. In this work, a series Au-Cd alloy with continuously assembled kernels (one icosahedral building block 0 to 3 tetrahedral units) were constructed. As assembly continued, it eventually...
Understanding the optical properties of nanoclusters is one central tasks in fundamental research. In this work, two new Ag that have distinctly different cores but a common protecting shell are achieved, including [Ag40(2,4-DMBT)24(PPh3)8] and [Ag46(2,5-DMBT)24(PPh3)8]2+. Significantly, Ag40 nanocluster comprises simple cubic core Ag8, which observed experimentally field metal materials for first time. Using Ag46 as unique pair, we investigated effect structure on absorption these...
Bimetallic nanomaterials are of major importance in catalysis. A Au-Cu bimetallic nanocluster was synthesized that is effective catalyzing the epoxide ring-opening reaction. The catalyst analyzed by SCXRD and ESI-MS found to be Au24 Cu6 (SPhtBu)22 (Au24 for short). Six copper atoms exclusively occupy surface positions two groups with three each, each group bonded thiolate ligands give a planar motif reminiscent benzene ring. In epoxide-ring opening reaction, exhibited superior catalytic...
The preparation of 2-Oxazolidinones using CO2 offers opportunities for green chemistry, but multi-site activation is difficult most catalysts. Here, A low-nuclear Ag4 catalytic system successfully customized, which solves the simultaneous acetylene (-C≡C) and amino (-NH-) realizes cyclization propargylamine with under mild conditions. As expected, Turnover Number (TON) Frequency (TOF) values nanocluster (NC) are higher than reported Ag4* NC intermediates isolated confirmed their structures...
Abstract Direct fluorination of tertiary alkyl bromides and iodides with Selectfluor is described. The halogen‐exchange proceeds efficiently in acetonitrile at room temperature under metal‐free conditions exhibits a wide range functional group compatibility. Furthermore, the reactions are highly selective that chlorides primary secondary remain intact. A radical mechanism proposed for this fluorination.
In this study, we obtained two new nanoclusters: Pt<sub>3</sub>Ag<sub>33</sub> and Pt<sub>3</sub>Au<sub>12</sub>Ag<sub>21</sub>, explored the structure–activity relationship of their optical properties.
Abstract Precise atomic structure of metal nanoclusters (NCs) is fundamental for elucidating the structure–property relationships and inherent size‐evolution principles. Reported here largest known FCC‐based (FCC=face centered cubic) silver nanocluster, [Ag 100 (SC 6 H 3 3,4 F 2 ) 48 (PPh 8 ] − : first all‐octahedral symmetric nesting Ag nanocluster with a four‐layered @Ag 38 S 24 P structure, consistent symmetry elements, unique rhombicuboctahedral morphology distinct from theoretical...
The essential force of self-assembly in the nanocluster range is not intrinsically understood to date. In this work, synergistic effect between metals was exploited render from icosahedral M13 (M = Pd, Au) nano-building-blocks. Single-crystal X-ray diffraction analysis revealed that two Pd1Au12 icosahedrons were linked by five halogen linkages, and assembled structure determined be Pd2Au23(PPh3)10Br7. finding Au–halogen linkages rod-like M25 nanoclusters has been previously reported....
The luminescence of Au<sub>2</sub>Cu<sub>6</sub> nanocluster is controlled by tailoring the ligand to metal charge transfer <italic>via</italic> engineering phosphine ligands.
In this work, we report the synthesis and crystal structure of Au38–xCux(2,4-DMBT)24 (x = 0–6, 2,4-DMBTH 2,4-dimethylbenzenethiol) alloy nanocluster for first time. A variety characterizations including ESI-MS, TGA, XPS reveal composition as 0–6). The single has been determined by an X-ray diffractometer. From anatomy structure, a bi-icosahedral Au23 core is protected six dimeric [−SR–M–SR–M–SR−] units (M Cu/Au) three monomeric [−SR–Au–SR−] units. It interesting that all Cu atoms are...
Owing to advantages in synthesis, separation, structure determination, and low cost (compared noble metal nanoclusters), Ag/Cu hydride clusters (and their alloys) have received increasing research interest recent decades shown great potential mediating reduction reactions H<sub>2</sub> storage applications. The atomic precision of the with combination single-crystal X-ray diffraction, <sup>1/2</sup>H nuclear magnetic resonance, electrospray ionization mass spectrometry, density functional...
The Cu-glutathione (GSH) redox system, essential in biology, is designed here as a supramacromolecular assembly which the tetrahedral 18e Cu(I) center loses thiol ligand upon adsorption onto ZIF-8, shown by EXAFS and DFT calculation, to generate very robust 16e planar trigonal single-atom catalyst. Synergy between revealed catalytic experiments affords CO
Abstract An efficient method for carbon‐carbon bond formation is described. The process employs the palladium‐catalyzed copper‐mediated cross‐coupling of diheteroaryl disulfides with arylboronic acids or alkynes to deliver CC coupling products through unreactive CS cleavage. scope reactions, including both and alkynes, are documented. magnified image
Single-ligand exchange between phosphine and selenolate on Au<sub>13</sub>Cu<sub>4</sub> is achieved the process exhibits high site specificity.
Abstract Developing new templates to evaluate the ligand engineering effect in manipulating nanoclusters from both molecular and supramolecular aspects remains highly desired cluster science because it allows for an in‐depth understanding of structure‐property correlations. We herein presented secondary (i.e., phosphine ligand) based on Ag 29 nanocluster template its dual effects intracluster structures intercluster aggregates. The “dissociation‐combination equilibrium” ligands surface was...
Understanding the ligand effects in nanocluster (NC) range is crucial for tailoring properties. We herein report on crystal structure of Au15Ag3(SPhMe2)14 nanocluster. Compared with previously reported Au15Au3(SC6H11)14 nanocluster, exhibits a different and electronic structure, which further affects optical spectra because effect. In combination density functional theory (DFT) calculations, differences UV/Vis were found to be caused by distinct components frontier orbitals. addition,...
The size conversion of atomically precise metal nanoclusters is fundamental for elucidating structure-property correlations. In this study, copper salt (CuCl)-induced growth from [Au4Cu4(Dppm)2(SAdm)5]+ (abbreviated as [Au4Cu4S5]+) to [Au4Cu6(Dppm)2(SAdm)4Cl3]+ [Au4Cu6S4Cl3]+) (SAdmH = 1-adamantane mercaptan, Dppm bis-(diphenylphosphino)methane) was investigated via experiments and density functional theory calculations. [Au4Cu4S5]+ adopts a defective pentagonal bipyramid core structure with...
Abstract Direct fluorination of tertiary alkyl bromides and iodides with Selectfluor is described. The halogen‐exchange proceeds efficiently in acetonitrile at room temperature under metal‐free conditions exhibits a wide range functional group compatibility. Furthermore, the reactions are highly selective that chlorides primary secondary remain intact. A radical mechanism proposed for this fluorination.