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| 1 | Recent advances of rhenium separation and enrichment in China: Industrial processes and laboratory trials显示文摘China is a major producer of rhenium, which is widely used in aerospace technologies(as superalloy) and petrochemical industries(as catalyst). There is a gap between the demand and fact for the enrichment of rhenium, due to its rather small content(10-9) in the earth's crust. Also, there is no available single occurrence of mineral rhenium. Instead, the rhenium is associated with either molybdenum or copper(of up to 0.2% in content) as a by-product in metallurgical industry. This makes the separation of rhenium from the major mineral metals a challenge. The recent progresses in the separation and enrichment of rhenium were reviewed in this paper, especially, the advances in China. The details of varied separation methods used either in laboratories or factories, such as ion-exchange, solvent extraction, separation utilizing extractive resins. liquid membrane, or novel materials, etc., were elaborated. Comparison of the different methods was disclosed and an outlook on the rhenium chemistry and industry in the future was brought forward. | Yin Wang Congyang Wang | 2018 | Chinese Chemical Letters2018，29，3： | 17 |
| 2 | Influence of grain size on the small fatigue crack initiation and propagation behaviors of a nickel-based superalloy at 650℃显示文摘GH4169 at 650℃ in atmosphere was investigated by using single edge notch tensile specimens. The number of main cracks and crack initiation mechanisms at the notch surface strongly depended on the grain size. The crack initiation life accounted for more percentages of the total fatigue life for the alloy with smaller grain size. The fatigue life generally increased with increasing crack initiation life. The small crack transited to long crack when its length reached 10 times the grain size. | Xumin Zhu Congyang Gong Yun-Fei Jia Runzi Wang Chengcheng Zhang Yao Fu Shan-Tung Tu Xian-Cheng Zhang | 2019 | Journal of Materials Science & Technology2019，35，8： | 9 |
| 3 | Stabilizing perovskite nanocrystals by controlling protective surface ligands density显示文摘After nanocrystals synthesis,the purification process with anti-solvents is an essential step to get clean nanocrystals,which could get rid of the by-products of the synthesis.It is generally recognized that this process could bring a positive effect for the afterward optoelectronic applications.Unfortunately,we found that the optical properties and photostability of perovskite CsPbBr3 nanocrystals were unavoidably deteriorated after they were washed with anti-solvents,and this deterioration is strongly related to the decreasing of surface ligands density.Therefore,in this paper,we tried to purposely not wash the CsPbBr3 nanocrystals solution after adding didodecyl dimethylammonium bromide (DDAB),and found the existing of DDAB in solution could result in a dramatically enhanced photostability.Inspired by these results,we proposed a new strategy to stabilize perovskite nanocrystals from the view of packaging process:adding protective ligands into the perovskite nanocrystals resin directly,then encapsulating them on blue light-emitting diodes (LED) chips.Surprisingly,stable LED devices (20 mA,2.7V) were achieved by this way,which can keep 80% of the initial photoluminescence (PL) intensity for more than 50 h,while the devices with CsPbBr3 nanocrystals without adding protective ligands into resin dropped to 50% of their initial PL intensity within 6 h.This approach offers a new thought to stabilize perovskite nanocrystals as down-conversion phosphor in quantum dots liquid crystal display. | Weilin Zheng Zhichun Li Congyang Zhang Bo Wang Qinggang Zhang Qun Wan Long Kong Liang Li | 2019 | Nano Research2019，12，6： | 4 |
| 4 | Direct silylation reactions of inert C-H bonds via transition metal catalysis显示文摘In the past thirty years,transition metal catalyzed silylation of inert C–H bonds has attracted intensive attention due to the importance and wide use of organosilicon compounds.In this review,the silylation reactions of inert C–H bonds catalyzed by transition metal complexes of Ir,Rh,Ru,Pt,Pd,Ni,and Sc,and the strategies utilized to access the site-selective C–H silylation products have been summarized.Furthermore,the mechanisms of C–H silylation reactions have been discussed briefly. | Yunhui Yang Congyang Wang | 2015 | Science China Chemistry2015，58，8： | 4 |
| 5 | Simple manganese carbonyl catalyzed hydrogenation of quinolines and imines显示文摘Manganese-catalyzed hydrogenation of unsaturated molecules has made tremendous progresses recently benefiting from non-innocent pincer or bidentate ligands for manganese.Herein,we describe the hydrogenation of quinolines and imines catalyzed by simple manganese carbonyls,Mn2(CO)10 or MnBr(CO)5,thus eliminating the prerequisite pincer-type or bidentate ligands. | Zelong Wang Lei Chen Guoliang Mao Congyang Wang | 2020 | Chinese Chemical Letters2020，31，7： | 2 |
| 6 | Diverse Fates of β-Silyl Radical under Manganese Catalysis: Hydrosilyla-tion and Dehydrogenative Silylation of Alkenes显示文摘Manganese-catalyzed hydrosilylation of alkenes has been underdeveloped for a long time. Herein, we describe a general, chemo- and regio-selective hydrosilylation of alkenes by using the Mn(CO)sBr catalyst with ample substrate scopes. Meanwhile, dehydrogenative silylation of aryl olefinscan be selectively achieved upon the catalysis of dinuclear Mn2(CO)10. Mechanistic experiments revealed diverse fates of the common intermediate β-silylradical, namely, hydrogen atom transfer (HAT) for the hydrosilylation and organometallic β-H elimination for the dehydrogenative silylation of olefins. | Xiaoxu Yang Congyang Wang | 2018 | Chinese Journal of Chemistry2018，36，11： | 2 |
| 7 | Zirconocene-mediated intermolecular coupling of one molecule of sitethered diyne with three molecules of organonitriles:One pot-formation of pyrrolo[3,2-c]pyridine derivatives via clea-vage of C=N triple bonds of organonitriles显示文摘 | Sun Xiaohua Wang Congyang Li Zhiping | | 0，，23： | 1 |
| 8 | Forging Three Single Bonds on One Carbon via Metal Carbynes or Carbyne Equivalents显示文摘Metal carbyne(M≡C)complexes have been discovered for nearly half a century,however,they gained far less study in comparison with metal-carbon single bond(M—C)and metal carbene(M=C)species in synthetic chemistry.Up to three sigma bonds are possibly forged on a single carbon through metal carbynes or carbyne equivalents,which holds great potentials in organic synthesis but also requires high efficiency of bond formation and precise control of reactivity and selectivity.Along this line,two systems based on stoi-chiometric transformations of manganese carbynes and ruthenium/rhodium-catalyzed reactions of diazo hypervalent iodine reagents,carbyne equivalents,have emerged recently,which will be highlighted herein.Future potentials and challenges in this intriguing area are also briefly discussed. | Yunhui Yang Congyang Wang | 2021 | Chinese Journal of Chemistry2021，39，12： | 1 |
| 9 | Manganese-Catalyzed Deoxygenative [3+2] Annulations of Ketones and Aldehydes via C–H Activation显示文摘Conventional reactive sites of ketones with aldehydes lie on the carbonyl andα-carbon positions,which lead to a wide range of classic reactions such as pinacol-coupling and aldol-type condensations.Herein,an unprecedented reactive site of aromatic ketones toward aldehydes has been revealed by using earth-abundant manganese catalysis,which enabled the first deoxygenative[3+2]annulations of ketones and aldehydes through C–H activation affording isobenzofuran derivatives.Mechanistic studies give hints on the dual role of triphenylborane additive in the reaction,that is,promoting C–H activation as a transmetalation reagent and activating aldehydes as a Lewis acid. | Ting Liu Yuanyuan Hu Yunhui Yang Congyang Wang | 2021 | CCS Chemistry2021，3，2： | 1 |
| 10 | Rhenium-Catalyzed Decarboxylative Tri-/Difluoromethylation of Styrenes with Fluorinated Carboxylic Acid-Derived Hypervalent Iodine Reagents显示文摘Summary of main observation and conclusion Herein,unprecedented rhenium-catalyzed decarboxylative oxytri-/difluoromethylation and Heck-type trifluoromethylation of styrenes have been developed by using hypervalent iodine(Ⅲ)reagents derived from cheap,stable,and easy-handling fluorinated carboxylic acids.Mechanistic studies revealed a radical decarboxylative trifluoromethylation pathway occurring in these reactions. | Yin Wang Yunhui Yang Congyang Wang | 2019 | Chinese Journal of Chemistry2019，37，12： | 1 |
| 11 | Manganese-Group Organometaliic Catalysis显示文摘 | Congyang Wang | 2018 | Chinese Journal of Chemistry2018，36，7： | 0 |
| 12 | Site-Selective Polyolefin Hydrogenolysis on Atomic Ru for Methanation Suppression and Liquid Fuel Production显示文摘Catalytic hydrogenolysis of end-of-life polyolefins can produce value-added liquid fuels and therefore holds great promises in plastic waste reuse and environmental remediation.The major challenge limiting the recycling economic benefit is the severe methanation(usually>20%)induced by terminal C–C cleavage and fragmentation in polyolefin chains.Here,we overcome this challenge by demonstrating that Ru single-atom catalyst can effectively suppress methanation by inhibiting terminal C–C cleavage and preventing chain fragmentation that typically occurs on multi-Ru sites.The Ru single-atom catalyst supported on CeO_(2)shows an ultralow CH_(4)yield of 2.2%and a liquid fuel yield of over 94.5%with a production rate of 314.93 gfuels gRu^(−1)h^(−1)at 250℃for 6 h.Such remarkable catalytic activity and selectivity of Ru single-atom catalyst in polyolefin hydrogenolysis offer immense opportunities for plastic upcycling. | Mingyu Chu Xianpeng Wang Xuchun Wang Xiangxi Lou Congyang Zhang Muhan Cao Lu Wang Youyong Li Sibao Liu Tsun-Kong Sham Qiao Zhang Jinxing Chen | 2023 | Research2023，，3： | 0 |
| 13 | Manganese-catalyzed bicyclic annulations of imines and α,β-unsaturated esters via C-H activation显示文摘A manganese-catalyzed bicyclic annulation of imines with α,β-unsaturated esters via C–H activation is described, which provides an expedient access to fused β-lactams in one-step operation with high efficiency and good functional group tolerance. Of note, both ketimines and aldimines are amenable to this transformation. Mechanistic studies have identified a five-membered azamanganacycle as the key reaction intermediate. | Yuanyuan Hu Congyang Wang | 2016 | Science China Chemistry2016，59，10： | 0 |
| 14 | Lending a hand to asymmetric trifluoromethylthiolation:enantioselective[2,3]-sigmatropic rearrangement of sulfonium ylides显示文摘The introduction of a trifluoromethanesulfenyl group(SCF3)into organic molecules can,in principle,significantly enhance the cell-membrane permeability,metabolic stability and bioavailability because of its high lipophilicity and intrinsic electron-withdrawing properties.As a consequence,tremendous efforts have been made to develop diverse trifluoromethylthiolation protocols by using either | Guoliang Mao Lei Chen Congyang Wang | 2017 | Science China Chemistry2017，60，12： | 0 |
| 15 | Divided or undivided? Electrolytic cells regulate site selectivity in C–H carboxylation of N-heteroarenes显示文摘The precise synthesis of molecules is of great significance to the fields of life science, material science, pharmaceutical chemistry and so on. The development of chemo-, regio-and stereo-selective reactions is therefore highly demanding in synthetic chemistry.Pyridines and related N-heteroarenes are core structures in various medicines, agricultural chemicals and bioactive molecules. | Chuang-Xin Wang Congyang Wang | 2023 | Chinese Chemical Letters2023，34，7： | 0 |
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