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Chinese Chemical Letters 1996年第4期7卷 381-384页

作者： Wu, He Ping ding, er run Yin, Yuan Qi Huano, Xiao Ying Yu, Kai Bei Lanzhou Inst. of Chemical Physics Chinese Academy of Sciences Lanzhou 730000 Fuzhou Inst. on Structure of Matter Stn. Key Lab. of Structure Chemistry Fuzhou 350002 Chengdu Ctr. of Anal. and Msrmt. Chinese Academy of Sciences Chengdu 610041

The reactions of dusters (μ3- CCO2Et)Co2M (CO)8(MeCp)[M = Mo(2a),W(2b)], derived from the reaction of (μ3-CCO2Et)Co3(CO)9 with Na[M(CO)3(MeCp)], with Na2[Fe(CO)4] in THF at reflux not only gave the expected metal fragment exchange products (μ3-CCO2Et) FeCoM (CO)6(Me-Cp )H [M=Mo(3a), W(3b)] but also produced the unexpected compounds (μ3-CCO)FeCoM (CO)5(MeCp) [M=MO(4a), W(4b)]. It is suggested that the formation of two kinds of compounds resulted from two competitive reactions of the intermediates [(μ3-CCO2Et) FeCo M(CO)8,(MeCp)] with 11+: the one is the Protonic reaction of the intermediate giving the cluster 3a,b; the another one is the intermolecular nucleophilic substitution reaction of the intermediate under the H+ catalytic action giving the cluster 4a,b.

关键词：

Structural Characterization of the Chiral Skeleton ClusterRuCoMo (Co)_8(μ_3-Se ) C_5H_4C (O) C_6H_4C (O)OCH_3

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Chinese Journal of Structural Chemistry 1998年第5期17卷 372-376页

作者： ding er-run LI Qing-Shan WU Shu-Lin YIN Yuan-Qi(State Key Laboratory of Oxo Synthesis and Selective oxidation,Lanzhou Institute of Chemical Physics, the Chinese Academy of Sciences, Lanzhou 730000)SUN Jie (Shanghai Institute of Organic Chemistry, the C State Key Lab. Oxo Synthesis/S.O. Lanzhou Inst. of Chemical Physics Chinese Academy of Sciences Lanzhou 730000 China Shanghai Inst. of Organic Chemistry Chinese Academy of Sciences Shanghai 200032 China

The chiral cluster RuCoMo（CO）8 （μ3-Se）C5H4C （O）C6H4C （O）OCH3was synthesizgd by the thermal reaction of the precursor （μ3-Se）RuCo2（Co）9 with ’thefunctionally substituted cyclopentadienyl tricarbonyl metal complex anions [Mo（CO）3（η5-C5H4） C （O）C6H4C （O） OCH3]- in THF. It was characterized by C/H elementalanalysis, IR, 1H/13C-NMR and MS （FAB）, and its crystal structure has also beensolved by single-crystal X-ray diffraction. Crystal data: Mr=786. 23, triclinic, spacegroup P1, a =8. 200（2）, b= 19. 631 （7）, c=7.997（2） , a=92. 50（2）, β=108. 66 （2）, γ=88. 97（2）°, V= 1218. 5（6） , Z=2, Dc=2. 143g/cm3, F（000） =756. 00, μ= 33. 44cm-1, the final R =0. 054 and R.= 0. 077 for 2644 observationswith （I≥3.0σ（I））.

关键词： transition metal cluster complex chiral crystal structure

高效液相色谱直接分离μ-FcCCHCoW(CO)_5(CpCOOC_2H_5)簇合物对映体

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高等学校化学学报 1998年第9期19卷 1397-1400页

作者：吴树林周志强中国科学院兰州化学物理研究所

将三（苯基氨基甲酸）支链淀粉酯涂敷在硅胶上制成了手性固定相．将支链淀粉与过量的苯异氰酸酯在吡啶中反应得到的苯基氨基甲酸酯溶解并涂敷在用３－氨基丙基三乙氧基硅烷处理过的硅胶上，涂敷量为０．４５／２．５５（重量比）．用此... 详细信息

将三（苯基氨基甲酸）支链淀粉酯涂敷在硅胶上制成了手性固定相．将支链淀粉与过量的苯异氰酸酯在吡啶中反应得到的苯基氨基甲酸酯溶解并涂敷在用３－氨基丙基三乙氧基硅烷处理过的硅胶上，涂敷量为０．４５／２．５５（重量比）．用此手性固定相拆分了外消旋的簇合物μ－ＦｃＣＣＨＣｏＷ（ＣＯ）５（ＣｐＣＯＯＣ２Ｈ５）．拆分在室温下进行，洗脱液为甲醇，流速为０．５ｍＬ／ｍｉｎ．

关键词：高效液相色谱双核簇合物二茂铁拆分固定相

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新型双四面体过渡金属簇合物的合成与表征

高等学校化学学报 1999年第8期20卷 1172-1178页

作者：张 陈学年丁二润殷元骐孙杰中国科学院兰州化学物理研究所羰基合成与选择氧化国家重点实验室兰州730000 中国科学院上海有机化学研究所上海200032

利用 Co2 ( CO) 8与 [Cl3CC( O) OCH2 ] 2 的反应合成了以 C( O) OCH2 CH2 OC( O)桥联两个Co3C四面体骨架为特征的新型双四面体簇合物 [( CO) 9Co3(μ3 C) C( O) OCH2 ] 2 ( 1 ) ;1与不同物质的量比的 Na[M( CO) 3C5H4R] ( M=Mo,W;R=H,C... 详细信息

利用 Co2 ( CO) 8与 [Cl3CC( O) OCH2 ] 2 的反应合成了以 C( O) OCH2 CH2 OC( O)桥联两个Co3C四面体骨架为特征的新型双四面体簇合物 [( CO) 9Co3(μ3 C) C( O) OCH2 ] 2 ( 1 ) ;1与不同物质的量比的 Na[M( CO) 3C5H4R] ( M=Mo,W;R=H,C( O) Me)反应 ,得到一步交换的产物( CO) 9Co3( μ3 C) C( O) OCH2 CH2 OC( O) ( μ3 C) Co2 M( CO) 8( C5H4R) [M=Mo,R=H ( 2 ) ;M=Mo,R=C( O) Me( 3) ;M=W,R=H( 4) ;M=W,R=C( O) Me( 5) ]或两步交换的产物[( C5H4R) ( CO) 8Co2 M( μ3 C) C( O) OCH2 ] 2 [M=Mo,R=H( 6 ) ;M=Mo,R=C( O) Me( 7) ;M=W,R=H( 8) ;M=W,R=C( O) Me( 9) ] .5或 9分别与 Na[Mo( CO) 3C5H5]以 1 2的物质的量比反应得到含一个手性四面体骨架 ( Co Mo WC)的 ( C5H5) ( CO) 8Co2 Mo( μ3 C) C( O) OCH2 CH2 O·C( O) ( μ3 C) Co Mo W( CO) 7( C5H4C( O) Me) ( C5H5) ( 1 0 )或含两个手性四面体骨架 ( Co Mo WC)的[( C5H5) ( C5H4C( O) Me) ( CO) 7Co Mo W(μ3 C) C( O) OCH2 ] 2 ( 1 1 ) ;对化合物 1 _ 1 1进行了 C H元素分析、IR和 1 H NMR等表征 .结果表明 ,在金属交换反应中处于不同簇环境下的 Co( CO) 3基团反应活性不同 .对化合物 1进行了晶体 X射线衍射分析 .化合物 1的晶体属单斜晶系。

关键词：羰基簇合物双四面体簇合物金属交换反应

Synthesis and Crystal Structure of Co 3(CO) 9( μ 3 C)C(O)OCH 2 2

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Chinese Journal of Structural Chemistry 1999年第2期18卷 70-74页

作者： ZHANG Jie CHEN Xue Nian ding er run ZHANG Yu Hua YIN Yuan Qi ② (State Key Laboratory for Oxo Synthesis and Selective Oxidation, Lanzhou Institute of Chemical Physics, the Chinese Academy of Sciences, Lanzhou, 730000) SUN Jie (Shangha

The title compound Co 3(CO) 9( μ 3 C)C(O)OCH 2 2 was synthesized by the reaction of Cl 3CC(O)OCH 2 2 with Co 2(CO) 8 at 40￣50 ℃. Crystal data: C 24 H 4O 22 Co 6, M r =997.88, mon... 详细信息

The title compound Co 3(CO) 9( μ 3 C)C(O)OCH 2 2 was synthesized by the reaction of Cl 3CC(O)OCH 2 2 with Co 2(CO) 8 at 40￣50 ℃. Crystal data: C 24 H 4O 22 Co 6, M r =997.88, monoclinic, space group P2 1/n(#14), a=9.330(2), b=15.197(4), c=11.783(4) , β=91.16(2)°, V=1670.4(7)  3, Z=2, D c =1.984 g/cm 3 , μ (Mo Kα )=30.01 cm -1 , F(000)=972.00, T=293K , final R=0.045, R w =0.051 for 1936 observed reflections with I>2σ(I) . The structure contains two centrosymmetric dimeric molecules in a unit cell, each of which has two tetrahedral skeletons (CCo 3) connected through a C(O)OCH 3CH 2OC(O) bridge.

关键词： synthesis crystal structure cobalt cluster capping reaction

高效液相色谱直接分离μ-FcCCHCoW(CO)5(CpCOOC2H5)簇合物对映体

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高等学校化学学报 1998年第9期 44-47页

作者： WU Shu Lin, ZHOU Zhi Qiang, ding er run, YIN Yuan Qi * (State key Laboratory of Oxo Synthesis and Selective Oxidation, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou, 730000 )

关键词：高效液相色谱三(苯基氨基甲酸)支链淀粉酯外消旋双核簇合物

直链淀粉手性固定相对8种外消旋硫代缩水甘油醚的直接拆分

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高等学校化学学报 1998年第11期19卷 1755-1757页

作者：周志强丁二润胡雨来于兆文陈立仁中国科学院兰州化学物理研究所

利用高效液相色谱进行不对称拆分是十分有效的方法，其中多糖类手性固定相是非常重要的一种，它主要包括纤维素和淀粉两大类，Ｏｋａｍｏｔｏ等［１～３］合成了大量的纤维素和直链淀粉的衍生物，并将其涂敷在大孔硅胶表面，从而制备了... 详细信息

利用高效液相色谱进行不对称拆分是十分有效的方法，其中多糖类手性固定相是非常重要的一种，它主要包括纤维素和淀粉两大类，Ｏｋａｍｏｔｏ等［１～３］合成了大量的纤维素和直链淀粉的衍生物，并将其涂敷在大孔硅胶表面，从而制备了手性拆分能力较强的多种固定相，这类...

关键词： HPLC 直链淀粉手性固定相硫代缩水甘油醚拆分

Multi-layer multi-pass friction rolling additive manufacturing of Al alloy:Toward complex large-scale high-performance components

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International Journal of Minerals,Metallurgy and Materials 2025年第2期32卷 425-438页

作者： Haibin Liu run Hou Chenghao Wu Ruishan Xie Shujun Chen College of Mechanical&Energy Engineering Beijing University of TechnologyBeijing 100124China Chongqing Research Institute of Beijing University of Technology Chongqing 401121China

At present,the emerging solid-phase friction-based additive manufacturing technology,including friction rolling additive man-ufacturing(FRAM),can only manufacture simple single-pass *** this study,multi-layer multi-pass FRAM-deposited alumin-um alloy samples were successfully prepared using a non-shoulder tool *** material flow behavior and microstructure of the over-lapped zone between adjacent layers and passes during multi-layer multi-pass FRAM deposition were studied using the hybrid 6061 and 5052 aluminum *** results showed that a mechanical interlocking structure was formed between the adjacent layers and the adja-cent passes in the overlapped center *** friction and rolling of the tool head led to different degrees of lateral flow and plastic deformation of the materials in the overlapped zone,which made the recrystallization degree in the left and right edge zones of the over-lapped zone the highest,followed by the overlapped center zone and the non-overlapped *** tensile strength of the overlapped zone exceeded 90%of that of the single-pass deposition *** is proved that although there are uneven grooves on the surface of the over-lapping area during multi-layer and multi-pass deposition,they can be filled by the flow of materials during the deposition of the next lay-er,thus ensuring the dense microstructure and excellent mechanical properties of the overlapping *** multi-layer multi-pass FRAM deposition overcomes the limitation of deposition width and lays the foundation for the future deposition of large-scale high-performance components.

关键词： aluminum alloy additive manufacturing solid-state friction stir welding multi-layer multi-pass

Neuronal regulated cell death in aging-related neurodegenerative diseases:key pathways and therapeutic potentials

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Neural Regeneration Research 2025年第8期20卷 2245-2263页

作者： run Song Shiyi Yin Jiannan Wu Junqiang Yan Department of Neurology The First Affiliated HospitalCollege of Clinical Medicine of Henan University of Science and TechnologyLuoyangHenan ProvinceChina Neuromolecular Biology Laboratory The First Affiliated HospitalCollege of Clinical Medicine of Henan University of Science and TechnologyLuoyangHenan ProvinceChina

Regulated cell death(such as apoptosis,necroptosis,pyroptosis,autophagy,cuproptosis,ferroptosis,disulfidptosis)involves complex signaling pathways and molecular effectors,and has been proven to be an important regulatory mechanism for regulating neuronal aging and ***,excessive activation of regulated cell death may lead to the progression of aging-related *** review summarizes recent advances in the understanding of seven forms of regulated cell death in age-related ***,the newly identified ferroptosis and cuproptosis have been implicated in the risk of cognitive impairment and neurodegenerative *** forms of cell death exacerbate disease progression by promoting inflammation,oxidative stress,and pathological protein *** review also provides an overview of key signaling pathways and crosstalk mechanisms among these regulated cell death forms,with a focus on ferroptosis,cuproptosis,and *** instance,FDX1 directly induces cuproptosis by regulating copper ion valency and dihydrolipoamide S-acetyltransferase aggregation,while copper mediates glutathione peroxidase 4 degradation,enhancing ferroptosis ***,inhibiting the Xc-transport system to prevent ferroptosis can increase disulfide formation and shift the NADP^(+)/NADPH ratio,transitioning ferroptosis to *** insights help to uncover the potential connections among these novel regulated cell death forms and differentiate them from traditional regulated cell death *** conclusion,identifying key targets and their crosstalk points among various regulated cell death pathways may aid in developing specific biomarkers to reverse the aging clock and treat age-related neurodegenerative conditions.

关键词： apoptosis autophagy cuproptosis disulfidptosis ferroptosis necroptosis neurodegenerative disease neurological aging diseases PANoptosis pyroptosis

Rock fracture mechanism of buffer blasting with cushion layer at the borehole bottom

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International Journal of Minerals,Metallurgy and Materials 2025年第2期32卷 325-334页

作者： Xinguang Zhu Chenxi ding Zhe Sui Hong Su Xu Guo School of Civil and Resources Engineering University of Science and Technology BeijingBeijing 100083China Key Laboratory for Mechanics in Fluid Solid Coupling Systems Institute of MechanicsChinese Academy of SciencesBeijing 100190China School of Mechanics and Civil Engineering China University of Mining and Technology(Beijing)Beijing 100083China School of Chemical and Blasting Engineering Anhui University of Science and TechnologyHuainan 232001China

This study primarily investigates the rock fracture mechanism of bottom cushion layer blasting and explores the effects of the bottom cushion layer on rock *** involves analyses of the evolution patterns of blasting stress,characteristics of crack distribution,and rock fracture features in the ***,blasting model experiments were carried out using the dynamic caustics principle to investigate the influence of bottom cushion layers and initiation methods on the integrity of the bottom rock *** experimental results indicate that the combined use of bottom cushion layers and inverse initiation effectively protects the integrity of the bottom rock ***,the process of stress wave propagation and dynamic crack propagation in rocks was simulated using the continuum-discontinuum element method(CDEM)and the Landau explosion source model,with varying thicknesses of bottom cushion *** numerical simulation results indicate that with increasing cushion thickness,the absorption of energy generated by the explosion becomes more pronounced,resulting in fewer cracks in the bottom rock *** illustrates the positive role of the cushion layer in protecting the integrity of the bottom rock mass.

关键词： bottom cushion layer blasting crack propagation continuum-discontinuum element method dynamic stress intensity factor