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Crystal and molecular structure of(μ-p-CH_3C_6H_4C_2S) (μ-n-C_3H_7S)Fe_2(CO)_6CO_2(CO)_6

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Acta Chimica Sinica English Edition 1989年第1期7卷 16-23页

作者： wang Ru-Ji SONG Li-Cheng wang Hong-Gen wang zhong-xia wang Ji-Tao Central Laboratory,Nankai University,Tianjin Central Laboratory Nankai University Tianjin

The crystal and molecular structure of the complex containing cobalt-carbon and iron- sulfur cluster cores,(μ-ρ-CH_3C_6H_4C_2S)(μ-n-C_3H_7S)Fe_2(CO)_6Co_2(CO)_6,has been determined by X-ray diffraction *** crystals are triclinic,space group P,with a=9.139(2),b=9.610(1), c=17.183(2),α=84.36(1),β=89.45(1),γ=88.15(1)°,V=1501.0~3;Z=2,D_c=1.74 g/cm^3. R=0.072,Rw=*** results of the structure determination show a cobalt-carbon cluster core formed through the reaction of(μ-ρ-CH_3C_6H_4C_2S)(μ-n-C_3H_7S)Fe_2(CO)_6 with Co_2(CO)_*** the cobalt-carbon cluster core,the bond length of the original C≡C lengthened to 1.324 which is close to the typical value of carbon-carbon double *** groups connecting the carbons of the cluster core are in cis position and lie on the opposite side of cobalt *** this complex,the conformation of-SC_3H_7 is e-type,while that of-SC_2C_6H_4CH_3 is a-type.

关键词： Crystal and molecular structure of p-CH3C6H4C2S Co Fe n-C3H7S)Fe2 CO CH

The targeting expression of the vascular endothelial growth factor gene in endothelial cells regulated by ***-1

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Science China(Life Sciences) 2008年第11期51卷 959-965页

作者： ZHENG xiangRong, ZHANG ShangShang, YANG YuJia, wang xia, zhong Le & YU xiaoHe Department of Pediatrics, xiangya Hospital, Central South University, Changsha 410008, China Department of Pediatrics Xiangya Hospital Central South University Changsha China

The success of gene therapy depends largely on the efficacy of gene delivery vector systems that can deliver genes to target organs or cells selectively and efficiently with minimal toxicity. Here, we show that by using the ***-1 regulatory element, we were able to restrict expression of the transgene of vascular endothelial growth factor (VEGF) to endothelial cells exclusively in hypoxic conditions. Eukaryotic expression vectors such as ***-1, pcDNA3.1-VEGF+Pa, pcDNA3.1-ppET-1+ EGF+Pa, and ***-1+VEGF+Pa were constructed by using a series of nuclear molecule handling methods like PCR, enzyme digestion. The recombinant vectors were transfected into HUVEC cells and HL7702 cells by the lipofectin method. GFP expression was observed with a fluorescence microscope to validate the specificity of expression in endothelial cells under the regulation of ***-1 element. Cobalt chloride (final concentration 100 μmol/L) was added to the medium to mimic hypoxia in vitro. After transfection of vectors, the expression of VEGF mRNA was detected by RT-PCR, and the expression of VEGF was detected by Western blotting and ELISA methods under normoxia and hypoxia, respectively. The cell proliferation rate was detected by the MTT test. The ex- pression of GFP revealed that the exterior gene was transcripted effectively in endothelial cells regu- lated by the ***-1 element, while the expression of GFP was very weak in nonendothelial cells. The results of RT-PCR, Western blotting and ELISA showed that VEGF gene expression in the ***-1+VEGF+Pa group and in the pcDNA3.1-ppET-1+VEGF+Pa group was higher in hypoxia than it was in normoxia (Pxia exceeded that of the control group. We conclude that the ***-1 element was expressed specifically in endothelial cells, and can increase the expression of VEGF in hypoxia and stimulate proliferation of

关键词： hypoxia-responsive element human preproendothelin-1 promoter vascular endothelial growth factor endothelial cells

Metal-organic frameworks with dinuclear metal centers for synergistically boosting CO2 photoreduction

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Science China Chemistry 2025年第1期68卷 201-208页

作者： Hui-Feng wang Wen-Jie Shi Yu-Xin Yang Bao-xia Dong Tong-Bu Lu Di-Chang zhong School of Chemistry and Chemical Engineering Yangzhou University Institute for New Energy Materials and Low Carbon Technologies School of Materials Science and Engineering Tianjin University of Technology

Dinuclear metal synergistic catalysis （DMSC） has been proved powerful in boosting CO2reduction,while this has not been achieved in heterogeneous catalysts with long-range order *** this study,we,by introduction of metal catalytic centers into an indium-based metal-organic framework （MOF）,obtained a series of isostructural In-MOFs,including three MOFs with mononuclear metal catalytic center （M-In）,three MOFs with dinuclear homometallic catalytic centers （MM-In）,and three MOFs with dinuclear heterometallic catalytic centers (MM’-In,M/M’=Co（II）,Ni（II）,Zn（II）).It was found that all these MOFs can serve as catalysts for photochemical CO2reduction to *** with M-In,the catalytic activities of MM-In were obviously enhanced,and that of MM’-In was further significantly *** example,the CO yield of Co Zn-In reaches a record value of 12,700μmol g-1h-1,which is 4.0,8.1,9.4,and 18.6-fold higher than that of Co Co-In,Zn Zn-In,Co-In,and Zn-In,***,the catalytic activities of Co Ni-In and Ni Zn-In also show different fold increase than those of corresponding dinuclear homometallic and mononuclear metallic *** results of control experiments and theoretical calculation reveal that the higher catalytic activities of MM-In over M-In can be ascribed to the DMSC effect,and the higher catalytic activity of MM’-In over MM-In can be ascribed to the strengthened DMSC *** work reveals the relationship between DMSC effect and bimetal centers in CO2reduction,which provides new insights into the DMSC and paves a new way to design highly active catalysts for photochemical CO2reduction.

关键词： metal-organic frameworks dinuclear metal centers synergistic catalysis CO2 reduction photocatalysis

Studies on addition of arynyl Grignard reagents to (μ-dithio)bis(tricarbonyliron) ——Synthesis, structures and formation mechanism of 'open' and 'closed' iron-sulfur cluster complexes

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Acta Chimica Sinica(English Edition) 1988年第3期6卷 223-229页

作者： Mbiyengandu Kadiata Department of Chemistry Nankai University Tianjin

Arynylmagnesium bromides cleave the S-S bond of μ-S2Fe2（CO）6 to give equilibrium mixtures of 'open' intermediates （μ-ArCS）（μ-BrMgS）Fe2（CO）6 and 'closed' intermediates μ-[S（Ar）C=C（MgBr）S]Fe2（CO）6. The mixtures were treated with CpFe（CO）2I or some of organic halides to yield corresponding 'open' Fe-S complexes, whereas with CF3CO2H, gaseous HBr or CH3HgCl to afford the 'closed' ones. The 'closed' products were also observed with those alkyl halides which eliminate HX easily. So, this kind of alkyl halides possibly functions as substrates through elimination of HX in reaction courses.

关键词： structures and formation mechanism of closed open iron-sulfur cluster complexes dithio)bis Studies on addition of arynyl Grignard reagents to Synthesis

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房屋租赁市场中租金的确定方法研究

中国管理科学 2004年第Z1期12卷 323-328页

作者：王吓忠福州大学房地产研究所福建福州350002

随着我国房地产市场的重要组成部分房屋租赁市场的发展,加强租赁市场管理、理顺房屋租赁中的各方经济利益关系已成为急待解决的问题,而房屋租赁价格的确定是经济问题的核心.本文通过对租赁价格性质、构成要素、影响因素及估价原则的认识... 详细信息

随着我国房地产市场的重要组成部分房屋租赁市场的发展,加强租赁市场管理、理顺房屋租赁中的各方经济利益关系已成为急待解决的问题,而房屋租赁价格的确定是经济问题的核心.本文通过对租赁价格性质、构成要素、影响因素及估价原则的认识,对各种房屋租赁价格的估价方法进行了探讨,最后对各方法进行述评并指出实践中应注意的问题.

关键词：房屋租赁租赁价格估价方法

Study on cobalt-carbon and iron-sulfur mixed cluster complexes——Synthesis and conformational analysis of mixed cluster complexes [μ-p-CH_3C_6H_4C_2Co_2 (CO)_6 S](μ-RS)Fe_2(CO)_6

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Acta Chimica Sinica English Edition 1989年第2期7卷 130-135页

作者： SONG Li-Cheng wang zhong-xia wang Ji-Tao Department of Chemistry Nankai UniversityTianjin

Through complexation reaction of arynyl Fe-S complexes A(μ-p-CH_3C_6H_4C≡CS)(μ- RS)Fe_2(CO)_6 with Co_2(CO)_6, eight mixed cluster complexes B[μ-p-CH_3C_6H_4C_2Co_2(CO)_6S](μ- RS)Fe_2(CO)_6 have been synthesized. Reactivity of the complexation reaction is approximately equi- valent to that of the reaction of diarylacetylene with Co_2(CO)_8. Conformational analysis has shown that R groups in complexes A are linked to sulfur atoms by a-and e-bond, whereas that in B only by art e-type of bond.

关键词： Co Fe Study on cobalt-carbon and iron-sulfur mixed cluster complexes Synthesis and conformational analysis of mixed cluster complexes CO CH

Intermolecular reductive coupling of aliphatic ketones with alkynes and alkenes by BCN photocatalysts

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Science China Chemistry 2025年第1期68卷 181-185页

作者： Yanping xia Luyang Sun Jiajia Cheng Sibo wang Meifang Zheng Xinchen wang State Key Laboratory of Photocatalysis on Energy and Environment College of Chemistry Fuzhou University

A photocatalytic process was developed for intermolecular reductive coupling of aliphatic ketones with alkynes/alkenes to furnish tertiary alcohols. Mechanistic studies support that boron carbonitrides(BCN) promote the single electron reduction of unactivated aliphatic ketones to generate ketyl radicals with visible light irradiation, which then react with alkynes and alkenes to afford the allylic and aliphatic alcohols, respectively. The heterogeneous photocatalytic system is compatible with diverse substrates including pharmaceutical-related molecules(43 examples) with reusability and scale-up experiments, verifying the complementary synthetic utility of this method to the homogeneous catalysts.

关键词： aliphatic ketones ketyl radical intermolecular cross-coupling tertiary alcohols

Potential dependence in electrocatalysis: a theoretical perspective

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Science China Chemistry 2025年第1期68卷 21-25页

作者： Leyu Liu Zhaoming xia Zeyu wang Yinjuan Chen Hai xiao Department of Chemistry Tsinghua University Fundamental Science Center of Rare Earths Ganjiang Innovation Academy Chinese Academy of Sciences Key Laboratory of Advanced Catalytic Materials and Technology Advanced Catalysis and Green Manufacturing Collaborative Innovation Center Changzhou University

Electrocatalysis is a key technology for the new energy era and sustainable development, serving as the interface for interconversion of electrical and chemical energies, which spans a wide spectrum of applications in sustainable energy and environmental engineering. Electrocatalytic reactions including electrochemical CO2reduction reaction （eCO2RR）, hydrogen evolution reaction （HER）, and oxygen evolution/reduction reactions （OER/ORR）, hold essential promise for renewable energy technologies as well as complement the biogeochemical carbon and oxygen cycles.

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廉租房相关问题研究

城市问题 2006年第6期 61-64页

作者：王吓忠巫月娥厦门大学经济研究所福州大学房地产研究所

当前房地产市场供给结构性矛盾突出,面向中低收入阶层的经济适用房所占比例较低,对解决中低收入家庭的住房需求作用有限;面向最低收入家庭的廉租住宅严重“缺位”,对城市发展过程中廉租房的相关问题进行了研究,目的在于构建面向住房弱... 详细信息

当前房地产市场供给结构性矛盾突出,面向中低收入阶层的经济适用房所占比例较低,对解决中低收入家庭的住房需求作用有限;面向最低收入家庭的廉租住宅严重“缺位”,对城市发展过程中廉租房的相关问题进行了研究,目的在于构建面向住房弱势群体的城市住房保障制度。

关键词：廉租房住房弱势群体住房保障