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Green and controllable metal-free nitrification and nitration of arylboronic acids

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Chinese Chemical Letters 2012年第6期23卷 643-646页

作者： Shuai wang Chun Chun Shu Tao wang jian Yu guo Bing Yan Department of Chemistry Lishui University Lishui 32300 China

A novel and green nitrating reagent has been developed for the nitrification and nitration of arylboronic acids, which can be controlled by the reaction conditions. The process provides an attractive alternative to th... 详细信息

关键词： Nitrification Nitration Arylboronic acids

Slag for Decopperization and Sulphur Control in Molten Steel

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Journal of Iron and Steel Research International 2009年第2期16卷 17-21页

作者： wang jian-jun guo Shang-xing ZHOU Li LI Qiang Metallurgy and Resources Institute Anhui University of Technology Ma'anshan 243002 Anhui China

Decopperization in molten steel with FeS-Na2 S slag was investigated in the laboratory. It was found that with an increase in FeS content of the FeS-Na2 S slag, the decopperization ratio increased. The decopperization ratio could reach the maximum of 71.6% in hot metal. The decopperization ratio was closely related to the carbon content, and the higher the carbon content, the higher was the decopperization ratio. Sulphur addition was found in the process of decopperization, and the increase in sulphur content of molten steel was about 0. 2%-0. 42%. However, by adding 30%-50% of BaO to the FeS-Na2 S slag, the addition of sulfur content in molten steel could be reduced by about 50%. The finer slag system composition was FeS ： NazS ： BaO=40 ： 20 ： 40.

关键词： molten steel decopperization FeS

Synthesis and Crystal Structure of N-[4-(4-Methyl-phenylsulfamoyl)-phenyl]- 4-methyl-1,2,3-thiadiazole-5-carboxamide

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Chinese Journal of Structural Chemistry 2007年第5期26卷 501-504页

作者： wang jian-guo XIAO Yong-Jun Li Zheng-Ming SONG Hai-Bin （Elemento-organic Chemistry hlstitute State Key Laboratory ofElemento-organic Chemistry Nankai University Tianjin 300071 China

The crystal structure of the title compound （C17H16N4O3S2, Mr = 388.46） has been determined by single-crystal X-ray diffraction. The crystal belongs to monoclinic, space group P21/c with a = 13.688（2）, b = 16.704（3）, c = 8.3308（12）A, β = 99.474（6）°, V = 1878.8（5） A^3, Mr = 388.46, Z = 4, Dc = 1.373 g/cm3, μ = 0.308 mm^–1, F（000） = 808, R = 0.0389 and wR = 0.0917. X-ray analysis reveals that the crystal structure involves intermolecular N–H…O and N–H…N hydrogen bonds, which link the molecules into a layer parallel to the ac plane.

关键词： X-ray diffraction crystal structure synthesis

Synthesis and Crystal Structure of 5-N-i-Propyl-2-(2′-nitrobenzenesulfonyl)-glutamine

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Chemical Research in Chinese Universities 2006年第6期22卷 760-762页

作者： XIAO Yong-jun wang jian-guo wang Bao-lei LI Zheng-ming SONG Hai-bin Elemento-Organic Chemistry Institute State Key Laboratory of Elemento-Organic Chemistry Nankai University Tianjin 300071 P. R. China

The title compound, 5 -N-i-propyl-2-（2＇ -nitrobenzenesulfonyl）-glutamine, was synthesized and its structure was confirmed by IB, MS, ^1H NMB, and elemental analysis. The single crystal structure of the title compound was determined by X-ray diffraction. The crystal belongs to Monoclinic, space group P2（ 1 ）, with a =0. 69281 （ 11 ） nm, b = 0. 76508（12）, c = 1. 5843（3） nm, α=90°, β =90. 941 （3）°, γ =90°, V=0. 8397（2） nm^3, Z =-2, Dc = 1.477 g/cm^3,μ =0. 236 mm^-1, F（000） =392, R =0. 0297, and wR=0.0664.

关键词： 5 -N-i-Propyl-2-( 2' -nitrobenzenesulfonyl) -glutamine Synthesis Crystal structure

Calculation of the High-n Dielectronic Satellites of K_(α) Resonance Lines for Heliumlike Iron

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Chinese Physics Letters 1998年第2期15卷 101-102页

作者： wang jian-guo CHANG Tie-qiang DONG Chen-zhong Institute of Applied Physics and Computational Mathematics Beijing I00088 Department of Physics Northwest Normal UniversityLanzhou 730070

A simplified relativistic configuration interaction method is used to study the dielectronic satellite transition processes,in which the whole high-n dielectronic satellite transition processes can be treated conveniently in the frame of quantum defect *** theoretical results for heliumlike iron are in good agreement with the experimental measurements.

关键词： theory. simplified conveniently

Simulation of Hydrogen Emission Spectrum in Debye Plasmas

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Chinese Physics Letters 2011年第5期28卷 84-87页

作者： DING Qi-Yong ZHANG Song-Bin wang jian-guo The Key Laboratory of Computational Physics Institute of Applied Physics and Computational MathematicsP.O.Box 8009Beijing 100088 Graduate School of China Academy of Engineering Physics P.O.Box 2101Beijing 100088 Hefei National Laboratory for Physical Sciences at Microscale and Department of Modern Physics University of Science and Technology of ChinaHefei 230026

We investigate the screening effects on the spectrum of spontaneous radiation and radiative recombination to the 1s,2s and 2p states of hydrogen with total atom density N=1.7×10^(19)cm^(-3)and electron temperatures 1eV,2eV and 5eV under the local thermodynamic equilibrium(LTE)*** needed atomic energy levels,the radiative transition probabilities and radiative recombination cross sections are calculated by solving the Schr(o)dinger equation numerically incorporating the Debye-Hückel model in *** plasma emission spectrum is simulated for the first time by using the screened atomic *** red shift and the cutoff of Rydberg spectra are observed and it is also found that the 2 eV electron temperature case has the strongest screening effects and the emission spectra to the 2s and 2p states are more likely affected by screening effects than that of the ls state.

关键词： Debye radiative spectrum

Channel Dependence of Dielectronic Recombination Rate Coefficients of Fe^(25+) Ion

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Chinese Physics Letters 1998年第4期15卷 263-265页

作者： DONG Chen-zhong wang jian-guo QU Yi-zhi Department of Physics Northwest Normal UniversityLanzhou 730070 Institute of Applied Physics and Computational Mathematics Beijing 100088 Graduate School of University of Science and Technology of China Beijing 100039

In the frame of quantum defect theory,the state-testate dielectronic recombination rate coefficients of Fe^(25+) ion are calculated by a simple relativistic configuration interaction *** calculated results are further expressed with a two-parameter fitting formula,and then the dependence of fitting parameters on radiative decay final channel is studied.

关键词： method decay radiative

Synthesis, Crystal Structure and Biological Activity of 2-Chloro-N-{2-fluoro-5-[N-(phenylsulfonyl) phenyl-sulfonamido]phenyl}benzamide

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Chemical Research in Chinese Universities 2008年第3期24卷 295-298页

作者： LI Wen-ming wang jian-guo LI Zheng-ming SONG Hai-bin Elemento-Organic Chemistry Institute State Key Laboratory of Elemento-Organic Chemistry National Pesticide Engineering Research Center Nankai University Tianjin 300071 P R. China

2-Chloro-N-{2-fluoro-5-[N-（phenylsulfonyl）phenylsulfonamido]phenyl}benzamide was synthesized and its crystal structure was also determined by X-ray single-crystal diffraction. The title compound（C25H18ClFN2O5S2） belongs to monoclinic, space group P21/n with a=0.7377（3） nm, b=1.2036（5） nm, c=2.6846（11） nm, β=90.895（9）°, V=2.3833（16） nm3, Mr=544.98, Z=4, Dc=1.519 g/cm3, μ=0.385 mm–1, F（000）=1120, R1=0.0632, and wR2=0.1438. Its crystal structure belongs to a novel class that has not been reported yet, and its preliminary herbicidal activity was also tested. Its inhibition rate to seedling growth of barnyard grass reaches 15.1% at 100 μg/mL.

关键词： X-ray diffraction Crystal structure Synthesis Biological activity

Cloning, Expression and Characterization of Translationally Controlled Tumor Protein (TCTP) Gene from Flatfish Turbot (Scophthalmus maximus)

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Journal of Ocean University of China 2008年第2期7卷 184-192页

作者： wang jian guo Huarong ZHANG Shicui YIN Licheng guo Bin wang Shaojie College of Marine Life Sciences Ocean University of China Qingdao 266003 P. R. China

A full-length cDNA encoding translationally controlled tumor protein of marine flatfish turbot （Scophthalmus maximus）, SmTCTP, was isolated with rapid amplification of cDNA Ends （RACE）. SmTCTP consisted of a 5＇ untranslated region （UTR） of 84 bp, a 3＇ UTR of 451 bp and an open reading frame （ORF） of 513 bp, encoding a protein of 170 amino acid residues, which contained two signature sequences of TCTP family. The 5＇UTR of SmTCTP started with a 5＇-terminal oligopyrimidine tract （5＇-TOP）, a typical feature for translationally controlled mRNAs. The deduced amino acid sequence of SmTCTP was similar to the other known vertebrate TCTPs in a range of 58.8% to 64.1%. The length of fish TCTPs was diverse among species, e.g., TCTP of turbot and sea perch （Lateolabraxjaponicus） is 170 aa in length, while that of zebrafish （Danio rerio） and rohu （Labeo rohita） is 171 aa in length. Northern blot analysis revealed that SmTCTP has only one type of mRNA. Its expression level in albino skin was slightly higher than that in normal skin. We constructed the pET3Oa-SmTCTP expression plasmid. The recombinant protein of His-tag SmTCTP was over-expressed in E. coli, purified and identified with peptide mass fingerprinting. These results may pave the way of further investigation of the biological function of TCTP in fish.

关键词： translationally controlled tumor protein (TCTP) turbot RACE Northern blot expression peptide mass fingerprinting