合成2—芳氧基—5—氟—3H—4—嘧啶酮的新方法

由２－氰－５－氟－３Ｈ－４－嘧啶酮和取代苯酚钠在常压下反应，合成了７个未见文献报道的２－芳氧基－５－氟－３Ｈ－４－嘧啶酮化合物，产率７０￣８７％，结构经ＩＲ、＾１Ｈ ＮＭＲ和ＭＳ证实。     

Determination of V(V), Nb(V) and Ta(V) as their 2-(5-bromo-2-pyridylazo)-5-diethylaminophenol chelates by reversed-phase HPLC

This paper reports the separation and determination of V(V), Nb(V) and Ta(V) by RP-HPLC using 5-Br-PADAP as a precolumn derivatizing reagent. On C(18) column, the three metal chelates can be separated on a baseline in 9 min with the mobile phase of methanol-water (59:41, v/v) containing tartaric acid (0.2%) and acetate buffer (pH 3.5, 10 mM). The detection limits of V(V), Nb(V) and Ta(V) are 0.13 ppb, 0.22 ppb and 1.79 ppb, respectively when S/N is 3. This method is simple and rapid, and has been used in mineral analysis with satisfactory results.     

面向化妆品产业升级的江南大学应用化学专业建设思考与实践

Based on the development prospect of cosmetics industry, the advantage of light industry characteristic and the foundation of applied chemistry in Jiangnan University, a systematic upgrading of applied chemistry was carried out through "emerging engineering education (3E)" project "upgrade and practice of chemistry-related majors of local and/or trade university responding to the social developments" supported by the Ministry of Education. On the basis of investigation and analysis, the orientation and training goal of applied chemistry were updated first, and then the curriculum system was determined and the curriculum construction is strengthened, so as to achieve more distinctive characteristics, more solid foundation and more comprehensive quality. In view of the new requirements of the 3E for talent training, some practices have been formed in the aspects of multi-disciplinary integration, multi-angle coordination and close integration to industry. Contributing the development of cosmetics industry and seizing the commanding point of science and technology from the perspective of talent training, will play a unique role in human social progress.     

Rasch模型在“化学键”概念教学评价中的应用研究

运用Rasch模型探查高二学生对"化学键"概念的认知情况，运用Conquest软件和Winsteps软件对测试结果进行分析。结果表明：基于Rasch模型编制的测试卷能客观有效地检测学生对"化学键"概念的理解，为一线教师的有效教学提供学情基础。     

Enantioselective Addition of Iodine Azide to α,β-Unsaturated Carboxylic Acid Derivatives

The addition of iodine azide to chiral conjugated N-enoyl-sultam or α,β-unsaturated N-acyloxazolidinones generated two asymmetric centers at C(α) and C(β) with high π-face differentiation and regioselectivity. The diastereomerically pure product was easily obtained by crystallization with purity up to 94% de. The structure of 2a was determined by X-ray diffraction analysis which also indicated that B and 4 are reactive conformations.     

Photoassisted reaction of chemical warfare agent VX droplets under UV light irradiation

A photoassisted reaction of O-ethyl S-[2-(diisopropylamino) ethyl] methylphosphonothioate (VX) droplets in air was carried out. The experimental results indicated that VX droplets could be easily and chemically transformed into other compounds under irradiation of a germicidal lamp over sufficient time. Quantum chemical calculation results demonstrated that UV light less than 278 nm wavelength could possibly initiate photoreaction of VX and that both P-S and P=O bonds in the VX molecule were lengthened. The identification of reaction products by gas and liquid chromatography mass spectroscopy and NMR revealed that the VX molecule in air under UV light irradiation could undergo isomerization of S-esters to O-esters, cleavage of P-S, S-C, and C-N bonds, and ozonation of tertiary amines.     

Operation of a novel anaerobic biofilter for treating food-processing wastewater

Applied Biochemistry and Biotechnology - An anaerobic biofilter was operated with 4500 mg COD/L food-processing waste water, fed at 10 d of hydraulic retention time (HRT). In 45 d after seeding,...     

金刚烷甲酸稀土(Nd(Ⅲ), La(Ⅲ))配合物[LnL3(HL)(H2O)]2·2EtOH·2H2O的合成和晶体结构

合成了金刚烷甲酸与稀土Nd(Ⅲ)和La(Ⅲ)离子配合物, 并测定了配合物的晶体结构. 配合物的组成为[LnL3(HL)(H2O)]2·2EtOH·2H2O (Ln=Nd (1), La (2), HL=金刚烷甲酸). 配合物晶体均属三斜晶系, 空间群为P1, 晶胞参数 配合物(1) a=1.0556(2) nm, b=1.4913(3) nm, c=1.4920(3) nm , α=106.26(3)°, β=93.51(3)°, γ= 97.23(3)°, V=2.2253(5) nm3, Dcal=1.409 g·cm-3, Z=1, F(000)=990, μ(Mo Kα)=1.225 mm-1, Mr=1888.54. 配合物(2) a=1.0453(2) nm, b=1.4971(3) nm, c=1.5052(3) nm, α=106.07(3)°, β=93.58(3)°, γ=97.56(3)°, V=2.2391(5) nm3, Dcal=1.397 g·cm-3, Z=1, F(000)=984, μ(Mo Kα)=1.015 mm-1, Mr=1877.88. 两个配合物属异质同晶, 呈双核结构, Ln(Ⅲ)为九配位, 形成畸变三帽三棱柱配位多面体.     

二点滴定法研究

就二点滴定法的原理，方法和应用进行了讨论，导出了二点滴定法计算公式。讨论了滴定剂加入量与测定结果准确度的关系。已用本法对标样样液及试样进行了多次测定，测定结果相对误差及相对标准偏差约０．２％。本法简便，快速，准确，且昨达于任何滴定类型的通用方法。     

A Novel Octahedral Hexasilver(I) Cluster: Ag_6[SSCN(n-C_4H_9)_2]_6

ＣｏｍｐｏｕｎｄｓｆｏｒｍｅｄｆｒｏｍＣｕ ,ＡｇａｎｄＡｕｗｉｔｈｄｉｔｈｉｏ ｌａｔｅｌｉｇａｎｄｓ ,ｓｕｃｈａｓｔｈｅｄｉａｌｋｙｌｄｉｔｈｉｏｃａｒｂａｍａｔｅ (ＤＴＣ) ,ｍｅｒｃａｐｔｏｔｈｉａｚｏｌｉｎｅ (ＨＭＴ)ａｎｄｄｉａｌｋｙｌｄｉｔｈｉｏｐｈｏｓｐｈａｔｅｓ(ＤＤＰ) ,ｈａｖｅｐｌａｙｅｄａｎｉｍｐｏｒｔａｎｔｒｏｌｅｉｎｔｅｃｈｎｏｌｏｇｙ .1Ｃｕ(Ｉ) Ｓｃｌｕｓｔｅｒｓａｌｓｏｈａｖｅｂｅｅｎｉｍｐｌｉｃａｔｅｄｉｎｂｉｏｌｏｇｙａｓａｎ ｔｉ ｏｘｉｄａｎｔｓ .2Ｔｈｅｃｕｂａｎ…