缬氨醇衍生的手性二茂铁亚胺环钯化合物的合成及晶体结构

含氮配位基团的二茂铁衍生物的环钯化合物在有机合成、催化等领或有着重要的应用，尽管目前已经合成了从多的二茂铁环钯化合物，但其中绝大部分为外消旋体。二茂铁是引入平面手性的理想骨架，通过经典的拆分方法或利用光学纯的二茂铁配体进行不对称环钯化反应可得到具有平面手性的二茂铁环钯化合物，研究发现，利用平面手性的二茂铁环钯化合物与金属汞嘲、锡等的金属转移反应可方便地制备平面构型保持的手性环汞、环锡化合物；还可将它们用于外消旋氨基酸的手性拆分及催化不对称Claisen重排反应（ee值最高可达95％）。     

Synthesis and Magnetism of 2-Hydroxy-1,3-propylene-bis(oxamato)-bridged Co~ⅡCu~ⅡCo~Ⅱ Complexes

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芳香PET树脂母粒的研制

通过丙烯酸和丙烯酸正丁酯溶液共聚合，得到丙烯酸－丙烯酸正丁酯共聚物，该树脂与环氧氯丙烷反应后再与PET树脂切片继续反应，可使PET树脂切片表面形成聚丙烯酸酯自膨润型吸油网络结构，将表面具有聚丙烯酸酯自身膨润型吸油网络结构的PET树脂切片（简称为留香剂）在油溶性香精中浸泡，香精就被吸附在留香剂表面，即得到芳香PET树脂母粒。用SEM观察了母粒的表面结构形态。     

The electrooxidation behavior of bilirubin in DMF and DMF + H_2O mixed solvent

The electrooxidation of Bilirubin (BR) in N,N'-dimethylformamide (DMF) and DMF + H_2O mixed solvent is investigated by voltammetry techniques, in situ rapid scan thin layer spectroelectrochemistry and in situ ESR spectroscopy. The data reveal that the oxidation process of BR undergoes many stages, which are all sped up by the introduction of water. The species of bilirubin taking part in the reaction is found to be changed from BR in DMF into BR' in the mixed solvents and the anodic peak potential is shifted correspondingly from +0.58 V to +0.026-+0.35 V (vs. Ag/AgCl, 1.0 M KCl). Free radicals and the dimerization of them are observed during the oxidation.     

N,N'-二(二乙氧基硫代磷酰基)-1,4-苯二胺的合成、晶体结构及热性能研究

通过二乙氧基硫代磷酰氯与对苯二胺反应生成了标题化合物N,N'-二(二乙氧基硫代磷酰基)-1,4-苯二胺，并应用元素分析, FTIR及¹H NMR对标题化合物进行了表征. 利用X射线单晶衍射测定了其晶体结构, 同时应用TG分析法对其热性能进行了分析. 标题化合物的相对分子质量M_r＝412.42, 为正交晶系, Pbca空间群, 晶胞参数为a＝0.86936(16) nm, b＝1.2787(2) nm, c＝1.8897(3) nm, β＝90°, V＝2.1006(7) nm³, Z＝8, D_c＝1.304 g/cm³, μ(Mo Kα)＝0.425 mm^－1, F(000)＝872, S＝1.052. 最终偏离因子R＝0.0628, wR＝0.1860, 可观测衍射点1852个[I＞2σ(I)]. 该晶体通过对苯二胺连接并以中心对称分布, 并形成层状结构, 且存在弱的分子内氢键N—H…S. TG分析表明该化合物有很好的热稳定性及成炭性, 通过其阻燃聚丙烯腈表明, 该物质是一种高效能的膨胀型阻燃剂.     

ANPZ的合成及ANPZ·DMSO(1∶1)晶体结构

富氮杂环化合物被认为是理想的高威力含能材料,因为这些化合物大多具有高的分子密度、低易损性和正的生成焓[1]。2,6-二氨基-3,5-二硝基吡嗪(ANPZ)是一种富氮杂环含能材料,也是合成新型高能钝感含能材料2,6-二氨基-3,5-二硝基吡嗪-1-氧化物(LLM-105)的前体。美国DuPont公司的Do     

Synthesis,Structure and Adsorption of AlPO-21 Prepared by Co-template Method

IntroductionAlPO 2 1isatypeofmicroporousaluminophosphatepreparedbyFlanigenandco workersin 1982 ,andthestructurewasresolvedbySmithetal.1in 1984 .AlmostatthesametimePariseetal.2 preparedAlPO 2 1phasebyanotherrouteandresolvedthestructureindependently .Inthenextyear ,GaPO 2 1phasewasobtainedaswell.3Al thoughAl(Ga)PO 2 1phasespreparedindifferentwayspossesssimilarchannelsystem ,amongthemtherearestillsomedifferencesinlatticeconstants ,indicatingthatdiffer enttemplatemoleculescanaffectlocallythe…     

聚苯乙烯齐聚物的高效尺寸排除色谱的研究——Ⅰ.链长分布

 用高效尺寸排除色谱以紫外吸收光度计寿检测器,测定了一个以正丁基锂引发的聚苯乙烯齐聚物的链长分布。讨论了端基对实验的紫外吸收响应以及理论的链长分布函数中各个半分散组分重量分数的影响。引进了一个端基改正因子以获得真实的重量链长分布。实验数据可以用两个Poisson分布的叠和精确描述。与单一Poisson分布的偏离相信是由于聚合反应物混合方式的变化所致。     

Efficient degradation of dye pollutants using dioxygen mediated by iron(Ⅱ) 2,2''-bipyridine loaded layered clay catalyst under visible irradiation

The organic-inorganic layered solid catalyst Fe(bpy)32+-laponite was able to photodegrade Rhodamine B (RhB) by activation of dioxygen under visible irradiation (λ＞420 nm), while the homogeneous aqueous solution Fe(bpy)32+ showed no photoactivity. The catalyst could be repeatedly used and retained its reactivity. The hybrid catalyst could be separated from the suspension by centrifugation or sedimentation. The TOC removal yield of RhB was measured. Reactive oxygen species (ROS) formed during degradation was detected by EPR. A possible mechanism was proposed on the basis of the experimental results.     

阻抑动力学光度法测定痕量铜

在pH 4.5的HAc-NaAc缓冲溶液中, 痕量铜对KBrO3氧化亮绿SF的褪色反应有明显的阻抑作用, 据此建立了测定痕量铜的新方法. 方法的线性范围为0.004～0.048 μg/mL, 检出限为8.63×10-4 μg/mL, 已用于人发中铜的测定.