吡啶

Study on the polymerization of 4 vinylpyridine was carried out with propionamide complex of neodymium chloride.

对氯化钕丙酰胺配合物与烷基铝组成的二元体系催化 4 乙烯吡啶极性单体聚合反应进行了研究，考察影响聚合反应的各种因素。

AIM To investigate whether dihydropyridine calcium antagonists can protect rats from nephrotoxicity induced by doxorubicin.

目的 观察二氢吡啶类钙拮抗剂对多柔比星肾毒性的影响。

In the reaction of NAE18 with nitrogen mustard aryl phosphorochloridate, 4-dimethylaminopyridine played critical catalytic action.

在合成工作中发现：在NAE18与氮芥芳基磷酰氯的反应过程中， 4-二甲氨基吡啶起着关键性的催化作用。

The tobacco-specific nitrosamine 4--1-(3-pyridyl)-1-butanol is present in the urine of tobacco users and, at lower concentrations, in the urine of nonsmokers exposed to secondhand smoke.

烟草特有的亚硝胺4--1-(3-吡啶)-1-丁醇存在于吸烟者和被动吸二手烟的非吸烟者人群的尿液中，只是被动吸二手烟的非吸烟者人群尿液中的浓度更小。

In 3 each zinc atom is coordinated by two tcm anions and two dpyam molecules to form a distorted octahedral geometry. Different from the former two complexes, 3 shows a mononuclear structure.

在3中每个锌与两个三氰基甲烷阴离子，两个2，2'-双吡啶胺分子相配位形成畸变八面体的空间结构。

Several transient compounds were synthesized by the homo- and heterogeneous reactions of reactive halogen compounds, In-situ ultraviolet photoelectron spectroscopy and photoionization mass spectroscopy as well as theoretical calculations were used to study their molecular structures, stability and molecular orbital properties, their electronic structures and geometric structures were obtained for the first time; Simultaneously, the electronic structure and thermal dissociation of acetyl peroxynitrate and trifluoroacetyl peroxynitrate which have great importance in the atmospheric chemistry were studied; The substituent effects of series of halopyridines and halothiophenes were studied by the ultraviolet photoelectron spectroscopy method for the first time. The atmospheric chemical reaction between peroxyacetyl radicals with IO radicals as well as the dissociation of the most stable isomer of CH3COIO3 were calculated by density functional theory, it was found that the CH3COOIO2 isomer may be act as a new reservoir of inorganic iodine in the stratosphere.

通过活性卤素的系列均相与非均相化学反应合成了几种瞬态物种，采用原位紫外光电子能谱和光电离质谱结合量子化学理论计算对化合物的分子结构、稳定性以及分子轨道特性进行了研究，首次获得了这些物种的电子结构和几何结构的信息；同时研究了大气中有重要作用的乙酰过氧硝酸酯和三氟乙酰过氧硝酸酯的电子结构性质及热解过程；采用紫外光电子能谱手段首次研究了系列卤代吡啶和噻吩的取代基效应；通过量子化学理论计算研究了乙酰基过氧自由基与IO自由基的大气化学反应及其最稳定异构体CH3COOIO2的解离，发现该物种可能是无机碘化合物在平流层中的储库物种。

In this thesis, studied the method that adoption air oxidize bandaging synthesize the smoke sour.

在本论文中，研究了采用空气氧化3—甲基吡啶的方法合成烟酸。

The acid property of zirconium oxychloride was characterized by means of DTA and FT-IR spectra of pyridine absorbed on the surface.

采用DTA和吸附吡啶的FT-IR表征氯氧化锆的表面酸性，用Hamm ett指示剂测定其酸强度，以催化合成环己酮2，3-丁二醇缩酮为探针反应优化缩酮反应条件，并考察它对其他缩酮反应的催化活性，比较了不同催化剂对缩酮活性的影响。

Using the method of tosylation, tosylate terminated epichlorohydrin polymer as intermediate was synthesized by PECH and 4-toluenesulfonylzchloride in pyridine,azido terminated glycidyl azide polymer was obtained by the reaction of intermediate and sodium azide.

采用磺酸酯法，首先PECH与对甲苯磺酰氯在吡啶介质中反应形成端磺酸酯基氯化聚醚中间体，然后中间体经叠氮化作用形成端基为叠氮基的叠氮缩水甘油醚聚合物。

In the crystal, the molecule is curved along the backbone as a result of a bend at the junction of the essentially linear 1,3-diethynylbicyclo[1.1.1]pentane and bipyridine units.

晶体中的分子是弯曲的沿骨干由于弯曲交界的基本上是线性1，3 - diethynylbicyclo [ 1.1.1 ]戊烷和联吡啶单位。

Neither the killing of Mr Zarqawi nor any breakthrough on the political front will stop the insurgency and the fratricidal murders in their tracks.

在对危险的南部地区访问时，他斥责什叶派民兵领导人对中央集权的挑衅行为。

In fact,I've got him on the satellite mobile right now.

实际上 我们已接通卫星可视电话了