吡啶

Other than conventional concept, the N→Rh bond, formed by rhodium in the complex and nitrogen at pyridine ring in the ligand, did not break in the course of the carbonylation reaction, but formed into new active species instead, i.e., the ligand and rhodium as a whole participated in the oxidative addition of CH3I and the formation of CH3COI.

配合物中铑与吡啶环上共轭N形成的N→Rh配键，在羰基化反应过程中并非通常认为的断裂而是形成新的活性物种，即配体与铑作为整体参与了CH3I的氧化加成及CH3COI的生成过程。

The results indicate that the weak election-withdrawing group 4-hydroxymethyl in 4-position of pyridine in 4-HMDPA could weaken the fluorescence intensity of the lanthanide complexes. The contradistinctive experimental results show that the fluorescence intensities of these complexes are related to pH value of the aqueous solution and the dipole moment of solvent molecule: in the neutral aqueous solution,the fluorescence intensities of these complexes were strongest,while the less the dipole moment was,the stronger the fluorescence intensity was.

结果表明，在吡啶4位引入弱吸电子基团4-羟甲基会减弱稀土配合物的荧光强度；在水溶液中稀土配合物与溶液的pH值有着密切的关联，中性水溶液中荧光强度较大；分子偶极矩较小的溶剂中稀土配合物荧光强度较强。

The experimental data demonstrated that the molar monomer (42VP)/ cross2linkerratiowasthemajorfactoraffectingtheadsorbent'scapacityfor PFOS; degree of polymerization , solvent/ water of the reaction mixture , type of organic solvent and cross2 linker affected its shape and specific surface area more significantly than its PFOS capacity.

研究结果表明：单体(42乙烯基吡啶)含量对吸附剂去除PFOS 的效果影响显著；而聚合状态、聚合液含水率、有机溶剂和交联剂的种类仅对吸附剂形态和比表面积有一定影响，但对吸附剂去除PFOS 的效果影响不大。

Interaction of Cucurbit [7] Uril with N,N'-Bisalkyl-1,3-(4,4-bispyridyl) Propanes

篇名 七元瓜环与N，N'-二烷基－1，3-（4，4'-二吡啶基）丙烷衍生物的相互作用

The interaction and the models of self-assembly psedorotaxanes of cucurbit [7] uril with these synthetic guests were investigated via 1H NMR technique and electronic absorption spectroscopy method.

利用1H NMR技术和紫外吸收光谱法，考察了Q[7]与上述链状吡啶衍生物的相互作用。

Employing dealkylation of cumene as the controlling reaction, the authors investigated the poisoning action of pyridine on a silica-alumina catalyst.

本文以异丙基苯的裂化作为控制反应，用动力学方法考察了硅铝催化剂为吡啶中毒的情况。

Bis（2; 2'-bipyridyl）monochloro cupper complex crystal structure

双（2； 2'-联吡啶）单氯合铜配合物；晶体结构

The complexation of Sc with eriochrome cyanine R and cetylpyridinium bromide were studied.

研究了微量钪埃铬菁R 溴化十六烷基吡啶之间的配合反应。

The results showed that there is a strong recognition action between the four substituted ureas and cytosine.

研究结果表明，四个2-吡啶脲基化合物对胞嘧啶分子均具有较强的识别作用。

The yields of the reactions in the presence of DCC and DMAP were higher than those in DCC and pyridine.

在DCC/DMAP体系中的反应产率大于在DCC/吡啶中的产率。

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