查询词典 lewis

The catalytic systems of Lewis acid and base are useful ways in the non-enzymatic catalysis. They were widely used to different kinds of kinetic resolution reactions.

在非酶催化反应中，路易斯酸碱催化是比较常用的方法，它们被广泛地用于多种外消旋体的动力学拆分反应中，目前在该领域取得了很大的进展。

In this reaction, DMSO may act as a Lewis base to activate the nucleophile, which facilitates the ring-opening reactions.

与此同时，我们还发现在DMSO中，无催化剂的中型条件下，硫，胺以及各类硅亲核试剂可以对氮杂环丙烷化合物开环。

In the Phenoxy/SAN blends, it has been demonstrated that the crosslinking has taken place for Phenoxy components, which was proposed that the reaction is catalyzed by the SAN component which acts as a Lewis base.

在逐步原位聚合的Phenoxy/SAN共混体系中，研究结果表明，由于SAN组分的存在，导致了Phenoxy自身凝胶的形成，这可以归结为SAN组分对DGEBA均聚反应的催化作用。

Symmetric Lewis base has the following problem in the application that the relatively high content of regulator will reduce the rate of polymerization and impact further polymerization as well as the coupling process after the polymerization.

对称型路易斯碱在应用中存在问题：较高调节剂含量将会降低聚合速率、影响进一步聚合以及聚合以后的偶联过程。

The Soft-Hard Acid-Base Theory was used to interpret the experimental results for the first time, the softness of sulfur, which was a Lewis base, was changed by solvents, and the reactivity of sulfur atom was changed.

结果表明，砷化镓表面硫化层厚度与所用溶液的极性有关，用极性小的有机醇作溶剂可以得到更厚的硫钝化层。

However, using tributylphosphine as a Lewis base and -1, 1'-bi-2-naphthol as a cocatalyst, the Baylis-Hillman reaction of arylaldehydes with cyclopent-1-en-one proceeded smoothly.

在本论文主要对磺酰亚胺和各种活化烯的aza-Baylis-Hillman反应以及它们的不对称aza-Baylis-Hillman反应进行了研究。

An ate complex is a salt formed by reaction of a Lewis acid with a base whereby the central atom increases its valence.

酸根型配合物是指路易斯酸與特定的鹼生成的中心原子價升高的鹽。

His predecessor, Kenneth Lewis, typically received a base salary of $1.5 million.

莫尼汉的工资为95万美元。其前任肯尼思。

Britain and the United States to produce aspects of the Lewis machine gun weight 26 pounds, slightly better mobility.

英美方面搞出的路易斯机枪重26磅，机动性稍微好一些。

This was fixed on a bracket clamped half-way up the barrel of a Lewis gun.

瞄准镜用一个支架固定在刘易斯机枪的枪管中间位置。

With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.

随着死亡的吉他手Schuldiner接受主唱的职务，乐队在现实中树立了重要的影响。

But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.

不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐，因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。