查询词典 Lewis base

Another is the Lewis definition (also 1923): An acid is a chemical that can accept an electron pair from a base, which they share to form a covalent bond.

另一种理论是路易斯理论(也是在1923年发表)：酸就是能由碱接受一个电子对形成一个共价键的化学物质。

The Lewis base property of MgO was studied quantitatively by infrared spectroscopy with boric acid trimethyl ester as the molecular probe.

采用硼酸三甲酯作为探针分子对MgO的路易斯碱性进行了红外光谱定量研究。

The RAF said two of its Tornado fighter jets from its base at Leuchars, on Scotland's east coast, were dispatched to tail the Russian Blackjacks as they approached the western Isle of Lewis.

皇家空军说，两台狂风战斗机从它们苏格兰东海岸的基地卢赫斯，被派往尾随俄罗斯海盗旗战机，当它们接近西部的刘易斯岛的时候。

Solid acid-base catalysts instead of liquid Bronsted and Lewis acid/base catalysts is one of the most important ways with the direction of the development of green chemistry.

而用固体酸碱代替液体酸碱催化有机反应是实现环境友好的一条重要途径，符合绿色化学的发展方向。

Recent progress in the applications of non-enzymatic system about Lewis acid and base tokinetic resolution reactions of racemes is reviewed.

本文讨论了路易斯酸及路易斯碱催化体系在外消旋体动力学拆分反应中应用的最新进展。

Mr. Lewis' base salary for 2009 is $1.5 million.

刘易斯2009年的基本工资是150万美元。

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。

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。

Since historical times,England ,where the early inhabitants were Celts, has been conquered three times .

从有历史以来，英国，在此地早期居住的是凯尔特人，已经被征服了三次。

Bluetooth OBEX File Transfer Enables the sending and receiving of files on your phone via Bluetooth.

蓝牙OBEX文件移动允许经过蓝牙传送和接受文件。。。。