查询词典 reagent

Grignard reagent with water, the reaction can be pure alkanes.

格氏试剂与水反应后可以得到纯的烷烃。

I-BuMgBr was the best Grignard reagent and its enantioselection was up to 94%.

其中，异丁基格氏试剂加成产物ee值最高，为94%。

To our present knowledge, only the solutions of derivatives of Grignard reagent RMgX in ether could be employed as the electrolyte.

镁负极由复杂的吸收过程控制，被吸收的组分主要取决于所用电解质。

Apprehend synthesis and reactions of organo-lithium and organo-magnesium compounds; grasp the applications of Grignard reagent and lithium dialkylcuprates.

掌握有机锂和有机镁化合物的合成和反应，格氏试剂的应用及烷基铜锂试剂的应用。

The polymerization of styrene were catalyzed by the schiff base metal complexes / Grignard Reagent catalytic system.

用合成出的西佛碱金属配合物与助催化剂格氏试剂组成催化体系，系统研究了这种新型催化体系对苯乙烯的催化聚合反应的规律。

0 G of cyclopentyl bromide and 19.4 g of magnesium are reacted in ether or THF to give a cyclopentyl Grignard reagent.

一百十九点零克的环戊基溴或溴环戊烷和十九点四克的镁在乙醚或四氢呋喃中产生反应，形成一个环戊格氏试剂。

Based on the colour reaction of copper with sulfocyanate and crystal violet, a new spectrphotometric method for determination of copper in the presence of β-cyclodextrin and arabic gum is proposed. The factors such as acidity, reagent dosage, influence of surfactant and coexisting ions on the reaction were discussed and the optimal conditions were investigated.

研究了在β-环糊精和阿拉伯树胶存在下，在硫酸介质中，硫氰酸盐－结晶紫与铜的显色反应，建立了光度法测定铜的新方法；讨论了酸度、显色剂用量、表面活性剂和共存离子的影响，确定了最佳实验条件。

This book is handpick 800 organic become famous reaction and 270 many become famous reagent and language of more than 2300 skeletonize and many 5400 relevant bibliographical reference.

本书精选了800个有机成名反应和270多个成名试剂及2300余条缩略语和5400多篇相关参考文献。

Objective: To investigate use of poloxamex of selfmade sheath reagent for fully automatic hemocyte analyzer.

目的：研究泊洛沙姆在SE9000全自动血液分析仪用自制鞘液中的应用。

The reaction of the hexyl hexylphosphonite is studied with some nucleophilic reagent s in the basicity and tetrachoromethane, and the mechanism of the reaction is discussed.

研究了正己亚膦酸正己酯在碱性条件下以四氯化碳为溶剂，与各种亲核试剂的反应情况。并对其反应机理进行了探讨

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。