1) chiral Lewis acids
手性Lewis酸
2) Lewis acidity
Lewis酸性
1.
Density functional theoretical calculations on BX 3 (X=F, Cl, Br) have been carried out at LDA/NL levels in order to interpret the experimental Lewis acidity scale for these molecules studied.
用密度泛函理论的 DFT-LDA/NL方法研究 BX3( X=F,Cl,Br)分子的 Lewis酸性 。
2.
In this paper, the Lewis acidity of Ti-containing MFI zeolite with Ti4+ ion located at different tetrahedral sites was studied using density functional theory and ONIOM2 method.
本论文应用密度泛函理论和量子力学与分子力学联合的ONIOM2方法对含Ti的MFI分子筛(TS-1)中Ti4+离子在三种不同骨架落位上所表现的Lewis酸性进行了理论研究。
3) surface Lewis acidity
表面Lewis酸性
4) Lewis acid
Lewis酸
1.
Rate enhancement in ligand-free palladium catalyzed Suzuki reaction by Lewis acid promoters;
Lewis酸促进无配体钯盐催化的Suzuki反应研究
2.
Metoprolol was synthesized with isopropylamine and 4-(2-methoxyethyl)phenyl glycidyl by different Lewis acid.
Lewis酸催化对甲氧乙基苯基缩水甘油醚与异丙胺的反应得到美托洛尔,考察不同的催化剂、反应温度、反应时间对反应的影响。
3.
The catalytic activities of Lewis acid,proton acid,inorganic anhydride,zeolite and montmorillonite were compared.
通过比较Lewis酸、质子酸、无机酸酐、分子筛、酸化蒙脱土在催化甘油与环己酮缩合反应中的活性,研究了催化剂结构和性质对环己酮转化率和反应选择性的影响。
5) Lewis acids
Lewis酸
1.
The activity of sulfate containing Lewis acids was moderate and the yield of butyl p-hydroxybenzoate was 68.
8%,具有Lewis酸性质的硫酸盐催化效果适中,酯化产率68。
6) Lewis acidic Mg(II) species
Lewis酸性的Mg(II)
补充资料:Lewis酸碱
1923年g.n.lewis提出酸碱电子理论,他对酸碱的定义为:
酸是在反应过程中能够接受电子对的物质,称为电子对接受体,简称受体;
碱是在反应过程中能够给出电子对的物质,称为电子对给予体,简称给体。
酸和碱的反应通过配位键生成酸碱络合物。
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