1) Lewis acid strength
Lewis酸软硬度
2) hardness and softness of acids and bases
酸碱软硬度
1.
By theory of the hardness and softness of acids and bases on Lewis theory of acids and bases,it is used to explain different chemical behavoir such as isomorphism,symbiosis, and it is perfecting to evaluate and predetermine chemical reaction.
以Ｌｅｗｉｓ酸碱理论为基础发展起来的酸碱软硬度的理论广泛地应用于解释各类化学现象，包括类质同象置换，共生，应用于评价和预测化学反应极为简便和实用。
3) 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。
4) 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) hard-soft acid-base
硬软酸碱
1.
The synthetic explanation of nucleophiticity of diagent and catalyst selection in substitution reaction is discussed according to hard-soft acid-base theory Electrphitic reaction center of multifunctional group is determined.
从硬软酸碱理论出发对两可试剂的亲核性，取代反应中催化剂的选择性进行了综合的解释，指出了多官能团亲电反应中心，通过实例证明了离子型反应的选择性规律。
补充资料：腰膝酸软
腰膝酸软
自觉腰部与膝部酸软无力的症状。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条