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1)  Effect-site
效应位
2)  steric effect
位阻效应
1.
Taking advantage of the steric effect of nitrogen atoms in 2-methylpiperazine, selective monobenzoylate on the nitrogen atoms were investigated by five synthetic routes.
根据2-甲基哌嗪中N原子位阻效应的差异,研究了其选择性单酰化反应。
2.
Moreover,the steric effect and the regioselectivity in the synthetic process were also discussed.
本文先后经5步反应合成了新的荧光免疫试剂即标题化合物,并用NMR、IR、MS和EA表征了产物及部分中间体的结构,并对合成过程中的位阻效应及区域选择性进行了讨论。
3)  Orientation effect
定位效应
1.
Studies on using of quantum chemistry the orientation effect of benzene;
苯取代定位效应的量子化学研究
2.
Theory explanation of the orientation effect of substitutes on Benzene by geminate motion viewpoint of excited π electron;
运用激发态时π电子成对运动观点对苯环取代基定位效应的理论解释
3.
Density functional theory study on the orientation effect of methyl;
甲基定位效应的密度泛函理论研究
4)  coordination effect
配位效应
1.
Synergetic coprecipitation effect and coordination effect in the Co-dump coprecipitation process for synthesizing Co-Ti substituted barium M-type ferrite;
并加共沉淀法合成钴钛取代M型钡铁氧体中的协同共沉淀效应和配位效应
2.
According to teaching practice of weight analysis of analysis chemistry,the influences that identical ionic effect and coordination effect on deposition solubility were discussed,and the calculating formula for the best concentration of precipitator to make precipitation complete was deduced in the article.
根据分析化学理论课重量分析一章的教学实践,讨论同离子效应和配位效应同时存在时对沉淀溶解度的影响,推导出要使沉淀反应完全,沉淀剂最佳浓度的计算公式。
5)  position effect
位置效应
1.
A study of the position effect in cold bending test of hot rolled ribbed bar;
热轧带肋钢筋冷弯试验位置效应的研究
2.
Research of hormone,age and position effect of hardwood cutting in Picea crassifolia Kom;
青海云杉硬枝扦插的激素、年龄和位置效应研究
6)  directing effect
定位效应
1.
A study of the directing effect of substituents;
芳环上取代基定位效应的研究
2.
Taking σ complex as the respect of study, the directing effect of chloromethyl have been discussed.
对一氯甲基的定位效应进行了剖
3.
The determining factor of the directing effect of the group is the relative stability of α - complex in foe electrophilic substitution of monosubstituted - benzene.
在一取代苯所发生的亲电取代反应中,σ-络合物的相对稳定性大小决定着定位作用,以σ-络合物为研究对象,卤素等定位基的定位效应便可得到合理的解释。
补充资料:配位体对位效应
分子式:
CAS号:

性质:又称配位体对位效应。在过渡金属络合物中,配位体与中心金属以及诸配位体之间都是相互影响的。如配位体L与X在络合物中五相处于反应(即对位),当配位体X被另一基团取代或进行同位素交换反应时,处于X对位的配位体L对上述取代或同位素交换反应时,处于X对位的配位体L对上述取代同位素交换反应的速度有一定影响,这种影响称为配位体反应效应。如X能被更快速取代,是称配位体L具有强反应效应。

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