顺反异构物(cis-trans isomers)又称几何异构物(geometric isomers,但此种说法已不被IUPAC取用),属於立体异构物(ste… case.ntu.edu.tw|基于40个网页 2. 顺反异构体 几何异构体又名顺反异构体(cis-trans isomers)在空间关系上不是镜像,而且理化性质不同,各基团之间的距离也不同,因而 … ...
1. 顺反异构 ... C2H5 ≡ H H C C C2H5 CH3 顺反异构 (cis,trans) 构型异构 对映异构 立体异构 R R C C H H R H C C H R RR HH H H RH HR 构…wenku.baidu.com|基于26个网页 例句 释义: 全部,顺-反的,顺反异构 更多例句筛选 1. Most cis-trans isomers are organic compounds. 大多...
The meaning of CIS-TRANS ISOMERISM is geometric isomerism in unsaturated compounds or cyclic compounds depending usually on the presence in the molecule of a pair of substituted groups (as unsymmetrically substituted methylene groups) so that the isomers
Indeed, where both cis and trans isomers are present in solution, the possibility has to be considered that the minor isomer, whether cis or trans, may be the bioactive conformation, with the conversion of one to the other upon receptor binding representing a slow but potentially significant ...
In the field of organic chemistry, cis isomerscontain functional groups on the same side of the carbon chainand trans isomers have functional groups on the opposite side.This type of isomerization can occur in both organic andinorganic molecules. Cis and trans isomers are possible only ifthe ...
反式更稳定，不是因为对称因素，很简单的理由：是因为顺式结构取代基的位阻（离得比较近）比反式的位阻高。
athere is some evidence that all-trans-isomers are absorbed preferentially by humans as compared to cis isomers in the case of β-carotene. 有一些证据所有trans异构体由人优先地吸收与同边异构体比较在β胡萝卜素情况下。[translate]
Cis-trans isomers belong to a class of stereoisomers known as diastereomers and are often referred to as geometric isomers, although this is an obsolete term. Cis-trans stereoisomers normally cannot be interconverted at room temperature, because to do so requires the breaking and reforming of che...
这是同边和转同质异能素,供应商可能提供大多数trans。 翻译结果5复制译文编辑译文朗读译文返回顶部 正在翻译,请等待... 相关内容 aThere are many diamonds produce from countries in Africa, but some people used these diamonds to buy a lot of guns and killed a lot of people. 有许多金刚石产物从国家...
2) cis and trans isomers 顺、反异构体 1. A method for separation and determinationcis and trans isomersof β -Carotene was developed by using a Zorbax ODS C 18 250×4. 6 m m 5 μm 色谱柱,流动相为甲醇∶乙腈∶石油醚(35∶55∶10),流速:1 m L/m in,检测波长:450 nm ,建立 R P- ...