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 … ...
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
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...
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。
The cis-trans isomer represents a type of steric isomerin which atoms have different spatial arrangements in threedimensional space. 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 ...
from bis(-ketoenamines), which have the cis arrangement of O and NH donors about each metal atom, two representative mononuclear complexes, Ni(acim)2 (acimH ± 4-amino-3-penten-2-one) and Ni-(bzacim)2 (bzacimH ± 3-amino-1-phenyl-2-buten-1-one), are produced as trans isomers....
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...
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 ...
Menaquinone 4-d7 (Mixture of cis-trans isomers) Menaquinone 4-d7 (Mixture of cis-trans isomers) CAS:1233937-25-1 纯度: 分子式:C31H33D7O2 分子量:451.69 保存:-20°C 外观:\N 品牌:源叶 货号:B72341-0.25mg 产品包装:0.25mg 上海源叶生物科技有限公司(Shanghai yuanye Bio-Technology Co., Ltd...
1)cis-trans isomer顺反异构体 1.This article summarizes the difference of pyrethroid isomers in degradation and chiral stability from aspects as cis-trans isomers and optical isomers.从顺反异构体、光学异构体两方面对拟除虫菊酯异构体的降解差异及稳定性差异进行了综述。 英文短句/例句 1.Separation and ...