substituent的例句大全

Studies of the effect of substituent on IHE tension of Tetrahedrane

四面体碳烷张力的取代基影响研究

Scheme 1 started from o-nitro ethylbenzene. It was actually a model study of Bamberger reaction to test the method for an extended Bamberger reaction to give 5-methoxy substituent.

路线一是从邻硝基乙苯出发、探索Bamberger反应的模型实验。

Solid-Phase Organic Synthesis of Heterocyclic Compounds Containing Bromo or Iodo Substituent Using Recyclable Polystyrene-Supported Selenium Bromide

可循环使用的聚苯乙烯负载硒溴试剂参与含溴（碘）取代的杂环化合物的固相有机合成

In order to improve the hole mobility of PT and lower the HOMO and broaden the absorption spectrum, a novel conjugated polymer, poly ( thienylene-vinylene-thienylene) with cyano substituent ( CN-PTVT) was synthesized.

为进一步有效地提高聚噻吩的空穴迁移率、降低聚合物的HOMO能级以及拓宽聚合物的吸收光谱，设计合成了一种新型的腈基取代的聚（噻吩-乙烯-噻吩）的聚合物CN-PTVT。

The conjugation between the isolated electron pair at N atom in CCN group and the π electrons on the aniline ring framework& n-π conjugation, and the electronic effect of the substituent in p-position of aniline ring are very subordinate factors.

CCN基团上N的孤电子对与苯胺环π电子的共轭nπ共轭，以及苯胺环对位上取代基的电子效应是很次要的因素。

A novel substituent descriptor based on the 17 different physicochemical parameters about the electronic, hydrophobic and steric properties of substituents is used to describe the chemical structures of 22 cyclic ureas and 22 N, N-dimethyl-2-bromo ( substituted phenyl) ethylamine derivatives, respectively.

把取代基电性、立体及疏水性物化参数组合建立一种新取代基描述方法，对环尿素类和N，N-二甲基-2-溴苯乙胺类衍生物进行结构表征。

Notes on the medium substituent test in tissue culture of sugar-cane

甘蔗组织培养育苗的培养基代用品试验

The corresponding aldehyde acetals were obtained in almost quantitative yields when alcohols were treated with aromatic aldehydes bearing an electron-withdrawing substituent such as a nitro group.

当强吸电子的芳香醛为底物如硝基取代的苯甲醛时，几乎定量给出相应的缩醛产物。

The results show that the potential of the oxidation peak of 1,4-DHP ( E_ ( pa)) becomes more positive, and the oxidation process is more difficult with an increase in the electron-attractive ability of the substituent at the C-4 position.

结果表明，1,4-DHP在GC电极上的氧化峰峰电位（EPa）随着C-4取代基的吸电子能力增强而升高，氧化反应越来越难进行。

The oxidation peak current of 1,4-DHP is decreased and the peak position is shifted to the positive direction when bound with CT DNA, while the degree of these phenomena is decreased with the increase of the steric hindrance of the substituent at the C-4 position.

1,4-DHP与ct DNA结合后，氧化峰峰电流降低和峰电位正移程度随着C-4取代基的空间位阻增大而减小。

Study on Substituent Effect of Ruthenium(ⅱ) Tris 1, 10 Phenanthroline Complexes by 13 C NMR Spectra

用~（13）C-NMR研究菲咯啉钌配合物的取代效应

This set of objective substituent constants can also be applied to aromatic nucleophilic substitution not any less adequately than that derived by J. Miller right from this very type of reactions.

这套客观的取代基常数用之于芳香亲核取代反应不比Miller从该反应系中求出的数值差。

An equation correlating the electronic transition energy with substituent and solvent effect in aromatic conjugated systems was derived on the basis of perturbation molecular orbital theory.

推导出芳香共轭体系的电子跃迁能与取代基效应以及溶剂效应之间的关系方程式。

The degree of branch structure is related to the ion-pair, which is the substituent group connected to N atom in alkyne, and the steric effect of the Lewis Base. The branch structure can be restrained by controlling the chain transfer reaction.

其支化程度与离子对的结构，即炔酰胺上N原子相连取代基和路易斯碱的位阻大小有关，可通过对链转移反应的抑制控制支化程度。

Effect of Substituent Groups on the Electronic Properties of a Molecular Wire

取代基对分子线电子性质的影响

The DFT Study of VO ( pa)_2 Complex and Substituent Effect on py

VO（pa）2配合物及py上取代基效应的DFT研究

H-Abstraction from p-Substituted Benzaldehydes by Bis-perfluoroalkyl Nitroxides ── A New Attempt for Establishing Substituent Constants of Spin Delocalization σ by EPR Method

双－全氟烷基氮氧自由基从取代苯甲醛的攫氢反应&用EPR方法建立取代基自旋离域参数σ的新尝试

The effect of substituent in acridine N-oxide on product distribution and the mechanism of photoinduced oxygen transfer from acridine N-oxide catalyzed by phthalocyanine iron(ⅱ) are briefly discussed.

比较了取代基性质对吖啶氮氧化物氧转移所生成的产物分布的影响，讨论了光催化氧转移反应机制。

these clusters show different fluxional behaviour and ligands according to various substituent around the metals of osmium.

根据羰基配体取代基的不同，该类簇合物中小分子的移动种类及方式也有所不同。

allenes are a class of compounds containing a cumulative diene functionality, which would be optically active when the two substituent groups on both of the terminal carbons of allene are different from each other.

联烯是一类含1,2-累积二烯官能团的化合物，其末端碳原子上取代基两两不同时就具有了轴手性。