用该方法可以得到其他化学方法所得不到的同分异构物的定性定量分析结果。
Experimental results demonstrate that the dielectric analysis is a simple and effective method for qualitative and quantitative analysis of isomers, which is not possible with other chemical methods.
将化合物转化为其异构物,即重排分子结构而不改变分子大小或化学成分的炼厂工艺。
A refinery process for converting chemical compounds into their isomers, i. e. , rearranging the structure of the molecules without changing their size or chemical composition.
最常见的例子是有机化合物,亚硝酸盐类的同分异构体,其中一个碳原子以共价键与硝基中的氮原子结合。
The most common examples are organic compounds, isomers of nitrite esters in which a carbon atom is linked by a covalent bond to the nitro group's nitrogen atom.
可以使用立体选择或立体专一的合成方法,或者外消旋混合物的分离,来获得单独的光学异构体。
Use of stereoselective or stereospecific synthetic methods or separation of racemic mixtures can be used to obtain individual optical isomers.
辛烷一种具有这种分子式的同分异构的石蜡氢碳化合物,此式为c8h18,在石油中发现,用作燃料和溶剂。
Any of various isomeric paraffin hydrocarbons with the formula C8H18, found in petroleum and used as a fuel and solvent.
结论烯烃臭氧化物的形成及其臭氧链异构的反应历程,属游离基型的可能性更大。
Conclusion the form of the alkene ozone oxide and its reaction course of ozone chain isomerization are likely to be the free radical ones.
用数值方法研究了在具有光致异构非线性的聚合物中光学空间孤子的垂直全光调控。
In the photoisomerized polymer, the perpendicular and all-optical control of optical spatial soliton is simulated by numerical method.
实验发现,芪,1,4-二苯基1,3-丁二烯等多聚烯化合物的非共振双光子(NRTP)异构化强烈地依赖于光波长。
The efficiency of the non resonant two photon (NRTP) isomerizations of stilbenes and 1,4 diphenyl 1,3 butadienes was found to depend strongly on the wavelength of the laser pulses.
研究了在仲钼酸铵催化D-阿拉伯糖差向异构化为D-核糖的水相体系中,氯化物和硼酸助催化剂对反应的影响。
The effects of chloride and boric acid on the epimerization of D-arabinose to D-ribose in aqueous solution using ammonium paramolybdate as catalyst was studied.
氮基染料会发生光致羰基配合物异构化。
The azo-dyes perform an optically induced cis-trans isomerization.
本文给出了金刚烷及其异构体合成物系毛细管气相色谱及色谱-质谱联用分析方法。
This paper describes a capillary GC and GC-MS analytical method for the synthetic adamantane and its isomers.
在弱共价键化合物中,占据座位SAS(立体角系数扣)值最太的异构体有利于配体堆积。
In weak covalent compounds, the isomer with the maximum SAS (Solid Angle Factor Sum) of the ligand-occupied seats is more favourable for ligand packing.
该单核化合物是由钼原子配位于不同苯基的异构体组成的混合物。
This mononuclear complex was a mixture of isomers with molybdenum coordinated to different phenyl groups.
本发明的该配合物结构单一,不存在异构体,该配合物具有结构确定、易于分离等特点。
The coordination compound provided by the invention has a single structure without any isomer, and is characterized in defined structure and easy separation.
最后解释了生物标志化合物胆甾烷的立体同分异构体不同深度丰度变化的原因。
Finally, the reason for stereo-isomer variation of cholestane in different depths and abundances are explained.
我们把单齿配体配合物顺反异构体的定义推广到含两个二齿配体的配合物。
The definition of cis, trans-isomers for monodentate ligands has been extended to complexes containing two bidentate ligands.
对于双取代络合物ma4b2,其平面排列有三个异构体,常见的为有机化学中的邻位、间位和对位排列。
FOR a disubstituted complex, MA4B2, the planar arrangement gives three isomers, the familiar ortho, meta, and para arrangements of organic chemistry.
该体系中的偶氮聚合物在光诱导下发生顺反式异构形成与液晶分离的相光栅。
In this system, phase grating is formed after photoinduced trans-cis isomerization occurs on azo polymer and it separates with the liquid crystal.
不对称合成法:在化合物中形成两种不等数量的同分异构体的化学反应。
Asymmetric synthesis: Chemical reaction by which unequal amounts of two product isomers are formed.
依托泊苷能稳定酶催化性循环中的一种共价的拓扑异构酶ii裂解的DNA中间复合物,导致基因组不稳定性和细胞死亡(2,3)。
Etoposide stabilizes a covalent topoisomerase II-cleaved DNA intermediate complex in the catalytic cycle of the enzyme, leading to genomic instability and cell death (2, 3).
萘酚一种有机化合物,c10h7oh,存在于两种异构形式。
An organic compound, C10H7OH, occurring in two isomeric forms, alpha-naphthol and beta-naphthol.
六种有毒的同分异构体中的一种(CH3)2c6H3nh 2,由二甲苯制得,主要用于染料中间物。
Any of six toxic isomers, (CH3) 2c 6h 3nh 2, derived from xylene, used chiefly as dye intermediates.
对双(苯并唑)化合物在不同极性溶剂中的光谱、光物理及光顺反异构化问题进行了详细研究。
The problem of photophysics, spectrum and photo isomerization of bis(benzoxadyl) stilbene in different solvents were studied carefully.
根据同分异构的化学原理,有机物有相同的分子式和相同的官能团时,它们的化学性质和物理性质很相似。
According to the principle of isomeric chemistry, when organic substances have the same molecular formula and the same functional groups, their chemical and physical properties are very similar.
本文介绍了合成这类化合物的一些方法,尤其是选择性制备c 22r异构体的方法。
In this article, some methods to prepare this kind of compounds are described, especially the methods to selectively prepare the C22R epimer.
不对称合成是当代有机合成的热点,不对称催化方法是获取单一异构手性化合物最具有前景的方法之一。
Asymmetric synthesis is the hot point of organic synthesis in recent years. Asymmetric catalytic method is one of the most prospective methods to obtain pure chiral compounds.
乙醇分子复合物的互变异构能和孤立溶质分子的互变异构能结果很接近,表明溶剂分子参与反应并没有改变互变异构平衡。
The tautomeric energies of DHP(HMP)-ethanol clusters is close to that of the isolated solute molecule. It indicates that the solvent molecule have not changed the tautomeric equilibrium.
本文对部分化合物对映异构体的拆分机制进行了初步探讨。
Mechanisms of the resolution of some of the racemic compounds on these bounded phases were proposed.
以异构十三醇和氨气为原料,采用金属氧化物为催化剂合成了异构双十三胺。
Iso-ditridecylamine was synthesized by using iso-tridecanol and ammonia as raw materials and metal oxides as catalyst .
以异构十三醇和氨气为原料,采用金属氧化物为催化剂合成了异构双十三胺。
Iso-ditridecylamine was synthesized by using iso-tridecanol and ammonia as raw materials and metal oxides as catalyst .
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