Tautomerism

Study on the Tautomerism of β - Keto Esters by Gas Chromatography

气相色谱研究β-二酮酯化合物的互变异构

Azo-Hydrazone Tautomerism and Its Prediction in Dye - molecular Designing

偶氮&腙体互变异构及其在染料分子设计中的预报

The Content Analysis of The Enol Form Tautomerism

烯醇式互变异构体的含量分析

The starting temperature of valence tautomerism is about 300 K.

自旋交叉和价态互变的相变起始温度约300K。

Theoretical Studies on Energetic Properties of Nitrogen Heterocyclic Compounds and Tautomerism of Cyameluric Acid

氮杂环含能性质及CyameluricAcid异构化的理论研究

Computation researches of molecular simulation on the principle of producing tautomerism tio_2 nanometer crystal in hydrolytic-hydrothermal system

水解-水热体系中同质异构TiO2纳米晶生成机理的分子模拟研究

Effect of Ethanol on the Tautomerism of Ethyl Acetoacetate in Supercritical Co_2

乙醇对超临界CO2中乙酰乙酸乙酯异构化平衡的影响

Quantum Chemical Studies on Tautomerism of Tetrazole

四唑异构体异构反应的量子化学研究

Theoretical Study on the Tautomerism of 1-3H Atom Transformation Reactions at the 3 N System Substituted by Halogen

卤取代对三氮系1-3H原子转移互变异构影响的理论研究

Ab initio Calculation and Monte Carlo Simulation on Tautomerism and Proton Transfer of 2-Hydroxyimidazole in Gas Phase and Water

2-羟基咪唑在气相和水中的异构平衡和质子迁移的从头算计算和MonteCarlo模拟

Study on quantum chemistry of nitroalkane tautomerism

硝基烷烃互变异构的量子化学研究

The states of active hydrogens , the hindered rotation within molecules and the kinetic phenomena of tautomerism have also been discussed .

还对分子内的受阻旋转、活泼氢状态以及互变异构体的动力学现象作了讨论。

And it is ascertained that there exists the tautomerism of in it .

确定其存在着互变异构。

But the tautomerism of these activity thio derivatives molecular can exist in biology systems and the different tautomers have variable activity effects .

这些衍生物活性分子在生物体中存在着互变异构现象，不同的异构体有不同的生物活性，这些异构体的相对稳定性和异构体之间的相互转变对其性质具有重要的影响。

Stereochemistry of tautomerism ⅰ . studies on tautomeric equilibrium of alkyl malonic esters

互变异构的立体化学Ⅰ.烃基丙二酸酯的互变异构平衡的研究

Azo - hydr azo ne tautomerism of azo dye

偶氮染料的偶氮-醌腙互变异构

Progress in the Tautomerism and Decomposition of Amino-tetrazoles

氨基四唑化合物异构和分解反应的研究进展

Ketone - enol tautomerism was observed .

观测到了酮-烯醇互变异构现象。

Some molecular swich is using the tautomerism of molecular framwork , this sometimes is the tunneling effect of electron or proton or hydrogen atoms .

有的分子开关则是利用了分子的机构互变现象，而这往往也就是电子、质子、氢原子、甚至原子基团的隧穿现象。

Study on Intramolecular Hydrogen-Bonding and Keto-Enol Tautomerism of Some Asymmetrical β - Diketones by 1H NMR

不对称β-二酮分子内氢键及酮-烯醇互变异构的~1HNMR研究

INVESTIGATION OF HYDR AZO NE - AZO TAUTOMERISM OF PYRIDONE AZO DYESTUFFS I The Application of Nuclear Magnetic Resonance For Identification of the Configurations

吡啶酮系偶氮染料腙式偶氮式互变异构的研究Ⅰ核磁共振波谱在构型测定中的应用

The influence of tautomerism ( enol and keto ) of DKAs , molecular field , charge , alignment rules and other factors on the CoMFA model were considered .

在模型的构建过程中，考虑了二酮酸类化合物的互变异构现象（酮式和烯醇式）、分子场、电荷以及叠合方式等因素对CoMFA模型的影响。

The tautomerism of β - keto esters is a typical system of enol-keto tautomerism , which has been thoroughly studied in liquid phase , yet less in gas phase , for lacking of effective techniques .

β-二酮类化合物存在着互变异构现象，是典型的烯醇-酮互变体系。其溶液体系的互变现象研究得比较透彻，而气相体系由于缺少研究手段，这方面的报道很少。

The results indicated that the properties of tautomerism of DBM could be applied to characterize the microenvironment al property of organized media , reveal the structural characteristics of micelle , and determine the critical micelle concentration of surfactant .

结果表明，用二苯甲酰甲烷的酮醇互变异构性质能够表征有序介质的微环境性质，确定表面活性物质的临界胶束浓度。

Rules of wavelength and intensity of the fluorescence in different pH medium were discovered . The correlation between the protonation , tautomerism and luminescence characteristics of quinolone are studied . It is found that in pH 6-8 or 2-4 there are two luminescence species .

发现了在不同pH介质中喹诺酮类药物的荧光波长和荧光强度的变化规律，并对喹诺酮类药物质子化作用及互变异构现象与荧光性质的相关性进行了考察。

It has been pointed out that the phenomenon of colour-change caused by acid-base is due to the shift of equilibrium in hydrazone-azo tautomerism according to the influence of pH values upon 13C chemical shifts , 1H NMR spectra and UV-VIS absorption spectra .

从pH值对~（13）C化学位移的影响，~1HNMR谱和紫外-可见吸收光谱，指出这类染料的酸-碱变色现象是由腙式和偶氮式构型互变平衡的移动引起的。