solvent effect

1~ h NMR studies of solvent effect on keto-enol tautomeric equilibrium of β-dicarbonyl compounds

~H NMR法研究β-二羰基化合物的酮&烯醇互变异构体系的溶剂效应

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Quaternarization is an important SN 2 nucleophilic substitution reaction; solvent has remarkable effect on it.

季铵化反应是一类重要的SN2亲核取代反应, 溶剂对该反应的影响很显著.

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Gas Chromatographic Study of Solvent Effect of Vinyl Acetate in Asymmetric Hydroformylation

用气相色谱法研究乙酸乙烯酯不对称氢甲酰化反应中溶剂的影响

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The spectroscopic properties of HBQ and its derivatives were investigated. We have mainly focused our discussion on the substituent effect and solvent effect.

对10-羟基苯并喹啉及其衍生物的光谱性能进行了分析研究，重点考察取代基效应和溶剂效应。

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The influence of Electronic Effect, Three-dimensional Effect and Solvent Effect on Ultraviolet Spectrum

电子效应，空间效应，溶剂效应对紫外光谱的影响

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The pressure may not oversized, otherwise the solvent walks can decrease the separation effect too quickly.

压力不可过大, 不然溶剂走的太快就会减低分离效果.

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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。

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Catalyst acidity and hydrogen donating abilities of hydrocarbon solvent had marked effect on quinoline cracking.

催化剂的酸性、烃类溶剂的供氢能力对喹啉裂化有显著影响.

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The solvent effect has been considered by means of the conductor-like screening model ( COSMO ).

用类导体屏蔽模型 COSMO 方法考察了体系的溶剂效应.

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Solvent Effect on the Surface Morphology of SEBS/ PMMA Blend Films

溶剂对SEBS/PMMA共混物薄膜形态的影响

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A Study on the Electron Transfer of Dipeptide and Solvent Effect

二肽体系电子转移及溶剂效应的研究

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Studies on Polymeric Colourants Part ⅳ: The Solvent Effect of Polymeric Colourant Monomers

聚合色素的研究Ⅳ.偶氮型聚合色素单体的溶剂效应

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Study on Solvent Effect and Activation Thermodynamics of Saponification of Ethyl Benzoate

苯甲酸乙酯皂化反应的溶剂效应和活化热力学性质研究

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This article analyzed nucleophilic substitution mechanism of amidation reaction which was the key step in new process, the effect factors such as catalyst type, catalyst volume, solvent and temperature were also involved.

其中酰胺化反应是关键步骤，文章分析了该反应的亲核取代机理及催化剂种类、催化剂用量、溶剂、温度等条件对反应的影响。

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The solvent effect of anhydrous acetic acid was described in detail.

详细的分析了冰醋酸在重氮化反应中的溶剂效应。

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The effect of process conditions, such as microwave, reactant ratio, catalyst and solvent etc, on the nucleophilic substitution and yield of product were investigated.

考察了微波技术、反应物料比、催化剂以及溶剂等主要条件对亲核取代反应和产物收率的影响。

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These results are discussed in terms of steric effect and solvent effect.

我们从空间位阻和溶剂效应讨论了这些结果。

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As a solvent widely used in tannery industry, N, N-dimethylformamide ( DMF) has a bad effect on the treatment of tannery wastewater due to its poor biodegradation ability.

N，N二甲基甲酰胺（DMF）是制革生产中一种常用溶剂，由于DMF具有一定的生物毒性，当DMF进入废水生物处理系统后，会严重影响生物处理效果。

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Nucleophilic Substitution Reaction on the Porphyrin Ring: 2. The Solvent Effect in the Reaction of 2-NO_2-TPPCu(ⅱ) with Sodium Phenoxide

卟啉环上的亲核取代：2.溶剂对2-NO2-TPPCu（Ⅱ）与苯酚钠反应的影响

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Solvent effect and volume shrinkage ratio in melamine-formaldehyde gel aging process were discussed.

介绍了三聚氰胺 - 甲醛凝胶老化过程的溶剂效应及其对体积收缩的影响.

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Theoretical calculation has been performed for the solvent effect and charge-separated excited state between tetracyanoethylene ( TCEN) and tetramethylethylene ( TME) by use of the ab initio method at the level of HF/ 6-31++ G and CASSCF ( 8,8)/ 6-31G.

用从头算方法，在HF/6-31++G和CASSCF（8,8）/6-31G基组水平上对四氰基乙烯与四甲基乙烯间电子转移的溶剂效应及电荷分离激发态进行了理论计算与研究。

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The solvent effect is assessed by the CPCM method at the same level.

溶剂效应采用(CPCM)模式,在相同的方法与基组条件下模拟了该反应.

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