最后估算了冠醚分子络合碱金属离子的结合能。
Thirdly, the binding energy of a crown-ether molecule complexing with an alkali-metal ion is estimated.
并讨论了苯环上不同取代基对冠醚环上各碳化学位移的影响。
The influences of benzine ring's different sub-stituets on the chemical shifts of crown's carbons are also discussed.
本论文主要包括以下三个部分的研究工作:冠醚型离子液体的合成。
This paper contains the following three part research work: Synethsis of crown ether-based ionic liquids.
图2锂-冠醚复合物优势构象的示意图(298.15K,气相)
Fig. 2 Optimized structures for Li+ complexes with substituted crown others (298.15 K, gas phase)
综述了液晶冠醚、碳纳米管、水溶性杯芳烃在分析化学中应用的新进展。
The recent progress of application of liquid crystalline crown ethers, carbon nanotube and water-soluble calixarene on analytical chemistry was reviewed.
概述了冠醚、冠醚高分子及环糊精高分子的性质和在环境科学中的应用现状。
And the properties and application in environmental science of crown ethers, polymerized crown ethers and Cyclodextrin Containing polymer were reviewed in this paper.
对近几年来的手性大环冠醚化合物的合成及应用研究进展作了较为全面的综述。
This is an overall review about the development of synthesis and applications of chiral crown ether compounds.
此外,还比较了几种不同冠醚与高氯酸镧在无水乙腈中配位反应的热力学性质。
Comparisons were also made on the thermodynamic properties for coordination reaction of lanthanum perchlorate with dibenzo-18-crown-6 and with other crowns in anhydrous acetonitrile, respectively.
在实验基础上提出了苯并氮杂冠醚化合物在氯仿中的叔胺-叔铵盐交换作用机制。
Based on experiments, a reaction mechanism for ce in CDCl_3 - "tertiary amine-tertiary amino salt exchange" was proposed, which has successfully explained the Dilution Shift Effect.
研究结果表明冠醚萃取中子活化法可较好地用于岩石和复杂体系中痕量铼的分离分析。
The results show that the crown ether extraction- neutron activation method can be satisfactorily applied to the separation and determination of trace rhenium in rock samples and complex systems.
如何设计对单一金属离子具有高选择性的冠醚,一直是人们所面临的具有挑战性的课题。
It is a challenge for people to design more highly selective crown ether for single metal ions.
结果表明,这类聚合物冠醚对钠、钾离子有很强的络合能力,并有良好的相转移催化活性。
It is shown that these polymers have very high complexing capacities with potassium and sodium ions and have good phase transfer catalysis activity.
本文综述了近年来杯芳冠醚的合成、构象固定、衍生化以及它们的性质等方面的研究进展。
This review describes the research progress of calixcrowns including their syntheses, conformation immobilization, derivatives and molecular recognition abilities.
本文设计合成了几种含邻菲咯啉的冠醚衍生物,并研究了它们与几种铵盐形成水凝胶的行为。
Several crown ether derivatives possessing phenanthroline groups were prepared and their gelation properties with ammonium were investigated.
综述了冠醚改性硅胶萃取分离金属离子的研究进展,对其制备、应用等也进行了详细的介绍。
This review deals with the progress in the studies of silica gel bound crown for extraction and separation of metal ions. The preparation, application and instrument are described in detail.
由于冠醚上引入苯甲酰胺取代基,因而对苯胺类及不经衍生化的碱性化合物能特殊选择性地分离。
Excellent selectivity was obtained for the separations of polar position isomers. The benzamide substituent group on crown ether makes the stationa…
杯芳烃作为继环糊精、冠醚之后的第三代大环类主体化合物,对金属离子具有较强的选择性萃取作用。
Calixarene is a kind of respecting host macrocyclic compound followed cyclodextrin and crown ether, and has strong ability of selective extraction of metal ions.
研究结果表明,选择性激发铕离子络合物中的蒽醌冠醚能发生分子内能量转移,观察到铕离子的发光。
Selective excitation of the anthraquione moiety intramolecular energy transfer from excitated anthraquione to Eu 3+ occurred, the luminescence of Eu 3+ was observed.
本论文主要研究了新型手性氮杂冠醚的合成,包括以下几方面内容:1、手性氮杂冠醚的合成与结构表征。
The dissertation mainly involves in synthesis of chiral aza crown ethers and includes the following aspects of content:1. Synthesis and structural characterization of chiral aza crown ethers.
表3具有不同官能团的苯并冠醚及相应的锂-冠醚配合物的结构参数计算值(298.15K,气相)
Table 3 Calculated values of geometrical parameters for benzo-crown ethers with different functional groups and their complexes with Li+ (298.15 K, gas phase)
本文研究了在苯乙烯不外加乳化剂的乳液聚合体系中,加入王冠醚18-冠-6对聚合反应及其产物的影响。
The emulsifier-f ree emulsion polymerization of styrene in the presence of 18-crown-6 has been studied.
实验结果表明,DCH18C6在水溶液中的溶解度不仅与溶液的酸度、含盐量有关,而且还与冠醚的形态有关。
The results show that the solubility of DCH18C6 in an aqueous solution depends not only upon the acidity, the salt content, and the temperature of the solution, but also upon its own existing form.
合成了一种新的双冠醚,氧化偶氮双苯并15 -冠- 5。初步探讨了它的光异构现象及其对稀土和碱金属离子的萃取能力。
Azoxybisbenzo-15-crown-5 was synthesized. Photoinduced trans-cis isomerization as well as its ability to extract alkali metals and rare earth metals' were dis-cussed.
研究了作为制备新型内硝基冠醚原料的中间体2-硝基-1,3-苯二酚(NB)及多甘醇双对甲苯磺酸酯(OEDT)的合成。
Synthesis of 2 nitro 1,3 benzenediol( NB) and oligoethyleneglycol ditosylate(OEDT) used as material for inner nitrocrown ether are studied.
本文从分子识别的角度,探讨了气相色谱学中超分子化学问题,并详细地评述了冠醚、液晶、环糊精固定液的分子识别机理的研究状况。
This paper gives a review of the aspects of supramolecular chemistry based on the molecular recognition mechanisms in gas chromatography with 55 references.
本文从分子识别的角度,探讨了气相色谱学中超分子化学问题,并详细地评述了冠醚、液晶、环糊精固定液的分子识别机理的研究状况。
This paper gives a review of the aspects of supramolecular chemistry based on the molecular recognition mechanisms in gas chromatography with 55 references.
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