Cryptands翻译

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August undefined, 2024

WebThe cryptands are three-dimensional, cation-enveloping host compounds that normally contain nitrogen and oxygen donors but may contain sulfur or other heteroatoms as well. … WebOct 27, 2024 · # Cryptands# application of Cryptands#structure of Cryptands# property of Cryptands# difference between crown ether and Cryptands

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WebSep 18, 2024 · 2. The Nobel Prize for Chemistry in 1987 was given to Donald J. Cram, Jean-Marie Lehn, and Charles J. Pedersen for their efforts in discovering and determining uses of cryptands and crown ethers. 3. They are exceptionally versatile in selectively bindig a range of metal ions and a varirety organic neutral and ionic species. Crown ethers are ... WebVerfahren nach Anspruch 7, dadurch gekennzeichnet, dass die Deprotonierung in Gegenwart von Kronenethern, Kryptanden, Podanden, Polyethern oder Aminen durchgeführt wird. Process according to Claim 7, characterized in that the deprotonation is carried out in the presence of crown ethers, cryptands, podands, polyethers or amines. … share tutorial spring hill tn

Cryptand - an overview ScienceDirect Topics

Webthe design, synthesis, and binding properties of the cryptands by J.-M. Lehn, J.-P. Sauvage, and B. Dietrich [5,6] further demonstrated the attractions and opportunities of complexation chemistry. Although we tried to interest grad-uate students in synthesizing chiral crown ethers from 1968 on, the efforts were WebThe cryptands have the same kind of properties as the crown ethers and the same uses. In general, they form much more strongly bound complexes and can be used to stabilize unusual ionic species. For example, it is possible to produce the negative Na− ion in the compound [(2,2,2)-cryptand-Na]+Na−, which is a gold-coloured crystalline ... share tutorial homework

Cryptand - Oxford Reference

Web快速翻译英语和 100 多种语言之间的字词和短语。 WebOct 26, 2011 · Crown ethers, cryptands and other compounds. 3.1 Introduction . There have be en a huge number of hydrocarbon rings synthesised, some of which have been . described in previous c hapters. pop mart azura animal fightingWebJun 8, 2010 · Cryptands including azacryptands play a crucial role in the synthesis of alkalide and electrides. 969 The first barium sodide [Ba{H 5 aza(2.2.2)crypt}] + Na − was … pop markings on ammo cans are required on all

"WebCryptands (from the Greek kryptós, meaning “hidden”) are compounds that can completely surround a cation with lone pairs of electrons on oxygen and nitrogen atoms (Figure 18.7.1b).The number in the name of the cryptand is the number of oxygen atoms in each strand of the molecule. Like crown ethers, cryptands can be used to prepare solutions … " - Cryptands翻译

Cryptands翻译

(PDF) Chapter 3 Crown Ethers, Cryptands and Other …

WebAs seen in Figure 14 the ellipsoidal cryptands may be prepared by the simultaneous formation of three bridges. This route has found limited use due to low yields but has been employed in the synthesis of some cryptands including the tris-pyridino system (36) 〈81TL3035〉 and bis-tren (18) 〈80UP52100〉.The presence of nitrogen bridgeheads … Web一站式科研服务平台. 学术工具. 文档翻译; 收录引证; 论文查重; 文档转换

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WebCryptands spherands Cross-fertilisation between the crown ethers (or, more generally, corands), cryptands, spherands and podands has produced an enormous range of … http://fanyi.youdao.com/

WebDec 1, 2004 · Cryptands find applications in many fascinating areas chemistry, biochemistry and material science due to their architectural and functional plasticity. This review discusses in detail different methods synthesis the recently reported cryptands and their applications, viz. in the recognition cations, anions and neutral molecules, as … Web翻译器. Translate texts with the world's best machine translation technology, developed by the creators of Linguee. 词典. Look up words and phrases in comprehensive, reliable …

Web搜狗翻译可支持中、英、法、日等50多种语言之间的互译功能，为您即时免费提供字词、短语、文本翻译服务。 WebUse Enter / Space to view and traverse through the list of languages

WebCryptands是一系列用于各种阳离子的合成双环和多环多齿配体。1987年的诺贝尔化学奖授予了DonaldJ.Cram、Jean-MarieLehn和CharlesJ.Pedersen，以表彰他们在发现和确定 …

WebCryptand definition: (chemistry) Any of a class of polycyclic compounds related to the crown ethers, having three chains attached at two nitrogen atoms. pop mart boxWebLes cryptands sont une famille de ligands synthétiques bicycliques ou polycycliques pour une sorte de cation. En 1987, le prix Nobel de chimie a été attribué à Donald J. Cram , … pop mart investor relationsWebcrypto翻译：加密货币（cryptocurrency 的缩写）, 加密（encryption 的缩写）, 隐藏的；秘密的。了解更多。 share tv free tvWeb2. Doc Translator使用强大的Google翻译功能来翻译文档。. 我们多此一举了？. Doc Translator依赖不断改进的 Google翻译服务能力，以此处理文档中的文本，并将其翻译成您所需要的语言。. 3. 已翻译的文本将被重新插入到文档中，并保持原始排版。. 无需再从文档 … pop mart brandWebLes cryptands sont une famille de ligands synthétiques bicycliques ou polycycliques pour une sorte de cation. En 1987, le prix Nobel de chimie a été attribué à Donald J. Cram, Jean-Marie Lehn, et Charles J. Pedersen pour leur travail sur les utilisations des cryptands et les éthers couronnes, ce qui a donné naissance au domaine de la ... share tv super whyWeb"cryptanoside" 中文翻译: [网络] 密码子 "cryptanalyticss" 中文翻译: cryptanalytics ; [,krit?n?'litiks] ; n. ; [复数,动词用单数] =cryptanalysis "cryptantha" 中文翻译: [网络] 冰片 … share tweet donateWebJul 4, 2024 · Texas A&M University-Commerce. The key difference between crown ethers and cryptands is that crown ethers are cyclic structures containing ether groups, whereas cryptands are either cyclic or non ... share tweet email