crown ether वाक्य
उदाहरण वाक्य
मोबाइल
- Crown ethers strongly bind certain cations, forming denticity of the polyether influences the affinity of the crown ether for various cations.
- In particular, azobenzenes incorporated into crown ethers give switchable receptors and azobenzenes in monolayers can provide light-controlled changes in surface properties.
- PTs with pendant crown ether functionalities exhibit properties that vary with the alkali metal . and main-chain ( Figure 8 ).
- 18-Crown-6 has a high affinity for the hydronium ion H 3 O +, as it can fit inside the crown ether.
- A well known metal-templating was described by Charles Pederson in his synthesis of various crown ethers using metal cations as template.
- Is it ( theorically ) possible to form 3-D ether ( ? ) structures, just like Crown ethers are 2-D ones?
- Crown ethers strongly bind certain cations, forming denticity of the polyether influences the affinity of the crown ether for various cations.
- An example of this approach used bis-bipyridinium salts which form strong complexes threaded through crown ether bis ( " para "-phenylene )-34-crown-10.
- Their use of potassium hydride in the cation s corresponding crown ether quickly replaced thermal conditions as the default approach for most applications.
- If the Li + ions is complexed with the crown ether 12-crown-4, the resulting diorganylcuprate anions adopt a linear coordination geometry at copper.
- Initial work was done in ether, but this led to oxygen impurities, and so more recent work involves tertiary amines or nitrogen-substituted crown ethers.
- Schematic animation of the template-directed synthesis of the bis-bipyridinium cyclophane / " para "-phenylene crown ether [ 2 ] catenane described in the text.
- Potassium superoxide can be dissolved in dimethyl sulfoxide ( facilitated by crown ethers ) and is stable as long as protons are not available.
- In 1976, less than ten years after the discovery of crown ether, Cram et al . developed a functionalized binapthyl crown ether that catalyze transacylation.
- In 1976, less than ten years after the discovery of crown ether, Cram et al . developed a functionalized binapthyl crown ether that catalyze transacylation.
- The Tp, Tm, trithia-9-crown-3 ( a sulfur version of a small crown ether ) and cyclopentadienyl ( "'Cp "') ligands related ligands and form related complexes.
- Self-assembled molecules have an advantage over crown ether and cyclodextrin in that they can capture significant larger molecules or even two molecules at the same time.
- "' 12-Crown-4 "', also called 1, 4, 7, 10-tetraoxacyclododecane and lithium ionophore V, is a crown ether with the formula C 8 H 16 O 4.
- In 1980 Yamashita et al . construct a crown ether already incorporating the anthracene units ( an anthracenophane ) and also study ion uptake vs photochemistry.
- The crown ether binds the aminium ion so that the labile group ( in red ) is positioned next to the reactive group ( in blue ).
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