Two crown ethers appear economically attractive: benzo-15-crown-5 and dicyclohexano-18-crown-6. ... Crown-ether enrichment using mixer-settler system appears best for larger-scale production such as envisaged for MSR fluorides ... or crown-ether separation. In China, SINAP has developed centrifugal extraction.. With mercury-based separation, Li-6 has a ... and either resin columns or a water-insoluble solvent containing the crown ethers is added to an aqueous mixture of lithium, ...

... crown ethers, and glycerol: Temperature, molecular weight, and hydrogen bond effect. J. Chem. Phys. 2015, 143, 124504. [Google ...

Ligands of interest are aromatic Schiffs bases, crown ethers, phthalamates and alkylamine dendrimers and their derivatives. ...

α-cyclofructin and 18-crown-6 ether, frontside view (3-OH and 4-OH groups). ... α-cyclofructin and 18-crown-6 ether, backside view (O5-C5-H5-fragments). ... and its back-bone derived 18-crown-6 ether skeleton (PIMM88 energy-optimized structure, right model, respectively) are compared ...

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Lariat ethers and podands, crown ethers, cryptands, calyx[n]arenes, cucurbit[n]urils, spherands; Selectivity of cation ...

Djalali, S.; Simón Marqués, P.; Frank, B. D.; Zeininger, L.: Crown ether-functionalized complex emulsions as an artificial ...

These metallamacrocycles can be thought of as inorganic analogs of crown ethers, organic compounds that bind metal ions in the ...

Then they label the unnatural base with a chemical called 18-crown-6 ether. which makes it easier to detect the site of DNA ... Fourth, another chemical label, named 18-crown-6 ether, is affixed to the unnatural base pair on all the DNA strands, which are ... are labeled again with a chemical named 18-crown-6 ether that basically makes the "knots" on the DNA "yarn" bigger and easier ...

Indigent Renown Might range the starry ether for a crown Equal to his deserts.... Komt voor in 82 boeken vanaf 1822-2006 ...

Ijeri VS, Srivastava AK (2001) The complexation behaviour of crown ethers with some divalent transition metal and silver ions ... Equilibrium and kinetic-studies on complex-formation reaction between crown ethers and bivalent transition-metal Ions. Bull ... Halime Z, Lachkar M, Toupet L, Coutsolelos AG, Boitrel B (2007) Coordination and structural studies of crowned-porphyrins. ...

Construction and Characterization of Indium Liquid Ion Selective Electrodes Based on Crown Ethers in a PVC Matrix Membrane. ... Spectrophotometric Study of the Interaction Between Aza-15-Crown-5 and Some \pi-Acceptors in Chloroform Solution. H. R. ... Extraction-Spectrophotometric Determination of Trace Amounts of Barium and Strontium by 18-Crown-6 and Rose Bengal Using ...

... a new approach to the rapid fluorination of organosilicon compounds for application in PET utilizing bifunctional crown ether ...

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A large number of crown ether compounds have been developed. Some of them are superior to naturally existing neutral carriers ...

2.Diaza-18-Crown-6]2+ - a Novel Aza Crown-Ether Stabilized Square-Pyramidal Coordination of Aluminum. Organometallics 1991, 10 ... Robinson, G. H. Structural Survey of the Organoaluminum Coordination Chemistry of Oxygen and Sulfur (Thia) Crown Ethers. ... Lee, B. ; Pennington, W. T. ; Robinson, G. H. Unusual Trigonal-Bipyramidal Coordination of Gallium by an Aza Crown Ether - ... Anen4 Aza Crown-Ether - Syntheses and Molecular-Structures of [M(Ch3)3]2[14]Anen4 (M = Al, Ga) and the Group-13 ...

Dansyl - Substituted Aza Crown Ethers: Complexation with Alkali, Alkaline Earth Metal Ions and Ammonium ... Solvent Extraction of Sodium Permanganate by Mono-benzo 3m-Crown-m Ethers (m = 5, 6) into 1,2-Dichloroethane and Nitrobenzene: ...

Then they label the unnatural base with a chemical called 18-crown-6 ether. which makes it easier to detect the site of DNA ... Fourth, another chemical label, named 18-crown-6 ether, is affixed to the unnatural base pair on all the DNA strands, which are ... are labeled again with a chemical named 18-crown-6 ether that basically makes the "knots" on the DNA "yarn" bigger and easier ...

SN1 for 3° and 2° carbons; SN2 for 1° carbons ...

Molecular recognition technology-Crown Ether bonded Silica particles (12um) for Radium isotopes 226 and 228. Capture the ...

Replacing the PFP with perfluoro-15-crown-5-ether (PFCE, boiling temperature of 146°C) as the core showed a good curative ... and Perfluoro-15-crown-5-ether (PFCE). PFCs are fluorinated compounds that have been used for many years in clinics mainly as ...

Sarah Weinstein Knowlton 96 wrote a chemistry thesis on "Lanthanide-Crown Ether Couples as Chiral NMR Shift Reagents." In ...

... crown ethers) slipped like sleeves onto the molecular "arms.". The torso, arms and sleeves were chemically outfitted to provide ...

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... hydroboryl anion reduction intermediate was successfully isolated using a crown ether. Overreduction of the diborene to its ...

Nigerian-born, Brooklyn-based artist Olalekan Jeyifous created Crown Ether, an un-occupiable home supported by a series of ...

A polymerization synthesis technique was used to form pseudocrown ethers (polymeric networks that contain crown ether-like ... The possible crown structures obtained from the monomeric poly(ethylene glycol 200) diacrylate were 21-pseudocrown-6 and/or 18- ... PSEUDOCROWN ETHERS AS FIXED SITE CARRIERS IN FACILITATED TRANSPORT MEMBRANES. Brian J. Elliott , W. Brinson Willis and ... The pseudocrown ethers were formed in situ during free radical photopolymerization of poly(ethylene glycol) diacrylates with ...

... the synthesis of corroles and aza-crown ethers, as well as methods for the total synthesis of monosugars. The institute ...

With this method the reaction time for labeling is dramatically reduced without catalyst such as crown ether. The reaction ...