Results 11 to 20 of about 1,117,391 (197)
, 2016 Catalytic asymmetric aldol reactions in aqueous media have been developed using Pr(OTf)3 and chiral bis-pyridino-18-crown-6 1. In the asymmetric aldol reaction using rare earth metal triflates (RE(OTf)3) and 1, slight changes in the ionic diameters of ...
Motoo Shiro (1670407) +5 more
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Synthesis and Coordination Chemistry of Ligands for Supramolecular Chemistry and Sensing Applications [PDF]
A series of multidentate N-donor ligands have been synthesised all containing pyridyl and pyridyl/thiazole units and their coordination behaviour is described.
Clayton, Hayley J.
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Towards ionic channels with crown ethers and calix[n]arenes (with n=6,8) [PDF]
, 2006 This thesis reports the new crystal structures of crown ethers and calixarenes as well as the ionic conduction properties of crown ether channels. Chapter I gives general knowledge about ion channels.
Bergougnant, Remi
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Indonesian Journal of Chemistry, 2010 The aim of this research is to find information about the substituent effect to the structure of crown ether benzo-15-crown-5 (Bz15C5), dibenzo-16-crown-5 (DBz16C5) and dibenzo-18-crown-6 (DBz18C6), and also crown ether selectivity to coordinate a Li ...
Harno Dwi Pranowo, Chairil Anwar
doaj +1 more source
Photodissociation of non-covalent peptide-crown ether complexes [PDF]
Journal of the American Society for Mass Spectrometry, 2008 Highly chromogenic 18-crown-6-dipyrrolylquinoxaline coordinates primary amines of peptides, forming non-covalent complexes that can be transferred to the gas-phase by electrospray ionization. The appended chromogenic crown ether facilitates efficient energy transfer to the peptide upon ultraviolet irradiation in the gas phase, resulting in diagnostic ...
Wilson, Jeffrey J. +3 more
openaire +2 more sources
Applied Sciences, 2022 Cyclic organic compounds with several ether linkages in their structure are of much concern in our daily life applications. Crown ethers (CEs) are generally heterocyclic and extremely versatile compounds exhibiting higher binding affinity.
Faiz Ullah +10 more
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Small Crown-Ether Complexes as Molecular Models for Dihydrogen Adsorption in Undercoordinated Extraframework Cations in Zeolites [PDF]
, 2020 1:1 metal complexes of small crown-ethers are structurally similar to extraframework sites in metal-exchanged zeolites. Using ab initio calculations, we show that adsorbed molecular hydrogen follows the same trends in adsorption energies and vibrational ...
Thomas Heine (5709713) +3 more
core +1 more source
Molecules, 2009 The pH-profiles of the extraction of Cs+ into four conventional (1-butyl-3-methylimidazolium hexafluorophosphate and bis[trifluoromethyl)sulphonyl]imides of 1-butyl-3-methylimidazolium, 1-hexyl-3-methylimidazolium, and 1-(2-ethylhexyl)-3 ...
Igor Vladimirovich Pletnev +6 more
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مجلة علوم ذي قار, 2019 This research includes the synthesis and characterization of Shiff's bases crown ethers prepared from condensation between cis-diaminodibenzo-18-crown-6 and benzaldehyde substituted with some groups such as; 4-H , 4-CH2(CH2)6CH 3 , 4-Cl , 4-Br and 4-NO2
Raed A. Aubed
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Structural Study of Mismatched Disila-Crown Ether Complexes
Inorganics, 2017 Mismatched complexes of the alkali metals cations Li+ and Na+ were synthesized from 1,2-disila[18]crown-6 (1 and 2) and of K+ from 1,2,4,5-tetrasila[18]crown-6 (4).
Kirsten Reuter +3 more
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