Results 201 to 210 of about 210,013 (270)

Alkali metal cation effects for rapid C-H activation by iron(0) complexes. [PDF]

Chem Sci
Hidalgo N, Southwell KW, Donnelly RS, Mercado BQ, Krajewski SM, Wang X, Holland PL.   +6 more
europepmc   +1 more source

Host-Guest Chemistry as a Supramolecular Engine for Iontronic Transduction in Nanochannels. [PDF]

Molecules
Hernández Parra LM, Huamani AL, Matelo IT, Cortez ML, Rafti M, Laucirica G, Marmisollé W, Azzaroni O.   +7 more
europepmc   +1 more source

Adaptive Zinc-Amide Catalysis Enables C(sp²)-O Cross-Coupling of Aryl Fluorides with Alcohols. [PDF]

JACS Au
Manna S, Kavil NS, Rit A.
europepmc   +1 more source

Advances in Materials for Strontium-Yttrium Separation: A Comprehensive Review. [PDF]

Materials (Basel)
Xu M, Wang Z, Zhang T, Ma S, Zhao S, Zhao Y, Chen Y.   +6 more
europepmc   +1 more source

Cation encapsulation modulates oxygen atom transfer in O₂-reducing Fe(ii) fluorinated alkoxide complexes.

Inorg Chem Front
Bussiere MM, Toubiana Gilman LA, Rheingold AL, Bacon JW, Doerrer LH.   +4 more
europepmc   +1 more source

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Crown ethers in hydrogenated graphene

Physical Chemistry Chemical Physics, 2021
Graphane could serve as an ideal platform to rigidify the highly flexible crown ethers, which will greatly improve the binding strength and selectivity of crown ethers with metal cations and open up new applications for crown ethers and graphane.
Kai Guo, Sitong Liu, Haoming Tu, Zhikun Wang, Liang Chen, Haiqing Lin, Maosheng Miao, Jing Xu, Wei Liu   +8 more
openaire   +2 more sources

Crown Ethers: Novel Permeability Enhancers for Ocular Drug Delivery? [PDF]

Molecular Pharmaceutics, 2017
Crown ethers are cyclic molecules consisting of a ring containing several ether groups. The most common and important members of this series are 12-crown-4 (12C4), 15-crown-5 (15C5), and 18-crown-6 (18C6).
Rouslan Moustafine, Peter Morrison, Natalia Porfiryeva   +2 more
exaly   +2 more sources

UNSATURATED CROWN ETHERS: STILBENO-CROWN ETHERS

Chemistry Letters, 1982
Abstract Stilbenocrown ethers 3a,c and 4a,b were synthesized in a cyclization reaction of benzoin with oligoethylene glycol ditosylates(2a-c) under a phase-transfer condition. Extractions of aqueous alkali picrates(Na+–Cs+) were examined with the distilbenocrown ethers 4a,b, the partially-hydrogenated tetraphenylcrown ethers 6a,b and the
Yoshihisa Inoue, Mikio Ouchi, Toshiyo Nakazato, Takashi Matsuda, Tadao Hakushi   +4 more
openaire   +1 more source

From Crown Ethers to Zeolites: Reaction of EtAlCl2 with Crown Ethers

Journal of Inclusion Phenomena, 1984
In contrast to aluminum alkyls, alkyl aluminum halides such as EtAlCl2 react with crown ethers to form cation-anion pairs which exhibit the liquid clathrate effect. Specifically, [12-C-4-·AlCl2][AlCl3Et] and [18-C-6·AlCl2][AlCl3Et] have been isolated and characterized by X-ray diffraction techniques.
Jerry L. Atwood, Hosny Elgamal, Gregory H. Robinson, Simon G. Bott, James A. Weeks, William E. Hunter   +5 more
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Diaza-crown ethers—VI

Tetrahedron, 1980
Abstract The stability constants for the 1:1 complexes of 1,7,10,16-tetraoxa-4, 13-diazacyclooctadecane and 4,7,13,16,21,24-hexaoxa-1, 10-diazabicyclo[8,8,8]hexacosane with Na+, K+, Rb+ and Cs+ have been determined in acetonitrile at 25.0°C by conductivity measurements. The stability constants are considerably higher, and the selectivity is different,
S. Kulstad, L.Å. Malmsten
openaire   +1 more source