Synthesis and Inclusion Properties of thiacalix[4]arene tetraamides in cone- and 1,3-alternate conformation

2007 ◽  
Vol 2007 (10) ◽  
pp. 557-560 ◽  
Author(s):  
Shofiur Rahman ◽  
Nazneen Begum ◽  
Carol Pérez-Casas ◽  
Akina Yoshizawa ◽  
Takehiko Yamato
Keyword(s):  
Hydrogen Bonding ◽  
Solvent Extraction ◽  
Alkali Metal ◽  
Metal Cations ◽  
Intramolecular Hydrogen Bonding ◽  
Alkali Metal Cations ◽  
Two Phase ◽  
Inclusion Properties ◽  
Intramolecular Hydrogen

Novel thiacalix[4]arene tetraamides in cone- and 1,3- alternate conformation were prepared, in which the cone-tetraamide shows stronger intramolecular hydrogen bonding than 1,3- alternate-tetraamide. The two-phase solvent extraction data indicated that tetraamides show no extractability for alkali metal cations, but small extractability for dichromate anion (Cr2O72-).

Lariat ethers with a novel proton-ionizable group. Synthesis and solvent extraction of alkali metal cations

1997 ◽  
pp. 1499-1500 ◽  
Author(s):  
Vincent J. Huber ◽  
Sheryl N. Ivy ◽  
Jianping Lu ◽  
Richard A. Bartsch
Keyword(s):  
Solvent Extraction ◽  
Alkali Metal ◽  
Metal Cations ◽  
Alkali Metal Cations ◽  
Lariat Ethers

Selective Transport of Alkali Metal Cations in Solvent Extraction by Proton-Ionizable Dibenzocrown Ethers

1992 ◽  
Vol 27 (1-3) ◽  
pp. 75-85 ◽  
Author(s):  
Richard A. Bartsch ◽  
Il-Woo Yang ◽  
Eok-Giu Jeon ◽  
Wladyslaw Walkowiak ◽  
Witold A. Charewicz
Keyword(s):  
Solvent Extraction ◽  
Alkali Metal ◽  
Metal Cations ◽  
Alkali Metal Cations ◽  
Selective Transport ◽  
Dibenzocrown Ethers

Competitive solvent extraction of alkali metal cations into chloroform by lipophilic acyclic proton-ionizable polyethers

1992 ◽  
Vol 64 (15) ◽  
pp. 1685-1690 ◽  
Author(s):  
Wladyslaw. Walkowiak ◽  
Grace M. Ndip ◽  
Dhimant H. Desai ◽  
Han Koo. Lee ◽  
Richard A. Bartsch
Keyword(s):  
Solvent Extraction ◽  
Alkali Metal ◽  
Metal Cations ◽  
Alkali Metal Cations
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