Conductance and infrared studies on acetonitrile solutions containing crown ethers and alkali metal salts

1980 ◽  
Vol 84 (3) ◽  
pp. 309-314 ◽  
Author(s):  
Harry P. Hopkins ◽  
Alan B. Norman
Keyword(s):  
Alkali Metal ◽  
Crown Ethers ◽  
Metal Salts ◽  
Alkali Metal Salts ◽  
Infrared Studies ◽  
Acetonitrile Solutions

ANION EFFECT ON SELECTIVITY IN SOLVENT EXTRACTION OF ALKALI METAL SALTS BY CROWN ETHERS

1995 ◽  
Vol 13 (6) ◽  
pp. 983-995 ◽  
Author(s):  
Matthew G. Hankins ◽  
Richard A. Bartsch∗ ◽  
Uriel Olsher
Keyword(s):  
Solvent Extraction ◽  
Alkali Metal ◽  
Crown Ethers ◽  
Metal Salts ◽  
Alkali Metal Salts ◽  
Anion Effect

ChemInform Abstract: Synthesis and Structure of Alkali Metal Salts of N-Phosphorylated Amides and Thioamides and Their Complexes with Crown Ethers.

ChemInform ◽  
2010 ◽  
Vol 22 (33) ◽  
pp. no-no
Author(s):  
N. G. ZABIROV ◽  
F. M. SHAMSEVALEEV ◽  
V. A. SHCHERBAKOVA ◽  
R. A. CHERKASOV ◽  
V. N. SOLOV'EV ◽  
...  
Keyword(s):  
Alkali Metal ◽  
Crown Ethers ◽  
Metal Salts ◽  
Alkali Metal Salts

Extraction and transport of alkali metal salts by crown ethers and cryptands: estimation of extraction constants and their relationship to transport flux

1987 ◽  
Vol 65 (4) ◽  
pp. 884-891 ◽  
Author(s):  
Thomas Murray Fyles
Keyword(s):  
Free Energy ◽  
Alkali Metal ◽  
Crown Ethers ◽  
Extraction Constant ◽  
Metal Salts ◽  
Alkali Metal Salts ◽  
Two Phase ◽  
Extraction Constants ◽  
Polar Organic Solvent ◽  
Transport Flux

A method is described for the estimation of two phase extraction constants from stability constants for complexation of alkali metal cations by crown ethers and cryptands. The total free energy change for extraction of alkali metal salts from water to a non-polar organic solvent is evaluated as a sum of free energy terms for complexation, transfers of cation, anion, and complex between solvents, and ion pairing in the non-polar solvent. The method gives satisfactory agreement with a variety of published extraction constants and can be used predictively. As an example, the influence of extraction constant on transport flux was examined using calculated extraction constants and the rate data of Lamb etal. (J. Am. Chem. Soc. 102, 6820 (1980)); rates are adequately modelled by a simple analysis of diffusion.

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