ISSN:
1612-1112
Keywords:
Complexation gas chromatography
;
Equilibrium constants of adduct formation
;
Diketonates of Eu and Pr
;
Aliphatic alcohols, methyl ketones, and methyl ethers
;
Carboxylic acid methyl esters
Source:
Springer Online Journal Archives 1860-2000
Topics:
Chemistry and Pharmacology
Notes:
Summary Complex formation between fluorinated and methylated β-diketonates of praseodymium and europium, dissolved in a polydimethylsiloxane stationary phase, and aliphatic alcohols, methyl ketones, methyl ethers and carboxylic acid methyl esters has been studied. Investigations were carried out isothermally in the range 90 to 130°C. An increase in retention values measured on the complexing stationary phase for the test solutes was the primary observation. Equilibrium constants (K) of adduct formation were determined from retention data. It was established that fluorinated lanthanide β-diketonates enhance adduct formation more selectively than the corresponding methyl compounds. Decrease in the ionic radii from praseodymium to europium gave rise to increased K values.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF02274567
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