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22 861 (0,175s)

Result

Solvent extraction of europium from nitric acid solutions into chlorobenzene in the presence of calixarenes and dicarbollides

The method is described for extraction recovery of Eu ions from nitric acid solution using calixarene derivatives in co-operation with carbolides......

CC - Organická chemie

  • 2002
  • Jx
Result

Solvent extraction of europium trifluoromethanesulfonate into nitrobenzene in the presence of p-tert-butylcalix[6]arene and p-tert-butylcalix[8]arene

By using the corresponding extraction constants determined in the water-nitrobenzene system, the stability constants of the europium complexes with two electroneutral calixarene ligands in nitrobenzene saturated with water were calc...

CF - Fyzikální chemie a teoretická chemie

  • 2011
  • Jx
  • Link
Result

Upper rim-bridged calixarenes

of the basic skeleton, calixarenes are among the very popular building blocks used supramolecular systems. Regio- and/or stereo-selective derivatization of calixarenes of calixarenes, often leading to interesting rigidifie...

Organic chemistry

  • 2024
  • Jimp
  • Link
Result

tert-Butyl-calix[4]arenes Substituted at the Narrow Rim with Cobalt Bis(dicarbollide)(1-) and CMPO Groups - New and Efficient Extractants for Lanthanides and Actinides

The synthesis of a new group of compound based on Calix[4]arene derivatives bearing two residues is described. These compounds can be used as efficient extractants for lanthanides and actinides....

CA - Anorganická chemie

  • 2007
  • Jx
Result

Extraction and DFT study on the complexation of H3O+ with hexaethyl p-tert-butylcalix[6]arene hexaacetate

Using the corresponding exchange extraction constant determined in the water - nitrobenzene system, the stability constant of hydroxonium - substituted calix[6]arene complex in nitrobenzene saturated with water was calculated. Further, by me...

CB - Analytická chemie, separace

  • 2007
  • Jx
Result

Extraction of europium trifluoromethanesulfonate into nitrobenzene in the presence of some electroneutral calixarene ligands

From extraction experiments and ?-activity measurements, the extraction constants corresponding to the general equilibrium Eu3+(aq) + 3 A-(nb) + L(nb) = EuL3+(nb) + A-(nb) taking place in the two-phase water?nitrobenzene system (A- ...

CB - Analytická chemie, separace

  • 2010
  • Jx
Result

Cobalt bis(dicarbollide) ions with covalently bonded CMPO groups as selective extraction agents for lanthanide and actinide cations from highly acidis nuclear waste solutions

Cobalt bis(dicarbollide) ions with covalently bonded CMPO groups as selective extraction agents for lanthanide and actinide cations from highly acidis nuclear waste solutions......

CA - Anorganická chemie

  • 2002
  • Jx
Result

Stability constants of complexes of Li+, H3O+, NH4+ and Ag+ with hexaethyl calix[6]arene hexaacetate in nitrobenzene saturated with water

By using the corresponding exchange extraction constants determined in the water-nitrobenzene system, the stability constants of the complexes of some univalent cations with hexaethyl calix[6]arene hexaacetate in nitrobenzene saturated with ...

CB - Analytická chemie, separace

  • 2008
  • Jx
Result

Stability of complexes of alkali metal cations with tetraethyl p-tert-butylcalix[4]arene tetraacetate in the water-nitrobenzene system

By using the corresponding exchange extraction constant determined in the water-nitrobenzene system, the stability constant of the complexes of alkali metal cations with tetraethyl p-tert butylcalix[4]arene tetraacetate in nitrobenzene satur...

CB - Analytická chemie, separace

  • 2007
  • Jx
Result

Contribution to protonated tetraethyl p-tert-butyl[4]arenetetraacetate:stability and DFT calculated structure

By using DFT calculations, the most protonable structure of protonated tetraethyl p-tert-butylcalix[4]arene tetraacetate was derived...

JJ - Ostatní materiály

  • 2009
  • Jx
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