Anwendung der Elektromigration in freier Elektrolytlösung zur Charakterisierung der Radio-Halogenidionen in nichtwäßrigen Lösungen

Dreyer, R.; Fischer, Steffen; Ludwig, Rainer; Doberenz, W.

doi:10.1080/10256018808624006

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1989

1991

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“…The applied method of electromigration in free electrolytes [4] was also used for electrolytic solutions in organic solvents. At" and At(I) complexes were characterized in methanol and ethanol [5,6]. Organic solvents are necessarily used when ligands insoluble in water or sensitive to hydrolysis are to be investigated.…”

Section: Introductionmentioning

confidence: 99%

First Investigations of Complex Formation of At (l) with Phosphorous Organic Compounds

1989

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Astatine 211 /Astatine complexes /ElectrophoresisSummary Reaction of At(I) with triphenylphosphine, triethylphosphite and tri-n-octylphosphine oxide was investigated in ethanolic solution by means of electromigration. A cationic complex with triphenylphosphine was identified being stable at pH = 1,9 in the concentration range of the ligand between c = 10" 5 to 10" 3 M. At a higher ligand concentration and at pH > 2, the reduction effect of phosphine is superimposed on the complex formation. Complex formation is confirmed by ligand exchange reactions with Br" and I". A comparatively weak complex is formed by triethylphosphite and At(I). No compound is formed by tri-noctylphosphine oxide and At (I).

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Section: Introductionmentioning

confidence: 99%