language: de

Über einige präparative Probleme zum Hexaehlorotechnetat und ihren Einfluß auf die Messung der Zerfallskonstanten des **mTc in Hexahalogenokomplexen

K.P. Dostal und B. Bayerl
Zentralinstitut für Isotopen- u. Strahlenforschung der Akademie der Wissenschaften der DDR,
Leipzig
Z. Naturforsch. 35a, 894-895 (1980);

[eingegangen am 30. Mai 1980]

[About some preparative problems concerning hexachloro - technetate and their influence on the measuring of the decay constant of 99m Tc in hexahalogeno complexes]

A discrepancy between theoretical and experimental values concerning the variation of decay constant of Mm Tc is cleared up. A new preparation of hexachlorotechnetate complex by reduction of pertechnetate ion with hydrazine ia given. The corrected experimental results are A(Tc0 4- )- A(TcCl 6 — ) = ( 1,93 ± 0,12 ) * 10"» A, A(Tc0 4 " " )- *(TcBr 6 — ) = ( 2,44 ± 0,30 ) * 10"3^, A(Tc0 4- )- A(TcJ 6 — ) = ( 3,22 ± 0,29 ) * 10~3 X.

1. Einleitung