In:
European Journal of Inorganic Chemistry, Wiley, Vol. 2014, No. 12 ( 2014-04), p. 2046-2052
Abstract:
The reaction between Tc VII and H 2 S (g) in 12 M H 2 SO 4 has been studied. This reaction produced a black solid and a brown supernate. The solid was analyzed by energy dispersive X‐ray (EDX) and X‐ray absorption fine structure (XAFS) spectroscopy and the results were consistent with the presence of Tc 2 S 7 . The speciation of technetium in the supernate was performed by UV/Visible and XAFS spectroscopy. Experiments showed that in 12 M H 2 SO 4 an intermediate Tc V sulfate complex was formed. Analysis indicated that the final complex present in solution was a polymeric species with a Tc–O–Tc core coordinated to sulfate ligands. Density Functional Theory (DFT) calculations showed that the proposed complexes were stable and that the theoretical structure was in good agreement with XAFS data.
Type of Medium:
Online Resource
ISSN:
1434-1948
,
1099-0682
DOI:
10.1002/ejic.v2014.12
DOI:
10.1002/ejic.201301410
Language:
English
Publisher:
Wiley
Publication Date:
2014
detail.hit.zdb_id:
1475009-0
Permalink