Technetium tetrachloride revisited: a precursor to lower-valent binary technetium chlorides.
Inorg Chem
; 51(15): 8462-7, 2012 Aug 06.
Article
in En
| MEDLINE
| ID: mdl-22775538
ABSTRACT
Technetium tetrachloride has been prepared from the reaction of technetium metal with excess chlorine in sealed Pyrex ampules at elevated temperatures. The product was characterized by single-crystal and powder X-ray diffraction, transmission electron microscopy, scanning electron microscopy, and alternating-current magnetic susceptibility. Solid TcCl(4) behaves as a simple paramagnet from room temperature down to 50 K with µ(eff) = 3.76 µ(B). Below 25 K, TcCl(4) exhibits an antiferromagnetic transition with a Néel temperature (T(N)) of â¼24 K. The thermal behavior of TcCl(4) was investigated under vacuum at 450 °C; the compound decomposes stepwise to α-TcCl(3) and TcCl(2).
Full text:
1
Database:
MEDLINE
Language:
En
Journal:
Inorg Chem
Year:
2012
Type:
Article
Affiliation country:
United States