Open AccessTechnetium Tetrachloride Revisited: A Precursor to Lower-Valent Binary Technetium Chlorides
Author(s) -
Erik V. Johnstone,
Frédéric Poineau,
Paul M. Forster,
Longzou Ma,
Thomas Hartmann,
Andrew Cornelius,
Daniel Antonio,
Alfred P. Sattelberger,
Kenneth R. Czerwinski
Publication year - 2012
Publication title -
inorganic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.348
H-Index - 233
eISSN - 1520-510X
pISSN - 0020-1669
DOI - 10.1021/ic301011c
Subject(s) - chemistry , technetium , magnetic susceptibility , transmission electron microscopy , tetrachloride , antiferromagnetism , paramagnetism , scanning electron microscope , single crystal , inorganic chemistry , crystallography , nuclear chemistry , nanotechnology , organic chemistry , materials science , physics , condensed matter physics , quantum mechanics , tin
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 ∼24 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).
Accelerating Research
Robert Robinson Avenue,
Oxford Science Park, Oxford
OX4 4GP, United Kingdom
Address
John Eccles HouseRobert Robinson Avenue,
Oxford Science Park, Oxford
OX4 4GP, United Kingdom