Premium
The First Structure with Isolated Carbon‐Centered Tetrahedra of Rare‐Earth Metals – the New Compound Ce 4 CCl 8
Author(s) -
Schaloske Manuel C.,
Kienle Lorenz,
Hoch Constantin,
Mattausch Hansjürgen,
Kremer Reinhard K.,
Simon Arndt
Publication year - 2009
Publication title -
zeitschrift für anorganische und allgemeine chemie
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.354
H-Index - 66
eISSN - 1521-3749
pISSN - 0044-2313
DOI - 10.1002/zaac.200801391
Subject(s) - crystallography , cerium , high resolution transmission electron microscopy , crystal structure , tetrahedron , tantalum , stoichiometry , materials science , rare earth , dodecahedron , chemistry , inorganic chemistry , transmission electron microscopy , mineralogy , nanotechnology , metallurgy
Ce 4 CCl 8 is prepared by heating stoichiometric mixtures of cerium, CeCl 3 and carbon in sealed tantalum capsules at 820 °C. It forms black polyhedral, in fragments transparent orange to red and moisture‐sensitive crystals [space group Pc , a = 13.538(1) Å, b = 10.487(1) Å, c = 22.845(1) Å, β = 126.31(1)°]. The crystal structure contains C‐centered Ce 4 C single tetrahedra, linked by chlorine atoms above edges and corners in different ways. The compound is further characterized by HRTEM, electron‐diffraction investigations and magnetic measurements.