Electron-deficient telluride Cs3Cu20Te13 with sodalite-type network: syntheses, structures, and physical properties.
The first sodalite-type telluride, Cs3Cu20Te13, has been successfully synthesized by solid-state reactions. The single-crystal X-ray diffraction data reveal its cubic symmetry and lattice parameters of a = 14.7557(6) Å, V = 3212.8(2) Å(3), and Z = 4. The three-dimensional network is constructed by (CuTe)12 tetrakaidecahedra centered by different guest species (either a Cs(+) or a Te(2-)@Cu8 cube) extending in a 2 × 2 × 2 supercell with respect to the conventional sodalite. Density functional theory analysis uncovers the unique feature of the p-type metallic sodalite framework accommodating anionic guest species, which agrees well with the experimental metallic electrical conductivity and Pauli paramagnetism.
State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences , 155 Yangqiao Road West, Fuzhou, Fujian 350002, People's Republic of China.
Wen-Juan
WJ
Huai
Jin-Ni
JN
Shen
Hua
H
Lin
Ling
L
Chen
Li-Ming
LM
Wu