Electron-deficient telluride Cs3Cu20Te13 with sodalite-type network: syntheses, structures, and physical properties
Wen-Juan Huai1, Jin-Ni Shen, Hua Lin
1State 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.
Abstract:
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.
More Related Videos
09:45Epitaxial Growth of Perovskite Strontium Titanate on Germanium via Atomic Layer Deposition
Published on: July 26, 2016
09:26In Situ Time-dependent Dielectric Breakdown in the Transmission Electron Microscope: A Possibility to Understand the Failure Mechanism in Microelectronic Devices
Published on: June 26, 2015
Related Concept Videos
01:26Imperfections in Crystal Structure: Stoichiometric Point Defects
02:27Predicting Molecular Geometry
02:42Ionic Crystal Structures
Most monatomic ions behave as charged spheres, and their attraction for ions of opposite charge is the same in every direction. Consequently, stable structures for ionic compounds result (1) when ions of one charge are surrounded by as many ions as possible of the opposite...
01:27Schottky Barrier Diode
01:29Imperfections in Crystal Structure: Non-Stoichiometric Defects
02:58Crystal Field Theory - Octahedral Complexes
To explain the observed behavior of transition metal complexes (such as colors), a model involving electrostatic interactions between the electrons from the ligands and the electrons in the unhybridized d orbitals of the central metal atom has been developed. This electrostatic model is crystal field theory (CFT). It helps to understand, interpret, and predict the colors, magnetic behavior, and some structures of coordination compounds of transition metals.
CFT focuses on...