Structural study and physico-chemical characterization of the novel triple tungstate Na<sub>4</sub>Cu(WO<sub>4</sub>)<sub>3</sub> with alluaudite-like structure
Ilyas Belkhettab, Oualid Mokhnache, Abdelmounaim Chetoui, Ismail Bencherifa, Habib Boughzala
Abstract
New Na 4 Cu(WO 4 ) 3 alluaudite structure, composed of [(Cu,Na)O 6 ] octahedra and [WO 4 ] tetrahedra forming a 3D framework with hexagonal channels. The PL spectra show an excitation band at 280 nm (CTB) and an emission at 500 nm, attributed to 2 E g → 2 T 2g .
Topics & Concepts
ChemistryOctahedronTetrahedronCharacterization (materials science)CrystallographyHexagonal crystal systemTungstateExcitationSpectral lineTungstenEmission spectrumWolframiteCrystal structureInorganic compoundCrystal Structures and PropertiesX-ray Diffraction in CrystallographySolid-state spectroscopy and crystallography