Êtes-vous un étudiant de l'EPFL à la recherche d'un projet de semestre?
Travaillez avec nous sur des projets en science des données et en visualisation, et déployez votre projet sous forme d'application sur GraphSearch.
In light of ever growing interests in noncentrosym. materials, a fascinating reticular chem. is illustrated via the structure of a new family of solids where the acentric symmetry of the known [V4+14As3+8O42Cl]5- POM cluster is manifested through the network construction of countercations featuring slabs of Cs+-based half SOD β-cages. The synthesis of Cs5V14As8O42X (X = Cl, Br, I; 1-3, resp.) and their hydrates (4-6) and of a decompn. product Cs5V14As2O40Cl·2.6H2O (7) is described and their crystal structures detd. The non-linear optical properties of 1-3 are described and SHG measurements show efficiencies of 1-3 comparable with α-SiO2.