Category: chlorides-buliding-blocksIn 2022, Laing, Craig C.;Shen, Jiahong;Quintero, Michael A.;Weiss, Benjamin E.;Xia, Yi;Li, Zhi;He, Jiangang;Wolverton, Chris;Kanatzidis, Mercouri G. published 《Homologous Alkali Metal Copper Rare-Earth Chalcogenides A2Cu2nLn4Q7+n (n = 1, 2, 3)》. 《Chemistry of Materials》published the findings. The article contains the following contents:
Twenty-seven new members of the A2Cu2nLn4Q7+n (A = Cs, Rb; Ln = La-Nd, Sm, Gd-Yb; Q = S, Se) homologous series were synthesized in one of three structural types (indicated by n = 1, 2, 3). All the compounds contained 3-dimensional frameworks with alkali metal-containing tunnels. For each increment in n, one Cu2Q was added, which was incorporated into the framework as an edge-sharing tetrahedron by replacing a square planar chalcogenide site. High-throughput DFT calculations predicted many of the phases to be thermodynamically stable. These predictions were compared with the synthesis results for the phases formed in each composition space. In the syntheses, heavier lanthanides showed a preference to start forming the n = 3 ACu3Ln2Q5, which is consistent with the predictions. RbCuNd2Se4 and RbCuTb2Se4 are thermally stable under vacuum at temperatures up to 1000°. Optical measurements revealed bandgaps of 1.55(5) and 1.62(5) eV for CsCuCe2Se4 and RbCuTb2Se4, resp., and a work function of 4.83(5) eV for CsCuPr2Se4. Addnl., some n = 3 ACu3Ln2Q5 compounds exhibit a neg. phonon mode due to a Cu atom coordination, which may distort to a trigonal planar geometry at sufficiently low temperatures The dynamic instabilities and the predicted distortion in the Cu tetrahedra for the n = 3 ACu3Ln2Q5 compounds have a linear relation with the at. number of the lanthanides and the electronegativity of the lanthanides. The A2Cu2nLn4Q7+n compounds can potentially find application as high-temperature thermoelec. materials and other semiconductors. To complete the study, the researchers used Rubidiumchloride (cas: 7791-11-9) .
Rubidium chloride(cas: 7791-11-9) can increases dopamine and norepinephrine levels, and useful for anergic and apathetic depressives.Category: chlorides-buliding-blocks Pharmaceutical compositions have been used as antidepressants in Europe. It is employed in biochemistry to induce cells to take up DNA.
Reference:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics