Structural studies of polycrystalline CuAsSe2, Cu3AsSe4and Cu3AsSe3are reported. These were found to be cubic with space groupPmmand lattice parameters as follows: (1) CuAsSe2:a= 5.513(4) Å,V= 167.47(1) Å3,Z= 2;Dm= 5.56(6),Dx= 5.88 g cm−3. (2) Cu3AsSe4:a= 5.530(5) Å;V= 169.11(2) Å3;Z= 1;Dm= 5.51(5),Dx= 5.75 g cm−3. (3) Cu3AsSe3:a= 5.758(9) Å,V= 190.87(3) Å3,Z= 1,Dm= 5.03(9),Dx= 4.45 g cm−3. X‐ray diffraction data using a Rigaku DMAX
展开▼
机译:报道了多晶CuAsSe2、Cu3AsSe4和Cu3AsSe3的结构研究.发现它们是立方的,空间群Pmm和晶格参数如下:(1)CuAsSe2:a= 5.513(4) Å,V= 167.47(1) Å3,Z= 2;Dm= 5.56(6),Dx= 5.88 g cm−3.(2)Cu3AsSe4:a= 5.530(5) Å;V= 169.11(2) Å3;Z=1;Dm= 5.51(5),Dx= 5.75 g cm−3.(3) Cu3AsSe3:a= 5.758(9) Å,V= 190.87(3) Å3,Z= 1,Dm= 5.03(9),Dx= 4.45 g cm−3.使用理学DMAX的X射线衍射数据
展开▼