CAS Chemical Centre, Lund University, Getingevägen 60, Lund, Sweden, Box 124, SE-22100.
Inorg Chem. 2012 Sep 17;51(18):9893-901. doi: 10.1021/ic301326p. Epub 2012 Sep 5.
The crystal structure of three incommensurately modulated γ-brass related composite structures in the Pd-Zn-Pt system has been solved from X-ray single crystal diffraction data using a 3 + 1-dimensional super space description. The compounds Pt(x)Pd(15-x)Zn(54) (x ≈ 6, 7, 10) crystallize in orthorhombic superspace group Fmmm(α00)0s0 (F = [(1/2, 1/2, 0, 0); (1/2, 0, 1/2, 0); (0, 1/2, 1/2, 0)] with the following fundamental cell dimensions: a = 4.265(1) Å, b = 9.132(1) Å, c = 12.928(2) Å, q ≈ 0.629a*; a = 4.284(1) Å, b = 9.151(2) Å, c = 12.948(4) Å, q ≈ 0.628a*; and a = 4.288(1) Å, b = 9.140(4) Å, c = 12.926(7) Å, q ≈ 0.627a*. Each structure is built by two sub-lattices-pentagonal antiprismatic columns parallel to [100] and a zigzag chain of Zn atoms running along the center of the column.
钯-锌-铂系统中三种不同调幅的 γ-黄铜相关复合结构的晶体结构已通过 X 射线单晶衍射数据，使用 3+1 维超空间描述来解决。化合物 Pt(x)Pd(15-x)Zn(54)（x≈6、7、10）在正交超空间群 Fmmm(α00)0s0（F = [(1/2, 1/2, 0, 0); (1/2, 0, 1/2, 0); (0, 1/2, 1/2, 0)] 中结晶，具有以下基本细胞尺寸：a = 4.265(1)Å，b = 9.132(1)Å，c = 12.928(2)Å，q ≈ 0.629a*；a = 4.284(1)Å，b = 9.151(2)Å，c = 12.948(4)Å，q ≈ 0.628a*；a = 4.288(1)Å，b = 9.140(4)Å，c = 12.926(7)Å，q ≈ 0.627a*。每个结构由两个子晶格组成-平行于[100]的五重反棱柱柱和沿柱中心运行的 Zn 原子锯齿链。
