Department of Chemistry and Center for Material Sciences, Philipps-University Marburg, Hans-Meerwein-Strasse, D-35032, Marburg, Germany.
Dalton Trans. 2010 Sep 21;39(35):8331-8. doi: 10.1039/c0dt00425a. Epub 2010 Aug 9.
Substituting of Ru with Sn and Sb in the phase RuZn(3) led to two new zinc-rich ternary compounds: Ru(4)Sn(2.9)Zn(11.6) (SnRZ: Monoclinic, C2/m, Pearson symbol oC46-delta, a = 6.8011(14), b = 7.9760(16), c = 11.083(2) A, beta = 97.56(3) degrees, Z = 2) and Ru(3.0)Sb(0.97)Zn(11.0) (SbRZ: Orthorhombic, Cmcm, Pearson symbol oC60, a = 7.8936(16), b = 6.8347(14), c = 16.904(3) A, Z = 4). The structures of SnRZ and SbRZ are composed of four identical atomic layers but with different stacking sequences. They exhibit structural units of either three or two interpenetrating icosahedra fusing to form chains along the c axis. Their a and b lattice parameters are alike-interchanged in the chosen conventional setting-while the c parameters are related by c(SbRZ)/2 x (1 + tau) approximately = 2c(SnRZ) with tau = (1 + square root(5))/2 being the golden mean (known as tau-inflated phases). Both two compounds exhibit diamagnetic properties, and SnRZ and SbRZ congruently melt at 1296 K and 1233 K, respectively. Temperature-dependent resistivities reveal metallic behavior. The negative Seebeck coefficients indicate transport processes are dominated by electrons as carriers.
在 RuZn(3)相中用 Sn 和 Sb 替代 Ru 导致了两种新的富锌三元化合物：Ru(4)Sn(2.9)Zn(11.6)（SnRZ：单斜晶系，C2/m，Pearson 符号 oC46-delta，a=6.8011(14)，b=7.9760(16)，c=11.083(2) A，β=97.56(3)°，Z=2）和 Ru(3.0)Sb(0.97)Zn(11.0)（SbRZ：正交晶系，Cmcm，Pearson 符号 oC60，a=7.8936(16)，b=6.8347(14)，c=16.904(3) A，Z=4）。SnRZ 和 SbRZ 的结构由四个相同的原子层组成，但堆叠序列不同。它们表现出由三个或两个相互贯穿的二十面体融合形成链的结构单元，沿着 c 轴延伸。它们的 a 和 b 晶格参数在所选的常规设置中是相互交换的，而 c 参数则通过 c(SbRZ)/2 x (1 + tau) approximately = 2c(SnRZ) 相关联，tau = (1 + square root(5))/2 是黄金比例（称为 tau-inflated 相）。这两种化合物都表现出抗磁性，SnRZ 和 SbRZ 分别在 1296 K 和 1233 K 下完全熔化。温度依赖性电阻率表明其具有金属行为。负的塞贝克系数表明传输过程主要由电子作为载流子控制。
