The new sodium tellurido manganates(II) Na<sub>2</sub>Mn<sub>2</sub>Te<sub>3</sub>, Na<sub>2</sub>Mn<sub>3</sub>Te<sub>4</sub>, Na<sub>2</sub>
<i>A</i>MnTe<sub>3</sub> (<i>A</i>=K, Rb), and NaCsMnTe<sub>2</sub>
作者:Michael Langenmaier、Caroline Röhr
DOI:10.1515/znb-2019-0104
日期:2019.9.25
ribbons are also the ligands of edge-sharing [Mn(1)Te6] chains of octahedra. Similar to Na2Mn2Te3, the Na+ cations are octahedrally coordinated and the cations occupy tetrahedral (Mn2+) and octahedral (Na+, Mn2+) voids in the close Te2− packing. The isotypic K/Rb salts Na2AMnTe3 crystallize in a new structure type (orthorhombic, space group Pmc21, a = 1069.70(4)/1064.34(2), b = 1350.24(5)/1350.47(3), c = 1238
摘要 在 600-1000°C 的最高温度下,由纯元素(或 MnTe)的熔体合成了一系列新的钠和混合 Na/A(A = K、Rb、Cs)碲锰酸盐。两种纯钠盐Na2Mn2Te3的单斜晶体结构(空间群C2/c,a = 1653.68(2), b = 1482.57(2), c = 773.620(10) pm, β = 117.52°, Z = 8, R1 = 0.0225) 和 Na2Mn3Te4 (空间群 C2/m, a = 1701.99(3), b = 438.741(8), c = 691.226(12) pm, β = 90.3171(8)°, Z = 2, R1 = 0.0)均基于六边形密堆积 Te2- 排列。Na2Mn2Te3 与 Na2Mn2S3 和 Na2Mn2Se3 同型,包含 [MnTe4] 四面体层,这些层通过公共边连接形成四聚体 [Mn4Te6]。这些四聚体通过 μ3-Te