Pan Ming-Yan, Xia Sheng-Qing, Tao Xu-Tang
State Key Laboratory of Crystal Materials, Institute of Crystal Materials, Shandong University, Jinan, Shandong 250100, People's Republic of China.
Acta Crystallogr E Crystallogr Commun. 2015 Apr 9;71(Pt 5):i4. doi: 10.1107/S2056989015006933. eCollection 2015 May 1.
The title compound, penta-barium tetra-indium hexa-anti-mony, was synthesized by an indium-flux reaction and its structure features layers composed of edge-sharing In2Sb6 units. The voids between the In4Sb6 layers are filled by Ba(2+) cations, which are all surrounded by six Sb atoms and form bicapped octa-hedral or triangular prismatic coordination geometries. There are five barium ions in the asymmetric unit: one has no imposed crystallographic symmetry, two lie on mirror planes and two have mm2 point symmetry. The two In atoms and four Sb atoms in the asymmetric unit all lie on general crystallographic positions.
标题化合物五钡四铟六锑是通过铟熔剂反应合成的，其结构特征是由共用边的In2Sb6单元组成的层。In4Sb6层之间的空隙由Ba(2+)阳离子填充，这些阳离子均被六个Sb原子包围，形成双帽八面体或三角棱柱配位几何结构。不对称单元中有五个钡离子：一个没有强制的晶体学对称性，两个位于镜面上，两个具有mm2点对称性。不对称单元中的两个In原子和四个Sb原子均位于一般晶体学位置。
