SrIr_9In_(18) - A Structurally Complex Intermetallic Compound with Sr@Ir_4In_(12), Ir@In_8 and Ir@In_9 Building Units

Birgit Heying; Rolf-Dieter Hoffmann; Jutta K?sters; Rainer P?ttgen

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SrIr_9In_(18) - A Structurally Complex Intermetallic Compound with Sr@Ir_4In_(12), Ir@In_8 and Ir@In_9 Building Units

机译：SRIR_9IN_（18） - 一种结构复杂的金属间化合物，具有SR @ IR_4in_（12），IR @ IN_8和IR @ IN_9构建单位

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摘要

Single crystals of SrIr_9In_(18) were obtained by induction melting of the elements in a glassy carbon crucible followed by annealing at 1070 K. SrIr_9In_(18) was structurally characterized by X-ray powder and single crystal diffraction: P_4-m~2, a = 811.21(5), c = 854.49(5) pm, wR_2 = 0.0511, 1223 F~2 values, and 46 variables. The structure is of a new type. The basic building units are Ir@In_8 (distorted square-prismatic, square anti-prismatic and bicapped trigonal prismatic coordination) and Ir@In_9 (distorted trigonal prismatic coordination) polyhedra, which condense to a three-dimensional network, which leaves large cavities for the strontium cations, which are coordinated to four iridium and twelve indium atoms. The [Ir_9In_(18)]~(2-) polyanionic network is stabilized through Ir-In (267-290 pm) and In-In (302-354 pm) bonding.

机译：SrIr_9In_（18）的单晶是通过在玻碳坩埚中感应熔化元素，然后在1070 K下退火获得的。SrIr_9In_（18）的结构通过X射线粉末和单晶衍射进行了表征：P_4-m~2，a=811.21（5），c=854.49（5）pm，wR_2=0.0511，1223 F~2值和46个变量。这是一种新型结构。基本的建筑单元是Ir@In_8（畸变方棱柱、方反棱柱和双帽三角棱柱坐标）和Ir@In_9（扭曲的三角棱柱配位）多面体，浓缩成三维网络，为锶离子留下大的空腔，锶离子与四个铱原子和十二个铟原子配位。通过Ir-In（267-290pm）和In-In（302-354pm）键合，稳定了[Ir_9In_18]~（2-）聚阴离子网络。

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来源
《Zeitschrift fur Anorganische und Allgemeine Chemie》 |2020年第13期|共5页
作者
Birgit Heying; Rolf-Dieter Hoffmann; Jutta K?sters; Rainer P?ttgen;
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作者单位

Institut für Anorganische und Analytische Chemie Universit?t Münster Corrensstrasse 30 48149 Münster Germany;

Institut für Anorganische und Analytische Chemie Universit?t Münster Corrensstrasse 30 48149 Münster Germany;

Institut für Anorganische und Analytische Chemie Universit?t Münster Corrensstrasse 30 48149 Münster Germany;

Institut für Anorganische und Analytische Chemie Universit?t Münster Corrensstrasse 30 48149 Münster Germany;

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正文语种 eng
中图分类化学;
关键词
Indium intermetallics; Strontium; Iridium; Crystal structure;

机译：铟属金属;锶;铱;晶体结构;

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SrIr_9In_(18) - A Structurally Complex Intermetallic Compound with Sr@Ir_4In_(12), Ir@In_8 and Ir@In_9 Building Units

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