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首页> 外文期刊>Journal of Alloys and Compounds: An Interdisciplinary Journal of Materials Science and Solid-state Chemistry and Physics >Syntheses and crystal structures of the compounds In_(37)Mo_(15)S_(19) In_(1.6)Rb_2Mo_(15)S_(19), In_(2.2)CsMo_(15)S_(19) and ScTl_2Mo_(15)S_(19) containing Mo_6 and Mo_9 clusters
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Syntheses and crystal structures of the compounds In_(37)Mo_(15)S_(19) In_(1.6)Rb_2Mo_(15)S_(19), In_(2.2)CsMo_(15)S_(19) and ScTl_2Mo_(15)S_(19) containing Mo_6 and Mo_9 clusters

机译:化合物In_(37)Mo_(15)S_(19)In_(1.6)Rb_2Mo_(15)S_(19),In_(2.2)CsMo_(15)S_(19)和ScTl_2Mo_(15)S_的合成和晶体结构(19)包含Mo_6和Mo_9簇

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摘要

The new compounds In_(3.7)Mo_(15)S_(19), In_(1.6)Rb_2Mo_(15)S_(19), In_(2.2)CsMo_(15)S_(19), and ScTl_2Mo_(15)S_(19) have been synthesized by solid-state reaction in sealed molybdenum crucible at about 1250 deg C. Their crystal structures were solved and refined from X-ray single-crystal data in the hexagonal space group P63/m. Their Mo-S framework consists of an equal mixture of Mo_6S_8S_6 and Mo_9S_(11)S_6 cluster units interconnected through Mo-S bonds. In_(3.7)Mo(15)S_(19), the In atoms occupy crystallographically different positions depending on their formal oxidation states of +1 or +3. This was confirmed by replacing partially or totally the monovalent indium by another monovalent cation such as the rubidium, cesium or thallium and the trivalent indium by the scandium to get the new In_(1.6)R_2Mo(15)S_(15), In_(2.2)CsMo_(15)_S_(19), and ScTl_2Mo_(15)S_(19) compounds, respectively.
机译:新化合物In_(3.7)Mo_(15)S_(19),In_(1.6)Rb_2Mo_(15)S_(19),In_(2.2)CsMo_(15)S_(19)和ScTl_2Mo_(15)S_(19 )是在密封的钼坩埚中在约1250摄氏度下通过固相反应合成的。它们的晶体结构已根据X射线单晶数据(六边形空间群P63 / m)进行了解析和精炼。他们的Mo-S框架由通过Mo-S键互连的Mo_6S_8S_6和Mo_9S_(11)S_6簇单元的均等混合物组成。 In_(3.7)Mo(15)S_(19)中的In原子在晶体学上的位置不同,具体取决于其+1或+3的形式氧化态。通过用另一种单价阳离子(例如the,铯或th)部分取代或完全取代单价铟,并用the取代三价铟,得到新的In_(1.6)R_2Mo(15)S_(15),In_(2.2)证实了这一点。 )CsMo_(15)_S_(19)和ScTl_2Mo_(15)S_(19)化合物。

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