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首页> 外文期刊>Zeitschrift fur Anorganische und Allgemeine Chemie >As12Se44-: a new selenoarsenate anion with a polyarsenic cage in the compound [Co(NH3)(6)](2)As12Se4 center dot 12 NH3 [German]
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As12Se44-: a new selenoarsenate anion with a polyarsenic cage in the compound [Co(NH3)(6)](2)As12Se4 center dot 12 NH3 [German]

机译:As12Se44-:在化合物[Co(NH3)(6)](2)As12Se4中心点12 NH3中具有聚砷笼的新硒砷酸根阴离子[德国]

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摘要

Orange coloured crystals of [Co(NH3)(6)](2)As12Se4. 12 NH3 were prepared by the reduction of As4Se4 with a solution of sodium in liquid ammonia and subsequent precipitation with CoBr2. The X-ray structure determination shows them to contain the selenoarsenate anion As12Se44-, which consists of a central As-12-cage with four exo-bonded, formally negatively charged Se atoms. The structure of the As-12-cage is equivalent to the main polyphosphorus building unit of a known organopolyphosphane and of tubular P-12 in the compound (CUI)(3)P-12. [References: 23]
机译:[Co(NH3)(6)](2)As12Se4的橙色晶体。通过用钠在液态氨中的溶液还原As4Se4并随后用CoBr2沉淀来制备12个NH3。 X射线结构测定表明,它们含有硒砷酸根阴离子As12Se44-,由一个中心的As-12笼和四个外键合,带负电的硒原子组成。 As-12笼的结构与化合物(CUI)(3)P-12中已知的有机聚膦和管状P-12的主要多磷构建单元相同。 [参考:23]

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