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首页> 外文期刊>Zeitschrift fur Naturforschung, B. A Journal of Chemical Sciences >Synthesis and structure determinantion of the first lead arsenide phosphide Pb2AsxP14-x (x similar to 3.7)
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Synthesis and structure determinantion of the first lead arsenide phosphide Pb2AsxP14-x (x similar to 3.7)

机译:第一砷化铅磷化物Pb2 xP14-x(x与3.7相似)的合成与结构确定

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摘要

Pb2AsxP14-x was synthesized by reacting the pnicogens in a lead melt in sealed silica ampoules. A mixture of hydrogen peroxide and glacial acetic acid removed lead from the final product. Pb2AsxP14-x represents the first lead arsenide phosphide adopting a new structure type. Systematic substitution of phosphorus by arsenic leads to the formation of Pb2AsxP14-x with x similar to 3.7, a compound with a two-dimensional arrangement of polypnictide layers, coordinated by Pb2+ cations. Pb2AsxP14-x is structurally related to PbP7 where a three-dimensional polyphosphide network is realized instead. The structure of Pb2As3.7(1)P10.3(1) was determined from single crystal X-ray diffraction data: space group P2(1)2(1)2(1) (no. 19), a = 10.060(1), b = 10.500(1), c = 13.711(2)angstrom, and V = 1448.3(4)angstrom(3). The structure is discussed relative to PbP7 focusing on the differences in the polyanionic substructures of the two polypnictides.
机译:Pb2AsxP14-x是通过在密封的二氧化硅安瓿瓶中的铅熔体中使光原剂反应而合成的。过氧化氢和冰醋酸的混合物从最终产物中除去了铅。 Pb2AsxP14-x代表采用新结构类型的首个磷化砷砷化物。用砷对磷进行系统取代会导致x类似于3.7形成Pb2AsxP14-x,x是一种由Pb2 +阳离子配位的,具有二维排列的多肽层的化合物。 Pb2AsxP14-x在结构上与PbP7有关,而在其中实现了三维多磷化物网络。根据单晶X射线衍射数据确定Pb2As3.7(1)P10.3(1)的结构:空间群P2(1)2(1)2(1)(第19号),a = 10.060( 1),b = 10.500(1),c = 13.711(2)埃,V = 1448.3(4)埃(3)。相对于PbP7讨论了该结构,重点是两个多肽的聚阴离子亚结构的差异。

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