首页> 美国卫生研究院文献>Acta Crystallographica Section E: Crystallographic Communications >The pseudosymmetric structure of bis­(pentane-1,5-diaminium) iodide tris­(triiodide)
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The pseudosymmetric structure of bis­(pentane-1,5-diaminium) iodide tris­(triiodide)

机译:双­(1,5-戊二胺)碘化物三­(三碘化物)的拟对称结构

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摘要

The asymmetric unit of the title compound, [H3N(CH2)5NH3]2I[I3]3 or 2C5H16N2 2+·3I3 ·I, consists of two crystallographically independent pentane-1,5-diaminium dications and two triiodide anions in general positions besides two additional triiodide and two iodide anions located on twofold axes. The compound crystallizes in the centrosymmetric monoclinic space group P2/n. The structure refinement was handicapped by the pseudosymmetry (pseudo-centering) of the structure and by twinning. The crystal structure is composed of two alternate layers, which differ in their arrangement of the pentane-1,5-diaminium dications and the iodide/triiodide anions and which are connected via weak to medium–strong N—H⋯I hydrogen bonds, constructing a complex hydrogen-bonded network.
机译:标题化合物[H3N(CH2)5NH3] 2I [I3] 3或2C5H16N2 2 + ·3I3 -·I -,由两个晶体学上独立的戊烷1,5-二铵离子和两个在一般位置的三碘化物阴离子组成,另外还有两个位于三重轴上的另外的三碘化物和两个碘化物阴离子。该化合物在中心对称单斜空间群P2 / n中结晶。通过结构的伪对称(伪居中)和孪生,妨碍了结构的改进。晶体结构由两个交替的层组成,它们的戊烷-1,5-二铵和碘化物/三碘化物阴离子的排列方式不同,并且通过弱至中等强度的N-H⋯I氢键连接,复杂的氢键网络。

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