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首页> 外文期刊>Acta crystallographica. Section C, Structural chemistry. >Ionothermal synthesis and crystal structure of a new organic–inorganic hybrid compound: catena-poly[bis(1-ethyl-3-methylimidazolium) [hepta-μ-bromido-pentacuprate(I)]]
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Ionothermal synthesis and crystal structure of a new organic–inorganic hybrid compound: catena-poly[bis(1-ethyl-3-methylimidazolium) [hepta-μ-bromido-pentacuprate(I)]]

机译：一种新的有机-无机杂化化合物的电热合成和晶体结构：阳离子-聚[双（1-乙基-3-甲基咪唑鎓）[庚-μ-溴代戊二酸酯（I）]]

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摘要

A new organic–inorganic hybrid compound, catena-poly[bis(1-ethyl-3-methylimidazolium) [μ5-bromido-tri-μ3-bromido-tri-μ2-bromido-pentacuprate(I)]], {(C6H11N2)2[Cu5Br7]}n, has been obtained under ionothermal conditions from a reaction mixture containing Ba(OH)2·8H2O, Cu(OH)2·2H2O, As2O5, 1-ethyl-3-methylimidazolium bromide and distilled water. The crystal structure consists of complex [Cu5Br7]2? anions arranged in sinusoidal {[Cu5Br7]2?}n chains running along the a axis, which are surrounded by 1-ethyl-3-methylimidazolium cations. Three of the five unique Br atoms and one of the three CuI atoms occupy special positions with half-occupancy (a mirror plane perpendicular to the b axis, site symmetry m). The CuI ions are in a distorted tetrahedral coordination environment, with four Br atoms at distances ranging from 2.3667?(10) to 2.6197?(13)??, and an outlier at 3.0283?(12)??, exceptionally elongated and with a small contribution to the bond-valence sum of only 6.7%. Short C—H...Br contacts build up a three-dimensional network. The Cu...Cu distances within the chain range from 2.8390?(12) to 3.0805?(17)??, indicating the existence of weak CuI...CuI cuprophilic interactions.
机译：一种新的有机-无机杂化化合物，链状聚[双（1-乙基-3-甲基咪唑鎓）[μ5-溴代三-μ3-溴代三-μ2-溴代戊二酸酯（I）]，{（C6H11N2）在离子热条件下，由含Ba（OH）2·8H2O，Cu（OH）2·2H2O，As2O5、1-乙基-3-甲基咪唑鎓溴化物和蒸馏水的反应混合物制得2 [Cu5Br7]} n。晶体结构由[Cu5Br7] 2？沿a轴呈正弦形{[Cu5Br7] 2？} n链排列的阴离子，周围被1-乙基-3-甲基咪唑鎓阳离子包围。五个唯一的Br原子中的三个和三个CuI原子中的一个占据半占据的特殊位置（垂直于b轴的镜像平面，位置对称m）。 CuI离子处于扭曲的四面体配位环境中，四个Br原子的距离范围为2.3667？（10）至2.6197？（13）??，离群点为3.0283？（12）??，异常伸长并且具有债券价总和的贡献很小，仅为6.7％。简短的C-H ... Br触点建立了三维网络。链中的Cu ... Cu距离范围为2.8390？（12）到3.0805？（17）??，表明存在弱的CuI ... CuI嗜铜性相互作用。

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