Hydrothermal synthesis of [C6H16N2][In2Se3(Se2)]: A new one-dimensional indium selenide
Hydrothermal synthesis of [C6H16N2][In2Se3(Se2)]: A new one-dimensional indium selenide
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DOI：
10.1016/j.jssc.2011.05.021
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发表时间：
2011-07
影响因子：
3.3
通讯作者：
S. J. Ewing;A. Powell;P. Vaqueiro
中科院分区：
文献类型：
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作者：
S. J. Ewing;A. Powell;P. Vaqueiro
以铟、硒和反式-1，4-二氨基环己烷为原料，在170 °C水热条件下合成了一种新型有机模板硒化铟[C6 H16 N2][In 2Se 3（Se 2）]。通过单晶和粉末X射线衍射、热重分析、紫外-可见漫反射光谱、红外光谱和元素分析对该材料进行了表征。晶体属单斜晶系，空间群C2/c（a=12.0221（16），B=11.2498（15），c=12.8470（17），β=110.514（6）°）。[C6 H16 N2][In 2Se 3（Se 2）]的晶体结构含有化学计量比为[In 2Se 3（Se 2）]2−的阴离子链，其平行于[1 0 1]方向排列，并被双质子化的反式-1，4-二氨基环己烷阳离子隔开。[In 2Se 3（Se 2）]2−链由交替的四元[In 2Se 2]和五元[In 2Se 3]环组成，含有全硒化物（Se 2）2−单元。紫外-可见漫反射光谱表明[C6 H16 N2][In 2Se 3（Se 2）]具有2.23（1）eV的带隙。
A new organically templated indium selenide, [C6H16N2][In2Se3(Se2)], has been prepared hydrothermally from the reaction of indium, selenium and trans-1,4-diaminocyclohexane in water at 170 °C. This material was characterised by single-crystal and powder X-ray diffraction, thermogravimetric analysis, UV–vis diffuse reflectance spectroscopy, FT-IR and elemental analysis. The compound crystallises in the monoclinic space groupC2/c(a=12.0221(16) Å,b=11.2498(15) Å,c=12.8470(17) Å,β=110.514(6)°). The crystal structure of [C6H16N2][In2Se3(Se2)] contains anionic chains of stoichiometry [In2Se3(Se2)]2−, which are aligned parallel to the [1 0 1] direction, and separated by diprotonated trans-1,4-diaminocyclohexane cations. The [In2Se3(Se2)]2−chains, which consist of alternating four-membered [In2Se2] and five-membered [In2Se3] rings, contain perselenide (Se2)2−units. UV–vis diffuse reflectance spectroscopy indicates that [C6H16N2][In2Se3(Se2)] has a band gap of 2.23(1) eV.