| 极性金属间化合物LuSn2的合成、晶体结构及能带特征 |
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| 引用本文： | 岳呈阳.极性金属间化合物LuSn2的合成、晶体结构及能带特征[J].无机化学学报,2011,27(11):2245-2250. |
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| 作者姓名： | 岳呈阳 |
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| 作者单位： | 济宁学院化学与化工系,曲阜,273155 |
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| 基金项目： | 国家自然科学基金青年基金，山东省优秀中青年科学家科研奖励基金，济宁学院“国家级基金计划预研项目，山东省高等学校科技计划 |
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| 摘 要： | 在惰性气氛氩气保护下,通过高温固相反应合成得到了一个新的二元极性金属间化合物LuSn2。经X-射线单晶衍射与元素分析等方法确定了其晶体结构。LuSn2属正交晶系,空间群为Cmcm,晶体学参数a=0.435 11(10)nm,b=1.601 6(4)nm,c=0.427 80(8)nm,V=0.298 12(11)nm3,Z=4,R1=0.017 0,wR2=0.032 4。LuSn2属于ZrSi2结构类型,其结构中包含有一维"之"字型Sn链与二维四方格子状Sn层,Lu原子排列在Sn链与Sn层的空隙中。能带结构计算表明LuSn2呈金属导电性。
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| 关 键 词： | 极性金属间化合物 高温固相反应 晶体结构 Sn化物 |
Synthesis, Crystal Structure and Band Structure of LuSn2 |
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| YUE Cheng-Yang.Synthesis, Crystal Structure and Band Structure of LuSn2[J].Chinese Journal of Inorganic Chemistry,2011,27(11):2245-2250. |
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| Authors: | YUE Cheng-Yang |
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| Institution: | Department of Chemistry and Chemical Engineering, Jining University, Qufu, Shandong 273155, China |
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| Abstract: | A new binary intermetallic compound,LuSn2,has been synthesized by solid-state reaction of the corresponding pure elements in a welded niobium tube at high temperature.Its crystal structure was established by single-crystal X-ray diffraction.LuSn2crystallizes in the orthorhombic space group Cmcm with a=0.435 11(10) nm,b=1.601 6(4) nm,c=0.427 80(8) nm,V=0.298 12(11) nm3,Z=4,R1=0.0170 and wR2=0.0324.The structure of LuSn2 belongs to the ZrSi2 type.It is isostructural with RESn2 (RE=Y,Gd-Tm),featuring one-dimensional (1D) zigzag Sn chains and two-dimensional (2D) square Sn sheets,spaced by the lutetium cations.Band structure calculations indicate that LuSn2 is metallic.ICSD:422965. |
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| Keywords: | intermetallic high-temperature solid-state reaction crystal structure stannide |
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