问题：求助关于点群的对称性
类型：求助 (悬赏分:3分)
提问：lanlee
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版块：晶体培养、研究()
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时间：2007-09-26 10:35:41 编辑加入/取消收藏订制/取消短消息举报该贴

求助关于点群的对称性

我做的是关于 La2CaB10O19，这个化合物是单斜晶系，C2空间群，La是十配位的，钙是八配位，
La2CaB10O19 is a biaxial single crystal which belongs to the monoclinic system with space group C2 with two formula units per cell. The lattice parameters of LCB crystal are a=11.043 Å b=6.563 Å c=9.129 Å α =β =90°, and γ=91.47°. The LCB crystal is a member of the newly synthesized
NLO borate crystals RCB （R2CaB10O19） family, where R represents rare-earth elements. The crystal structure contains B5O12 double-ring pentaborate groups, which are linked together forming infinite two-dimensional double layer. The layer is situated almost perpendicularly to the c axis of the crystal. The La atoms are located in layers, while Ca atoms are located between two layers
我想请教的是La位置具有什么点对称性，还有Ca具有什么点对称性，要知道这个的话，需要什么数据！
谢谢！

[该帖子已被lanlee在2007-09-26 17:09:44编辑过]

回复人：rainbourle,▲ () 时间：2008-12-12 22:59:53 编辑	1楼
您好我也正在做着类似的工作可以交流吗我的QQ号 6449439

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