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phlilps

木虫 (正式写手)

[求助] 求教晶体学计算! 已有1人参与

已知某种晶体的晶格常数为a≠b≠c,α=β=γ=90o,有相同的原子排列在下列位置: (0.29,0.04,0.22),(-0.29,-0.04,-0.22) (0.79,0.46,0.28),(0.21,0.54,0.72) (-0.29,0.54,-0.22),(0.29,0.46,0.22) (0.21,-0.04,0.72),(0.79,0.04,0.28) 试根据上述数据确定该晶体的空间群.
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and

铜虫 (小有名气)

【答案】应助回帖

感谢参与,应助指数 +1
a≠b≠c,α=β=γ=90o,正交晶系
(0.29,0.04,0.22) (x,y,z)
(-0.29,-0.04,-0.22) (-x,-y,-z)
(0.79,0.46,0.28) (1/2+x,1/2-y,1/2-z)
(0.21,0.54,0.72) (1/2-x,1/2+y,1/2+z)
(-0.29,0.54,-0.22) (-x,1/2+y,-z)
(0.29,0.46,0.22) (x,1/2-y,1/2+z)
(0.21,-0.04,0.72) (1/2-x,-y,1/2+z)
(0.79,0.04,0.28) (1/2+x,y,1/2-z)
根据这些一般等效点确定空间群
2楼2014-12-17 10:28:49
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