双语化学辞典Chem Lexicon
点群 Point group

Oh 点群特征标表Oh character table

国际符号(Hermann–Mauguin)Hermann–Mauguin symbol m3̄m
OhE8C36C26C43C2(=C4²)i6S48S63σh6σd线性 / 转动linear, rotations二次quadratic
A1g1111111111x²+y²+z²
A2g11−1−111−111−1
Eg2−100220−120(2z²−x²−y², x²−y²)
T1g30−11−1310−1−1(Rx, Ry, Rz)
T2g301−1−13−10−11(xy, xz, yz)
A1u11111−1−1−1−1−1
A2u11−1−11−11−1−11
Eu2−1002−201−20
T1u30−11−1−3−1011(x, y, z)
T2u301−1−1−3101−1
阶 hOrder h48
类数Classes10
所属族Family立方 Cubic
代表分子ExamplesSF₆, [Co(NH₃)₆]³⁺, 立方烷, NaCl 晶体中的 Na⁺ 格位SF₆, [Co(NH₃)₆]³⁺, cubane, the Na⁺ site in NaCl
在 3D 中查看并做对称操作Open in 3D and try the symmetry operationsSF₆ →立方烷cubane →

约化可约表示Reduce a representation

输入可约表示在各类上的特征标,按约化公式 \(n_i = \frac{1}{h}\sum_R g_R\,\chi(R)\,\chi_i(R)^{*}\) 求出各不可约表示出现的次数。

Enter the characters of a reducible representation; the reduction formula gives how many times each irreducible representation occurs.