双语化学辞典Chem Lexicon
点群 Point group

D6d 点群特征标表D6d character table

国际符号(Hermann–Mauguin)Hermann–Mauguin symbol 12̄2m
D6dE2S122C62S42C32S12⁵C26C2′6σd线性 / 转动linear, rotations二次quadratic
A1111111111x²+y², z²
A21111111−1−1Rz
B11−11−11−111−1
B21−11−11−11−11z
E12√310−1−√3−200(x, y)
E221−1−2−11200(x²−y², xy)
E320−2020−200
E42−1−12−1−1200
E52−√310−1√3−200(Rx, Ry)(xz, yz)
阶 hOrder h24
类数Classes9
所属族FamilyDnd
代表分子Examples交错式二苯铬staggered bis(benzene)chromium

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.