Td molecular point group
= Td molecular point group
{c}
{title2=$T_d$}
The 24-operation molecular <point group> of an ideal regular <tetrahedron>, including improper operations. Its <irreducible representations> are $A_1,A_2,E,T_1,T_2$, with dimensions $1,1,2,3,3$. The polar-vector representation is $T_2$, the axial-vector representation is $T_1$, and symmetric quadratic functions transform as $A_1+E+T_2$.