University of Exeter

Tetragonal: D2 (222) - Products

Exeter Symmetry Pages

Irreducible Representation Products:

product A B1 B2 B3
A A B1 B2 B3
B1 B1 A B3 B2
B2 B2 B3 A B1
B3 B3 B2 B1 A

Dipole Transition Products:

For the D2 point group, the irreducible representation of the dipole operator is B1+B2+B3. Transitions that are dipole forbidden are indicated by parentheses.

product(B1+B2+B3)product A B1 B2 B3
A (B1+B2+B3) A+B2+B3 A+B1+B3 A+B1+B2
B1 A+B2+B3 (B1+B2+B3) A+B1+B2 A+B1+B3
B2 A+B1+B3 A+B1+B2 (B1+B2+B3) A+B2+B3
B3 A+B1+B2 A+B1+B3 A+B2+B3 (B1+B2+B3)