Symbols Flashcards
Symbols used for irreducible representations and their meaning
1
Q
What does ‘A’ mean?
A
Singly degenerate and totally symmetrical about the principal axis
2
Q
What does ‘B’ mean?
A
Singly degenerate and anti-symmetric about the principal axis.
3
Q
What does E mean?
A
Doubly degenerate
4
Q
What does T mean?
A
Triply degenerate
5
Q
What does subscript ‘1’ mean?
A
Means that the property is symmetric under C2’ (or sigma v if no C2’)
6
Q
What does subscript ‘2’ mean?
A
That the property is anti-symmetric under C2’ ( or sigma v if no C2’ )
7
Q
What does superscript ‘ mean?
A
Symmetric under sigma h
8
Q
What does superscript ‘’ mean?
A
Means anti-symmetric under sigma h
9
Q
What do subscripts g and u mean?
A
Gerade (symmetric under i) and Ungerade (anti-symmetric under i)
