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C 5h
E
2 C 5
2 C 5
σ h
2 S 5
2 S 5
A 11
1
11
1
R z
x 2
+
y 2 , z 2
E 1 22cos72
2 cos 144 22cos72
2 cos 144
( x , y )
E 2
2
2 cos 144
2 cos 72
2
2 cos 144
2 cos 72
( x 2
y 2 , xy )
A 11
1
1
1
1
z
E 1 22cos72
2 cos 144
2
2 cos 72
2 cos 144
( R x , R y ) xz , yz )
E 2
2
2 cos 144
2 cos 72
2
2 cos 144
2 cos 72
C 6h
E
2 C 6
2 C 3
C 2
i
2 S 3
2 S 6
σ h
A g 11111111 R z
x 2
+
y 2 , z 2
B g
1
11
11
11
1
E 1g 21
1
221
1
2 R x , R y ) xz , yz )
E 2g
2
1
122
1
12 ( x 2
y 2 , xy )
A u 1111
1
1
1
1
z
B u
1
11
1
11
11
E 1u 21
1
2
2
112( x , y )
E 2u
2
1
12
211
2
A12.2.5 D n Groups
The D n groups are rotational sub-roups of the D n d and D n h groups that include the hori-
zontal C 2 axes. These should be used to simplify the projection operator method for D n d
and D n h .
D 2 EC 2 ( z ) C 2 ( y ) C 2 ( x )
A
1
1
1
1
x 2 , y 2 , z 2
B 1
1
1
1
1
z , R z
xy
B 2
1
1
1
1
y , R y
xz
B 3
1
1
1
1
x , R x
yz
D 3
E
2 C 3
3 C 2
A 1 111
x 2
+
y 2 , z 2
A 2 11
1
z , R z
E
2
1
0
( x , y ), ( R x , R y ) x 2
y 2 , xy ), ( xz , yz )
C 4 2 )2 C 2
2 C 2
D 4 E2C 4 C 2 (
=
A 1 11 1 11
x 2
+
y 2 , z 2
A 2 11 1
1
1
z , R z
x 2
y 2
B 1
1
1
1
1
1
B 2
1
1
1
1
1
xy
E 20
2
0
0
( x , y ), ( R x , R y ) xz , yz )
2 C 5 2
D 5
E
2 C 5
5 C 2
A 1 11
1
1
x 2
+
y 2 , z 2
A 2 11
1
1
z , R z
E 1 22cos72
2 cos 144 0( x , y ), ( R x , R y ) xz , yz )
E 2
2
2 cos 144
2 cos 72
0
( x 2
y 2 , xy )
 
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