Chemistry Reference
In-Depth Information
Figure 7.7 H
€
uckel MOs for the
p
electrons in benzene (real form)
We then have
P
ð
r
Þ¼r
a
þr
b
¼ x
2
1
þx
2
2
þx
2
3
þx
2
4
þx
2
5
þx
2
6
ð
7
:
99
Þ
p
for the electron density and the charge distribution of the
electrons is
uniform (one electron onto each carbon atom), as expected for an
alternant hydrocarbon; whereas the spin density is zero:
Q
ð
r
Þ¼r
a
r
b
¼
0
ð
7
:
100
Þ
as it must be for a singlet state.
