(a)
(b)
(c)
(d)
Fig. 3.2 Electronic spectra of different d
n configurations. The transitions are assigned basing on
Tanabe–Sugano diagrams. a Co
3 þ d
6 5 T 2g !
5 E g , b Cr
3 þ d
3 4 A 2g !
4 T 2g
4 A 2g !
4 T 1g ðFÞ,
c Cr
2 þ d
4 5 E g !
5 T 2g , d Fe
2 þ d
6 5 T 2g !
5 E g , e Mn
2 þ d
5 no spin allowed electronic transitions,
f Ti
3 þ d
1 2 T 2g !
2 E g , g V
3 þ d
2 3 T 1g ðFÞ !
3 T 2g
3 T 1g ðFÞ !
3 T 1g ðPÞ, h Ni
2 þ d
8 3 A 2g !
3 T 2g
3 A 2g !
3 T 1g ! ðFÞ
3 A 2g !
3 T 1g ðPÞ, i Cu
2 þ d
9 2 E g !
2 T 2g ([1], pp. 406–408)
56
3 Perturbation Theory