Fe
Charge
C.N.
Spin
I.R./Å
+2
4
h
0.63
4s
h
0.64
6
l
0.61
6
h
0.780
8
h
0.92
+3
4
h
0.49
5
0.58
6
l
0.55
6
h
0.645
8
h
0.78
+4
6
0.585
+6
4
0.25