However,
with species containing d
4 and d
5 ions there are complications [Mn(CN)6]
3–
has magnetic moment of two unpaired electrons while [MnCl6]
3– has a
paramagnetic moment of four unpaired electrons [Fe(CN)6]
3– has magnetic
moment of a single unpaired electron while [FeF6]
3– has a paramagnetic
moment of five unpaired electrons [CoF6]
3– is paramagnetic with four
unpaired electrons while [Co(C2O4)3]
3– is diamagnetic