| Popis: |
Electronic absorption spectra for complexes CpFe(dppe)X [with X = Cl, I and CN; dppe = (Ph) 2 PCH 2 CH 2 P(Ph) 2 ; Cp = η 5 -C 5 H 5 ] and the cationic derivative [CpFe(dppe)NCCH 3 ]PF 6 in different solvents have been measured. The lower energy bands were assigned to iron d - d orbital transitions on the bais of intensities, solvent effects ad extended Huckel MO calculations. The complexes CpFe(dppe)X (with X = Cl and I) undergo ionization in polar solvents to give the cationic solvated species [CpFe(dppe) (solvent)] + . This behaviour can be explained on the basis of the theoretical calculations. |
