Branching Ratio and L2+L3 Intensities of 3d-Transition Metals in Phthalocyanines and the Amine Complexes (STATES AND STRUCTURES-Crystal Information Analysis)

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L2,3 inner-shell excitation spectra were obtained by electron energy-loss spectroscopy (EELS) for the divalent first transition series metals in phthalocyanine complexes. It was found that the value of normalized total intensity of I(L2+L3) was nearly proportional to the formal electron vacancies of each 3d-state, and the values of the branching ratio, I(L3)/I((L2+L3), represented a high spin state rather than low spin state. EELS was also applied to charge-transfer complexes of FePc with amine. It was concluded that their I(L2+L3) intensity of Fe showed the decrease in vacancies of 3d-states on the formation of the charge transfer complex, which suggests some electron transfer from the amine to Fe in phthalocyanine.