SATELLITE STRUCTURES IN THE ESCA SPECTRA OF (DIPHTHALOCYANINATO)LANTHANIDES(III) AND (DIPHTHALOCYANINATO)ACTINIDES(IV)

Recently, X-ray photoelectron spectroscopy (ESCA) has been successfully applied to the study on the electronic structure of f transition metal complexes. Special attention has been directed toward the satellites observed in the Ln 3d and An 4f photoelectron lines, since they are a potential source of information on the nature of bonding. Some attempts have been made to understand these particular satellites, though most of the suggested mechanisms are unsatisfactory by themselves to explain the sharp variation in intensity throughout the Ln and An series. Coherent explanation for the satellite origin is now essential to the proper understanding of the electronic structure of f elements. In view of the interest in satellite structure, we have investigated ESCA spectra of a series of (diphthalocyaninato)lanthanides (H[LnPc2] (Ln = La, Ce, Pr, Nd, and Gd) and actinides AnPc2 (An = Th and U)). In particular, the satellites accompanying lanthanide 3d5/2 and actinide 4d5/2 signals have been examined. © 1979, American Chemical Society. All rights reserved.