INTENSITY PARAMETERS OF 4F-4F-TRANSITIONS IN THE EU(DIPIVALOYLMETHANATE)(3) 1,10-PHENANTHROLINE COMPLEX

We present and discuss experimental and theoretical relevant intensity parameters of 4f-4f transitions in the Eu(dipivaloylmethanate)(3) 1,1 0-phenanthroline complex which is a highly luminescent material under UV excitation. The theoretical analysis is based on; the crystallograp hic data of the compound and on a theoretical scheme which lakes into account the forced electric dipole and dynamic coupling mechanisms as developed in previous work. The good agreement found between theory an d experiment provides support to the model used and indicates that, at least in the present case, further contributions to the intensities b eyond the second-order theory are of no relevance.