VIBRONIC INTENSITIES IN THE CS2ZRBR6-UBR6 2- SYSTEM

ln this paper, the symmetrized vibronic crystal field-ligand polarizat ion method is reviewed on a critical basis. A general formalism is put forward, and it is applied with reference to the \(3)H(4)A(1)>c <---- >\(H6T2)-H-3-T-b> electronic transition of the Cs2ZrBr6:UB62- system. The calculation of the vibronic intensities associated with the three false origins nu(3)(tau(1u)), nu(4)(tau(1u)) and nu(6)(tau(2u)) is car ried out, assuming that the coupling among the internal and the extern al vibrations is small enough to be neglected. Though, the simplicity of our model calculation a fair agreement with experiment is found.