The average divergence between experimental and computed peak PL is only 14 nm, with 40% of cases with less than 10 nm difference. The prediction is less accurate for complexes with large or bulky substituents, such as 14 and 15removing neutral substituents for computation may be a reasonable approach to increase the accuracy of predictions. Dinuclear complexes. Determining the structure of bimolecular excited states of mononuclear complexes is somewhat trivial as simply each of the metal centres should be involved in the 3 MMLCT luminescent state. Such cannot be said about dinuclear complexes, where each of the metal centres can form a Pt-Pt contact on its own. For dinuclear complexes 22 and 23 formation of a bimolecular state involving all four metal centres does not seem possible due the large repulsion between peripheral groups of the two molecules, therefore the model used in this work only involves a single Pt-Pt bridge. The model correctly describes the two given excited state dimers as it shows agreement of the predicted PL spectrum with experiment (Fig. ). Above examples serve as evidence that the presented model is useful for studying structure of bimolecular excited states in Pt(II) complexes.