Synthesis, structure and π-delocalization of a phosphaalkenyl based neutral PNP-pincer

► A novel bis-phosphaalkenyl based PNP-pincer was prepared. ► The crystal structure indicates delocalization over the entire π-system including all three donor sites. ► DFT calculations and UV-Vis measurements support the interpretation of the structural findings. ► The coordination behavior towards Cu(I) is explored on a preliminary base.