Relativistic calculations of aminotroponiminate complexes containing group 15 (P, As, Sb, Bi) elements

► Our study suggest that exist several modifications to the molecular structure of aminotroponiminate complexes when downwards into the group 15. ► These modifications have effects over the electronic structure, specially regarding with their ability to act as “phosphine”-type ligands. ► Also they affect the ring currents related to the heteroatomic and seven member cycles.