The well-known system of dinuclear Cu(I) complexes bridged by 2-(diphenylphosphino)pyridine (PyrPhos) derivatives Cu2X2L3 and Cu2X2LP2 (L = bridging ligand, P ancillary ligand) goes along with endless variation options for tunability. In this work, the influence substituents modifications on phosphine moiety NP-bridging ligand was investigated. previous studies, location lowest unoccupied molec...