Phosphine Evaluation on a New Series of Heteroleptic Copper(I) Photocatalysts with dpa Ligand [Cu(dpa)( <i>P,P</i> )]BF ₄

Abstract Five new heteroleptic copper(I) complexes ( C1‐5 ) of the type [Cu(dpa)( P,P )]BF 4 based on dipyridylamine (dpa) as N , ligand and commercial diphosphines P ancillary ligands have been synthesised through a simple methodology with high yields. All were thoroughly characterised by spectroscopic spectrometric techniques, well theoretical calculations. These showed Metal to Ligand Charge Transfer (MLCT) absorptions in 300–370 nm region, emission 450–520 region quantum yields lifetimes that depend nature ligand. The photocatalytic performance was evaluated for their use photoredox catalysts ATRA reactions, decarboxylative coupling an Appel‐type reaction. readily available dpa constitutes attractive alternative well‐established phenanthroline typically used photocatalysis.