Role of fluorine interactions in the solid state structure and photophysical properties of 3,5-disubstituted-2-(2′-pyridyl)pyrrole Pd(II) complexes

摘要

The analysis of the crystal structures of two new mononuclear Pd(II) compounds, containing 3,5-disubstituted-2-(2′-pyridyl)pyrrole ligands, reveals that the use of fluoroaliphatic (1) versus aliphatic (2) substituting groups on the HL ~n ligand induces substantial changes in their supramolecular architectures. Despite the common molecular geometry suitable for the formation of mixed "aryl embraces", "tetris-like" columnar heterochiral (1) and helicoidal chiral (2) organizations are formed. The resulting supramolecular packing affects their solid state photophysical properties.