Metal complexes of π-expanded ligands (2): Synthesis and characterizations of bis[2-[(octylimino)methyl]-1-pyrenolato-N,O] palladium(II) and the stabilized vacant dx2-y2 orbital

A Pd(II) complex of the pyrene-based ligand was synthesized and characterized. Although this complex shows the nearly identical crystal structure with that of Pt complex, the Kohn-Sham orbitals containing d-orbital coefficient were stabilized and the resultant blue-shift in absorption spectrum was observed.74