Phthalocyaninatoiron complexes with tridentate ligands

Iron phthalocyanine was reacted with an excess of the tridendate ligand 2,4,6-tri-(4′-pyridyl)-s-triazine (tri, 1) to afford the monomeric complex PcFe(tri)2 (2) while it gave the polymer [PcFe(tri)]n (3) when equimolar amounts of the substrates were used. The ligand 1 could be coordinated to three phthalocyaninine units by reacting PcFe(t-buNC)2 (4) and (t-bu)4PcFe(t-buNC)2 (5) to give the corresponding trimer, tri[R4PcFe(t-buNC)]3, R=H (10) and R=t-bu (11). In addition to IR, UV–Vis and NMR spectroscopy, the newly formed complexes were also characterized by 57Fe Mößbauer spectroscopy.