The synthesis and properties of iron, ruthenium, and osmium octabutoxynaphthalocyanine

Abstract

New series of iron, ruthenium, and osmium octabutoxynaphthalocyanines were synthesized by inserting corresponding metals into the metal-free octabutoxynaphthalocyanine. Although preparation of axial ligand-free iron octabutoxynaphthalocyanines was reported before, we could not reproduce the synthesis by following the reported method. We attributed the failure to the instability of the iron octabutoxynaphthalocyanines. Bis-ligation increased the stability of the iron complex but only sufficiently for characterization. The application of iron complexes will be limited by their instability. However, ruthenium and osmium formed stable complexes with this macrocycle ring but with significantly lower reaction yields. These new complexes were characterized by NMR, UV-vis, and mass spectrometry.

The synthesis and characterization of a group of transition metal octabutoxynaphthalocyanines and the absorption and emission properties of the Co, Rh, Ir, Ni, Pd and Pt members of this group

“…However, the metal complexes studied thus far have mostly been limited to the first row transition metal complexes. Although the synthesis of Ru and Os Nc(OBu) 8 complexes was reported recently [15], only PdNc(OBu) 8 has been studied for its photophysical and photochemical properties from the second and third row transition metals [10, 11]. …”