Search

In the present study we describe a lutetium(III) bis(phthalocyaninate) complex which contains eight acetylbenzo(15-crown-5) units. The starting compound was diethyl (3,4-dicyanophenyl)acetoxybenzo(15-crown-5)malonate (1). The synthesis of the desired compound was accomplished by the reaction of the o-dicyano compound (1) with lutetium acetate in hexanol in the presence of 1,8-diazabicyclo[5,4,0]undec-7-ene (DBU) as a strong base. The ESR spectrum confirmed the radical nature of the complex. [ABSTRACT FROM AUTHOR]

Octakis(hexylthio)vanadyl porphyrazinate, (VOPz), was prepared from vanadyl(IV) sulfate and metal-free porphyrazine (H2Pz), which was synthesized by the cyclotetramerization of the corresponding dinitrile derivative and further treatment with trifluoroacetic acid. Intense absorption peaks at 699 and 352 nm in the electronic spectrum indicated the C4v symmetry of VOPz. ESR studies, both in solution and in powder form, confirmed the proposed structure. [ABSTRACT FROM AUTHOR]

Chlorooctakis(octylthio)porphyrazinatoiron(III) (FePzCl) was prepared by the reaction of metal-free porphyrazine with iron(II) acetate and further treatment with HCl solution. The monomeric bisaxial complex FePz(py)2 as well as the bridged complex [FePz(pyz)]n were formed as stable complexes by reacting FePzCl with pyridine or pyrazine, respectively. These complexes were characterized by elemental analysis and spectroscopic methods. [ABSTRACT FROM AUTHOR]