Macrocyclic porphyrazine-type compounds, metal derivatives thereof and process for their preparation
申请人:Universita Degli Studi Di Roma “La Sapienza”
公开号:US06337395B1
公开(公告)日:2002-01-08
The invention relates to new macrocyclic phthalocyanine-like systems. In particular, object of the invention are new macrocyclic porphyrazine-type compounds and metal derivatives thereof, in which heterocycle rings are provided at the periphery of the inner porphyrazine fragment. A further object of the invention is a process for obtaining, as an example, tetra(thiadiazolo)porphyrazine, or tetra(selenediazolo)porphyrazine, by means of cyclotetramerization of the monomers 3,4-dicyano-1,25-thiadizole, or 3,4-dicyano-1,2,5-selenodiazole with metallorganico or inorganic salts, in organic solvents, extraction, if any, of the metal from the complexes thus formed by treatment with strong acids to obtain tetra(thiadiazolo)porphyrazine, or tetra(selenediazolo)porphyrazine, and by treatment, if any, of these compounds with a metallorganic or inorganic salt to obtain the metal derivatives thereof different from those previously extracted.
Single crystals of tetrakis(thiadiazole)porphyrazine and the corresponding metal(II) derivatives, MTTDPz (M=H2, Fe, Co, Ni, Cu, and Zn) were grown by sublimation under reduced pressure with continuous N2 gas flow. Their structures, obtained by X-ray crystallographic analysis, depend significantly on the central metal ion, and the M=Ni and Cu derivatives exhibit polymorphism. They can be classified