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Superazaporphyrins: Meso-Pentaazapentaphyrins and One of Their Low-Symmetry Derivatives


  • This work was partly supported by a Grant-in-Aid for Scientific Research on Innovative areas (No. 20108007, “pi-Space”), Scientific Research (B) (No. 23350095), and Young Scientist (B) (No. 24750031) from the Ministry of Education, Culture, Sports, Science, and Technology (MEXT). The authors thank Prof. Takeaki Iwamoto, Dr. Shintaro Ishida, and Dr. Soji Shimizu at Tohoku University for X-ray measurements. Some of the calculations were performed using supercomputing resources at Cyberscience Center, Tohoku University.


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Supersized: Three pentaazapentaphyrin derivatives, that is, the superazaporphyrins (SAzPs), as well as a superphthalocyanine (SPc) and a mixed low-symmetry derivative have been prepared and characterized. Decaaryl SAzPs have a distorted (4n+2) π structure and show the Q bands at about λ=840–880 nm. These compounds are relatively air stable.