79898-39-8Relevant academic research and scientific papers
Coordination and reduction of nitric oxide on a cobalt tetraphenylporphyrin imidazole complex
Tsuji, Kazuhiko,Imaizumi, Masahiko,Oyoshi, Akira,Mochida, Isao,Fujitsu, Hiroshi,Takeshita, Kenjiro
, p. 721 - 725 (1982)
Coordination and reduction of nitric oxide on cobalt tetraphenylporphyrin anchored to imidazole on SiO2 were studied to obtain basic information for development of a novel catalyst. The complex adsorbed nitric oxide, giving a υNO band around 1650 cm-1, which is red shifted from that of gaseous nitric oxide. The shift indicates significant activation of nitric oxide promoted by the dπ orbitals of the cobalt ion, which is influenced through strong π donation from the axially coordinating imidazole ligand. The complex catalytically reduced nitric oxide with hydrogen more effectively than CoTPP on SiO2. A reaction mechanism based on the trans effect of imidazole for the coordination and activation of nitric oxide was proposed.
