Kinetics and mechanisms of the formation of a sitting-atop complex of N-alkylporphyrin with Al(III) in moist acetonitrile

✍ Scribed by Keiichi Tsukahara; Yoshiaki Onoue; Naoko Fujiwara

• Publisher: John Wiley and Sons
• Year: 2001
• Tongue: English
• Weight: 100 KB
• Volume: 05
• Category: Article
• ISSN: 1088-4246
• DOI: 10.1002/jpp.372

✦ Synopsis

The formation of a sitting-atop complex of a N-alkylporphyrin, containing a 6-hydroxyhexyl group, with Al ^3+^ was studied in moist acetonitrile by equilibrium and kinetic measurements. A sandwich type of metalloporphyrin, where a metal ion binds two N-alkylporphyrins, appears to be formed under the conditions that porphyrins exist in excess over a metal ion. When a large excess of metal ion was used, a 1:1 type of sitting-atop complex of Al(III) N-alkylporphyrin was produced through formation of the sandwich type of Al(III) N-alkylporphyrin.