A monomeric bowl-like pyrogallol[4]arene Ti12 coordination complex

Abstract

Herein, an unprecedented monomeric bowl-like coordination complex, Ti₁₂PgC₃ (PgC₃ = C-propylpyrogallol[4]arene), has been successfully synthesized. To the best of our knowledge, Ti₁₂PgC₃ not only presents the first pyrogallol[4]arene-based titanium coordination complex, but also the highest nuclearity titanium coordination complex in the metal–calixarene system. In addition, this titanium coordination complex can effectively degrade the methylene blue (MB) dye under sunlight.