Sequential metal ion assembly in cyclic phenylazomethine

Masayoshi Higuchi, Ryo Shomura, Yuhki Ohtsuka, Akari Hayashi, Kimihisa Yamamoto, Dirk G. Kurth

Research output: Contribution to journalArticlepeer-review

17 Citations (Scopus)


(Chemical Equation Presented) Cyclic phenylazomethines with methylene spacers (CPA-M) are obtained by dehydration of diamine with diketone. During the titration of CPA-M 4mer with FeCl 3, we observe two consecutive isosbestic points in the UV-vis spectra. We conclude that complexation occurs in two consecutive steps. Our analysis suggests that the stepwise metal ion assembly is caused by a difference in the basicity of the imine conformers. Metal ion binding first occurs at the Z imines followed by coordination to the E imine. Finally, metal ion assembly in this compound can be controlled electrochemically.

Original languageEnglish
Pages (from-to)4723-4726
Number of pages4
JournalOrganic letters
Issue number21
Publication statusPublished - Oct 12 2006
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Biochemistry
  • Physical and Theoretical Chemistry
  • Organic Chemistry


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