Synthesis and Photodynamics of Tetragermatetrathia[8]circulene

Shuhei Akahori, Hayato Sakai, Taku Hasobe, Hiroshi Shinokubo, Yoshihiro Miyake

Research output: Contribution to journalArticlepeer-review

33 Citations (Scopus)


Tetragermatetrathia[8]circulene has successfully been synthesized from tetraiodotetrathienylene through palladium-catalyzed germylation and rhodium-catalyzed intramolecular dehydrogenative cyclization. A single-crystal X-ray diffraction analysis elucidated that tetragermatetrathia[8]circulene has a highly symmetric, planar, and rigid structure. DFT calculations suggested that LUMO of tetragermatetrathia[8]circulene is stabilized due to σâÏ€∗ interactions between σ∗ orbitals of the Ge-C bonds and Ï€∗ orbitals of the thiophene rings. The excited dynamics of tetragermatetrathia[8]circulene have also been found to be significantly affected by the heavy-atom effect of the germanium atom.

Original languageEnglish
Pages (from-to)304-307
Number of pages4
JournalOrganic Letters
Issue number1
Publication statusPublished - 2018 Jan 5

ASJC Scopus subject areas

  • Biochemistry
  • Physical and Theoretical Chemistry
  • Organic Chemistry


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