Construction of stable redox systems composed of the crowded triarylphosphines

Shigeru Sasaki, Fumiki Murakami, Midori Murakami, Rainy Chowdhury, Katsuhide Sutoh, Masaaki Yoshifuji

Research output: Contribution to journalArticlepeer-review

7 Citations (Scopus)


Extremely crowded triarylphosphines were synthesized by the reaction of arylcopper(I) reagents with chlorophosphines, and the relationship between molecular structure and redox properties was studied by X-ray crystallography and cyclic voltammetry. As the substituent on phosphorus became bulkier, bond lengths and angles around phosphorus atom became longer and larger, and oxidation potential was significantly lowered. Especially, tris(2,4,6-triisopropylphenyl)phosphine had an extremely crowded structure and was oxidized to a stable radical cation at an extraordinarily low oxidation potential. Novel redox systems possessing the crowded triarylphosphine structure as one of the redox sites were designed and synthesized.

Original languageEnglish
Pages (from-to)1477-1479
Number of pages3
JournalPhosphorus, Sulfur and Silicon and Related Elements
Issue number6-7
Publication statusPublished - 2002


  • Bond angle
  • Bond length
  • Oxidation potential
  • Redox systems
  • Triarylphosphine

ASJC Scopus subject areas

  • Biochemistry
  • Organic Chemistry
  • Inorganic Chemistry


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