Rac-3,3′-Bis(4-fluorophenyl)-3,3′-dihydroxy-2,3,2′, 3′-tetrahydro-[2,2′]biindenyl-1,1′-dione

Shigeru Ohba, Yohei Yamamoto, Koichi Tanaka

Research output: Contribution to journalArticlepeer-review


The C30H20F2O4 compound obtained as a byproduct in the preparation of biindenylidene compounds was discussed. It was found that the central C11-C11i bond was a single bond, which corresponds to no photochromic property of the compound. The photochromism of these crystals seems to be due to the biradical caused by breaking the π-bond at the center of the biindenylidene moiety. The results show that the angle between the C10-C7 and its symmetry related bond vector was 25.8 (1)°, and the dihedral angle between the two fluorophenyl rings was 12.15 (10)°.

Original languageEnglish
Pages (from-to)o1261-o1262
JournalActa Crystallographica Section E: Structure Reports Online
Issue number9
Publication statusPublished - 2003 Sept

ASJC Scopus subject areas

  • General Chemistry
  • General Materials Science
  • Condensed Matter Physics


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