9,9′-Dibromo-9,9′-bifluorene

Abstract

Key indicators: single-crystal X-ray study; T = 103 K; mean (C-C) = 0.003 Å; R factor = 0.028; wR factor = 0.070; data-to-parameter ratio = 13.1. 9,90 -Dibromo-9,9 0 -bifluorene, C 26 H 16 Br 2 , has a gauche conformation about the connecting C-C bond [the Br-C-C-Br torsion angle is 59.39 (16) ]. The crystal structure is sustained mainly by an intermolecular C-BrÁ Á Á interaction [3.299 (2) and 3.369 (2) Å ] towards the bifluorene aromatic-ringconnecting C-C bond and a weak C-HÁ Á Á interaction (2.86 and 2.99 Å ) between the two aromatic rings. Related literature