{2-[(9,9-Dihexylfluoren-2-yl)carbonyl]phenyl}(4-methoxyphenyl)methanone

• Main Authors: P. Narayanan, K. Sethusankar, Meganathan Nandakumar, Arasambattu K. Mohanakrishnan
• Format: Article
• Language: English
• Published: International Union of Crystallography 2012-07-01
• Series: Acta Crystallographica Section E
• Online Access: http://scripts.iucr.org/cgi-bin/paper?S1600536812026773

In the title compound, C40H44O3, the fluorene ring system is essentially planar, with a maximum deviation of 0.075 (3) Å, and forms dihedral angles of 70.62 (8) and 70.31 (8)° with the mean planes of the central benzene ring and the methoxyphenyl ring, respectively. Both the hexyl side chains have different conformations, i.e. an anti–gauche–anti–gauche conformation with C—C—C—C torsion angles of −169.3 (2), 74.2 (4), −178.0 (3) and −76.0 (6)° for one hexyl side chain and an anti–anti–anti–gauche conformation with C—C—C—C torsion angles of −177.9 (2), −176.5 (3), 171.7 (4) and 80.4 (9)° for the other. Four C atoms in one and two C atoms in the other hexyl side chains are each disordered over two sets of sites, with occupancy factors of 0.761 (3):0.239 (3) and 0.660 (6):0.340 (6). In the crystal, molecules are via pairs of C—H...O hydrogen bonds, forming inversion dimers and resulting in R22(28) graph-set motifs.