title: 9,9-Bis[4-(prop-2-yn-yloxy)phen-yl]-9H-fluorene.
abstract: In the title compound, C(31)H(22)O(2), the bond angle at the C atom belonging to the five-membered ring of the fluorene system is opened to 112.64 (12)°. The two benzene rings are twisted with respect to the fluorene ring system at dihedral angles of 72.81 (6) and 81.83 (6)°. One C(ar-yl)-O-C-C  fragment is extended, with a C-O-C-C torsion angle of -178.77 (13)°, but the other C(ar-yl)-O-C-C  fragment is bent, with a C-O-C-C torsion angle of 64.78 (19)°. Inter-molecular weak C-H⋯O hydrogen bonding is present in the crystal structure.
authors: Kiramat
authors: K
authors: Shah
authors: Muhammad
authors: M
authors: Raza Shah
authors: Seik Weng
authors: SW
authors: Ng
references: Acta Crystallogr A. 2008 Jan;64(Pt 1):112-22
references: 18156677
references: Acta Crystallogr Sect E Struct Rep Online. 2010 Jun 18;66(Pt 7):o1705
references: 21587925