title: (6Z)-3,5-Bis(4-fluoro-phen-yl)-6-(1-hy-droxy-ethyl-idene)cyclo-hex-2-en-1-one.
abstract: In the title compound, C(20)H(16)F(2)O(2), the cyclo-hex-2-en-1-one ring adopts a distorted envelope conformation and the dihedral angles between its six-atom mean plane and the fluorophenyl rings are 38.9(8) and 82.3(1)°. The two fluoro-phenyl rings are oriented at an angle of 77.3 (3)°. The long hy-droxy O-H bond length of 1.22 (3) and the H⋯O distance of 1.28 (3) Å, together with a longer than expected C=O bond length [1.290 (2) Å] in the hy-droxy(en-1-one) group, indicate sharing of the H atom as O⋯H⋯O between the two O atoms and the influence of electron delocalization. Weak C-H⋯O inter-molecular inter-actions form an infinite two-dimensional network in (011).
authors.forename: Jerry P
authors.initials: JP
authors.lastname: Jasinski
authors.forename: James A
authors.initials: JA
authors.lastname: Golen
authors.forename: S
authors.initials: S
authors.lastname: Samshuddin
authors.forename: B
authors.initials: B
authors.lastname: Narayana
authors.forename: H S
authors.initials: HS
authors.lastname: Yathirajan