title: 1,3-Difluoro-benzene.
abstract: The weak electrostatic and dispersive forces between C(δ+)-F(δ-) and H(δ+)-C(δ-) are at the borderline of the hydrogen-bond phenomenon and are poorly directional and further deformed in the presence of other dominant inter-actions, e.g. C-H⋯π. The title compound, C(6)H(4)F(2), Z' = 2, forms one-dimensional tapes along two homodromic C-H⋯F hydrogen bonds. The one-dimensional tapes are connected into corrugated two-dimensional sheets by further bi- or trifrucated C-H⋯F hydrogen bonds. Packing in the third dimension is controlled by C-H⋯π inter-actions.
authors.forename: Michael T
authors.initials: MT
authors.lastname: Kirchner
authors.forename: Dieter
authors.initials: D
authors.lastname: Bläser
authors.forename: Roland
authors.initials: R
authors.lastname: Boese
authors.forename: Tejender S
authors.initials: TS
authors.lastname: Thakur
authors.forename: Gautam R
authors.initials: GR
authors.lastname: Desiraju