title: 5-(Trifluoro-meth-oxy)isatin.
abstract: THE TITLE COMPOUND [SYSTEMATIC NAME: 5-(trifluoro-meth-oxy)-1H-indole-2,3-dione], C9H4F3NO3, crystallized with two mol-ecules in the asymmetric unit. Inter-molecular N-H⋯O hydrogen bonds link the mol-ecules to form layers parallel to the ab plane. In addition, π-π stacking inter-actions are observed with a centroid-centroid distance of 3.721 (1) Å. The near planarity of the two isatin ring systems is illustrated by by the maximum deviations of 0.023 (1) and 0.025 (1) Å for the N atom in each case.
authors.affiliation: Department of Chemistry, University of the Free State, PO Box 339, Bloemfontein, 9301, South Africa.
authors.forename: M
authors.initials: M
authors.lastname: Schutte
authors.forename: C
authors.initials: C
authors.lastname: Pretorius
authors.forename: H G
authors.initials: HG
authors.lastname: Visser
authors.forename: A
authors.initials: A
authors.lastname: Roodt