title: (4E)-4-[(2-Hy-droxy-anilino)methyl-idene]-1-phenyl-pyrazolidine-3,5-dione dimethyl sulfoxide hemisolvate.
abstract: The asymmetric unit of the title compound, C16H13N3O3·0.5C2H6OS, is composed of two independent pyrazolidine-3,5-dione mol-ecules and one dimethyl sulfoxide solvent mol-ecule. In each pyrazolidine-3,5-dione mol-ecule, an intra-molecular N-H⋯O hydrogen bond forms an S(5)S(6) motif. In the crystal, pairs of each independent pyrazolidine-3,5-dione mol-ecule are linked by N-H⋯O hydrogen bonds, forming dimers with R 2 (2)(8) motifs. These dimers are connected with the other mol-ecules through the solvent mol-ecules via O-H⋯O hydrogen bonds, forming ribbons along the b-axis direction. C-H⋯π inter-actions connect the ribbons. C-H⋯O interactions also occur.
authors.affiliation: Department of Physics, Faculty of Sciences, Erciyes University, 38039 Kayseri, Turkey.
authors.forename: Mehmet
authors.initials: M
authors.lastname: Akkurt
authors.affiliation: Chemistry and Environmental Division, Manchester Metropolitan University, Manchester, M1 5GD, England ; Chemistry Department, Faculty of Science, Minia University, 61519 El-Minia, Egypt.
authors.forename: Shaaban K
authors.initials: SK
authors.lastname: Mohamed
authors.affiliation: Department of Organic Chemistry, Faculty of Science, Institute of Biotechnology, Granada University, Granada E-18071, Spain ; Department of Chemistry, Sohag University, 82524 Sohag, Egypt.
authors.forename: Mahmoud A A
authors.initials: MA
authors.lastname: Elremaily
authors.affiliation: Department of Chemistry, University of Leicester, Leicester, England.
authors.forename: Eman A
authors.initials: EA
authors.lastname: Ahmed
authors.affiliation: Kirkuk University, College of Science, Department of Chemistry, Kirkuk, Iraq.
authors.forename: Mustafa R
authors.initials: MR
authors.lastname: Albayati