title: Crystal structure of 2-[9-(2-hy-droxy-phen-yl)-1,8-dioxo-1,2,3,4,5,6,7,8,9,10-deca-hydro-acridin-10-yl]acetic acid.
abstract: The title compound, C21H21NO5, crystallizes with two mol-ecules in the asymmetric unit. In each mol-ecule, the central 1,4-di-hydro-pyridine ring adopts a shallow sofa conformations (with the C atom bearing the phenol ring as the flap), whereas the pendant cyclo-hexene rings both have twisted-boat conformations. Each mol-ecule features an intra-molecular O-H⋯O hydrogen bond, which closes an S(8) ring. In the crystal, the mol-ecules are linked by O-H⋯O, C-H⋯O and C-H⋯π inter-actions, forming a three-dimensional network.
authors: Department of Physics, Faculty of Sciences, Erciyes University, 38039 Kayseri, Turkey.
authors: Mehmet
authors: M
authors: Akkurt
authors: Department of Chemistry, Keene State College, 229 Main Street, Keene, NH 03435-2001, USA.
authors: Jerry P
authors: JP
authors: Jasinski
authors: Chemistry and Environmental Division, Manchester Metropolitan University, Manchester M1 5GD, England; Chemistry Department, Faculty of Science, Minia University, 61519 El-Minia, Egypt.
authors: Shaaban K
authors: SK
authors: Mohamed
authors: Chemistry Department, Faculty of Science, Sohag University, 82524 Sohag, Egypt.
authors: Omyma A Abd
authors: OA
authors: Allah
authors: Chemistry Department, Faculty of Science, Sohag University, 82524 Sohag, Egypt.
authors: Asmaa H A
authors: AH
authors: Tamam
authors: Kirkuk University, College of Science, Department of Chemistry, Kirkuk, Iraq.
authors: Mustafa R
authors: MR
authors: Albayati
keywords: C—H⋯π inter­actions; acetic acid; acridines; crystal structure; hydrogen bonding