title: Crystal structure of (2S/2R,3S/3R)-3-hydroxy-2-phenyl-chroman-4-one.
abstract: In the title mol-ecule, C15H12O3, the C atoms bearing the hy-droxy group and the phenyl ring are disordered over two sets of sites with refined occupancies of 0.573 (7) and 0.427 (7). There is also disorder of the phenyl ring but the hy-droxy group was refined as ordered. The dihedral angles between the benzene ring of the chromane ring system and the phenyl ring are 89.7 (2)° for the major component of disorder and 72.1 (3)° for the minor component. Both disorder components of the the di-hydro-pyran ring are in a half-chair conformation. In the crystal, mol-ecules are linked by pairs of O-H⋯O hydrogen bonds, forming inversion dimers with an R 2 (2)(10) graph-set motif. Weak C-H⋯π inter-actions link these dimers into ladders along [001].
authors: Unité de Recherche de Chimie de l'Environnement et Moléculaire Structurale, CHEMS, Université Constantine1, 25000 , Algeria.
authors: Roumaissa
authors: R
authors: Belguedj
authors: Unité de Recherche de Chimie de l'Environnement et Moléculaire Structurale, CHEMS, Université Constantine1, 25000 , Algeria ; Département Sciences de la Matière, Faculté des Sciences Exactes et Sciences de la Nature et de la Vie, Université Oum El Bouaghi, Algeria.
authors: Sofiane
authors: S
authors: Bouacida
authors: Unité de Recherche de Chimie de l'Environnement et Moléculaire Structurale, CHEMS, Université Constantine1, 25000 , Algeria.
authors: Hocine
authors: H
authors: Merazig
authors: Unité de Recherche de Chimie de l'Environnement et Moléculaire Structurale, CHEMS, Université Constantine1, 25000 , Algeria.
authors: Aissa
authors: A
authors: Chibani
authors: Unité de Recherche de Chimie de l'Environnement et Moléculaire Structurale, CHEMS, Université Constantine1, 25000 , Algeria.
authors: Abdelmalek
authors: A
authors: Bouraiou
keywords: C—H⋯π inter­actions; crystal structure; flavone derivative; hydrogen bonds