title: Crystal structure of 3-(4-hy-droxy-phen-yl)-2-[(E)-2-phenyl-ethen-yl]quinazolin-4(3H)-one.
abstract: The title compound, C22H16N2O2 {systematic name: 3-(4-hy-droxy-phen-yl)-2-[(E)-2-phenyl-ethen-yl]quinazolin-4(3H)-one}, consists of a substituted 2-[(E)-2-aryl-ethen-yl]-3-aryl-quinazolin-4(3H)-one skeleton. The substituents at the ethyl-ene fragment are located in trans positions. The phenyl ring is inclined to the quinazolone ring by 26.44 (19)°, while the 4-hy-droxy-phenyl ring is inclined to the quinazolone ring by 81.25 (8)°. The phenyl ring and the 4-hy-droxy-phenyl ring are inclined to one another by 78.28 (2)°. In the crystal, mol-ecules are connected via O-H⋯O hydrogen bonds, forming a helix along the a-axis direction. The helices are linked by C-H⋯π inter-actions, forming slabs parallel to (001).
authors.affiliation: Institute of Technology of Organic Chemistry, Faculty of Materials Science and Applied Chemistry, Riga Technical University, Str. P. Valdena 3/7, Riga, LV 1048, Latvia.
authors.forename: Inese
authors.initials: I
authors.lastname: Mierina
authors.affiliation: Latvian Institute of Organic Synthesis, Str. Aizkraukles 21, Riga, LV 1006, Latvia; Institute of Technology of Organic Chemistry, Faculty of Materials Science and Applied Chemistry, Riga Technical University, Str. P. Valdena 3/7, Riga, LV 1048, Latvia.
authors.forename: Dmitrijs
authors.initials: D
authors.lastname: Stepanovs
authors.affiliation: Institute of Synthetic Chemistry, Kaunas University of Technology, Str. K. Barsausko 59, Kaunas, LT 51423, Lithuania; Institute of Technology of Organic Chemistry, Faculty of Materials Science and Applied Chemistry, Riga Technical University, Str. P. Valdena 3/7, Riga, LV 1048, Latvia.
authors.forename: Jolita
authors.initials: J
authors.lastname: Kuginyte
authors.affiliation: Latvian Institute of Organic Synthesis, Str. Aizkraukles 21, Riga, LV 1006, Latvia; Institute of Technology of Organic Chemistry, Faculty of Materials Science and Applied Chemistry, Riga Technical University, Str. P. Valdena 3/7, Riga, LV 1048, Latvia.
authors.forename: Artur
authors.initials: A
authors.lastname: Janichev
authors.affiliation: Institute of Technology of Organic Chemistry, Faculty of Materials Science and Applied Chemistry, Riga Technical University, Str. P. Valdena 3/7, Riga, LV 1048, Latvia.
authors.forename: Mara
authors.initials: M
authors.lastname: Jure
keywords: 2,3-disubstituted quinazolin-4(3H)-one; crystal structure; hydrogen bonding; styrylquinazolinone conjugation system