title: 3-Benzyl-6-isopropyl-5-phen-oxy-3H-1,2,3-triazolo[4,5-d]pyrimidin-7(6H)-one.
abstract: In the title compound, C(20)H(19)N(5)O(2), all atoms of the 1,2,3-triazolo[4,5-d]pyrimidine ring system are essentially coplanar [maximum deviation = 0.015 (2) Å], indicating the existence of a conjugate system in which each carbon and nitrogen atom is sp(2) hybridized and ten π electrons (three from carbon atoms and seven from nitrogen atoms) constitute an aromatic heterocycle. The ring system forms dihedral angles of 68.37 (10) and 71.57 (9)° with the phenyl rings. The crystal packing is stabilized by van der Waals inter-actions and intermolecular C-H⋯π interactions.
authors.forename: Shou-Heng
authors.initials: SH
authors.lastname: Deng
authors.forename: Hong-Mei
authors.initials: HM
authors.lastname: Wang
authors.forename: Ping
authors.initials: P
authors.lastname: Chen
authors.forename: Jun-Kai
authors.initials: JK
authors.lastname: Ma
authors.forename: Feng-Jun
authors.initials: FJ
authors.lastname: Cao