title: 6-Methyl-2,7-diphenyl-1,4-diazepan-5-one.
abstract: The title compound, C(18)H(20)N(2)O, crystallizes with two mol-ecules in the asymmetric unit. The seven-membered ring in both mol-ecules adopts a distorted chair conformation. The dihedral angles between the phenyl rings are 43.2 (1) and 54.7 (1)° in the two mol-ecules. The crystal packing features N-H⋯O and weak N-H⋯π and C-H⋯π inter-actions.
authors.forename: S Sathish
authors.initials: SS
authors.lastname: Kumar
authors.forename: Helen P
authors.initials: HP
authors.lastname: Kavitha
authors.forename: Jasmine P
authors.initials: JP
authors.lastname: Vennila
authors.forename: G
authors.initials: G
authors.lastname: Chakkaravarthi
authors.forename: V
authors.initials: V
authors.lastname: Manivannan