title: 1-Acetyl-4-phenyl-5a,6,7,8,9,9a-hexa-hydro-5H-1,5-benzodiazepin-2(1H)-one.
abstract: The seven-membered ring of the title compound, C(17)H(20)N(2)O(2), adopts an approximate boat conformation while the cyclo-hexyl ring adopts a chair conformation. In the crystal, adjacent mol-ecules are linked by N-H⋯O hydrogen bonds into a zigzag chain running along the c axis of the monoclinic unit cell.
authors.forename: Hanane
authors.initials: H
authors.lastname: Benzeid
authors.forename: Nathalie
authors.initials: N
authors.lastname: Saffon
authors.forename: Bernard
authors.initials: B
authors.lastname: Garrigues
authors.forename: El Mokhtar
authors.initials: el M
authors.lastname: Essassi
authors.forename: Seik Weng
authors.initials: SW
authors.lastname: Ng