title: 8H-Chromeno[2',3':4,5]imidazo[2,1-a]isoquinoline.
abstract: The title compound, C(18)H(12)N(2)O, comprises two aromatic fragments, viz., imidazo[2,1-a]isoquinoline and benzene, linked by oxygen and methyl-ene bridges. Despite the absence of a common conjugative system within the mol-ecule, it adopts an essentially planar conformation with an r.m.s. deviation of 0. 036 Å. In the crystal, due to this structure, mol-ecules form stacks along the b axis by π⋯π stacking inter-actions, with shortest C⋯C distances in the range 3.340 (4)-3.510 (4) Å. The mol-ecules are bound by inter-molecular C-H⋯O inter-actions within the stacks and C-H⋯π inter-actions between the stacks.
authors.forename: Saifidin
authors.initials: S
authors.lastname: Safarov
authors.forename: Leonid G
authors.initials: LG
authors.lastname: Voskressensky
authors.forename: Oksana V
authors.initials: OV
authors.lastname: Bizhko
authors.forename: Larisa N
authors.initials: LN
authors.lastname: Kulikova
authors.forename: Victor N
authors.initials: VN
authors.lastname: Khrustalev