title: Crystal structure of 10-[(3-oxo-3H-benzo[f]chromen-1-yl)meth-yl]-2-tri-fluoro-methyl-9a,10-di-hydro-benz[4,5]imidazo[1,2-a]pyrimidin-4(5aH)-one.
abstract: In the title compound, C25H14F3N3O3, the dihedral angle between the planes of the benz[4,5]imidazo[1,2-a]pyrimidine unit (r.m.s. deviation = 0.035 Å) and the benzochromene ring system (r.m.s. deviation = 0.106 Å) is 72.82 (5)°. In the crystal, mol-ecules are linked by C-H⋯O inter-actions, generating [010] C(9) chains. A weak aromatic π-π stacking inter-action [centroid-centroid separation = 3.5376 (15) Å] is also observed.
authors.affiliation: Department of Studies in Physics, Manasagangotri, University of Mysore, Mysore 570 006, India.
authors.lastname: Chandra
authors.affiliation: Department of Physics, SJB Institute of Technology, Kengeri, Bangalore 560 060, India.
authors.forename: Shamantha
authors.initials: S
authors.lastname: Kumar
authors.affiliation: Department of Chemistry, Central College Campus, Bangalore University, Bangalore 560 001, India.
authors.forename: K B
authors.initials: KB
authors.lastname: Puttaraju
authors.affiliation: Department of Chemistry, Central College Campus, Bangalore University, Bangalore 560 001, India.
authors.forename: K
authors.initials: K
authors.lastname: Shivashankar
authors.affiliation: Department of Studies in Physics, Manasagangotri, University of Mysore, Mysore 570 006, India.
authors.forename: M
authors.initials: M
authors.lastname: Mahendra
keywords: benzimidazole; benzo­pyrimidine; chromene; crystal structure; fused-ring system; pyrimidinone; π–π stacking inter­actions