title: Methyl 4-(4-chloro-phen-yl)-8-iodo-2-methyl-6-oxo-1,6-dihydro-4H-pyrimido[2,1-b]quinazoline-3-carboxyl-ate.
abstract: In the title compound, C20H15ClIN3O3, the dihedral angle between the quinazolinone ring system [r.m.s. deviation = 0.047 (2) Å] and the pendant benzene ring is 82.63 (11)°. The mol-ecular conformation is stabilized by intra-molecular C-H⋯O inter-actions. In the crystal, the mol-ecules are linked by N-H⋯O hydrogen bonds into chains along the a-axis direction. Another set of chains propagating along [101] is formed due to inter-molecular I⋯Cl short contacts of 3.427 (1) Å, thus giving layers parallel to (010). The layers are connected by C-H⋯π and π-π inter-actions, the shortest distance between the centroids of aromatic rings being 3.8143 (16) Å.
authors.affiliation: Center for Nano Science and Technology@Polimi, Istituto Italiano di Tecnologia, Via Pascoli 70/3-20133 Milan, Italy.
authors.forename: Susanta K
authors.initials: SK
authors.lastname: Nayak
authors.forename: K N
authors.initials: KN
authors.lastname: Venugopala
authors.forename: Bharti
authors.initials: B
authors.lastname: Odhav