title: 10-Ethyl-10H-phenothia-zine-3-carbaldehyde.
abstract: In the title mol-ecule, C(15)H(13)NOS, the two benzene rings of the tricyclic fused-ring system are inclined at 21.1 (1)°. In the crystal, weak C-H⋯O hydrogen bonds link the mol-ecules into chains along [001]. The crystal packing also exhibits π-π inter-actions with a distance of 3.801 (5) Å between the centroids of the benzene rings of neighbouring mol-ecules.
authors.affiliation: Department of Chemistry, Anhui University, Hefei 230039, People's Republic of China, and Key Laboratory of Functional Inorganic Materials, Chemistry, Hefei 230039,  People's Republic of China.
authors.forename: Dao-Hui
authors.initials: DH
authors.lastname: Yu
authors.forename: Jian-Qing
authors.initials: JQ
authors.lastname: Wang
authors.forename: Lin
authors.initials: L
authors.lastname: Kong
authors.forename: Zhao-di
authors.initials: ZD
authors.lastname: Liu