title: 2-ethylthio-9-methyl-1,4-dihydroacridine-1,4-dione and 9-methyl-2-(4-tolylthio)-1,4-dihydroacridine-1,4-dione.
abstract: The title compounds, C16H13NO2S, (I), and C21H15NO2S, (II), have similar molecular structures that differ only in the side groups attached to the S atom. The crystal packing is dominated by pi-pi stacking interactions, involving acridinedione-acridinedione overlap in (I) and both acridinedione-acridinedione and acridinedione-tolyl overlap in (II).
authors.affiliation: Chemistry Department, University of Auckland, New Zealand.
authors.forename: L J
authors.initials: LJ
authors.lastname: Baker
authors.forename: G R
authors.initials: GR
authors.lastname: Clark
authors.forename: B R
authors.initials: BR
authors.lastname: Copp
authors.forename: R P
authors.initials: RP
authors.lastname: Hansen
authors.forename: C J
authors.initials: CJ
authors.lastname: Squire
mesh_terms: D000166:Acridines / Q000737:chemistry*; D018360:Crystallography, X-Ray; D008958:Models, Molecular
chemical_list: C119179:2-ethylthio-9-methyl-1,4-dihydroacridine-1,4-dione; C119180:9-methyl-2-(4-tolylthio)-1,4-dihydroacridine-1,4-dione; D000166:Acridines