title: Structure of 6-fluoro-1,2,3,4,7,12-hexahydro-7-methyl-12-methylene- benz[a]anthracene.
abstract: The X-ray analysis confirms the structure of the 12-methylene tautomer formed by the acid catalysis of 6-fluoro-1,2,3,4-tetrahydro-7,12-dimethylbenz[a]anthracene. The central C ring is in a boat conformation, with the result that the molecule is bent about a line through atoms C(7) and C(12) with a dihedral angle of 32.5 degrees. The cyclohexene A ring is in a half-chair conformation.
authors.affiliation: Department of Chemistry, Ohio State University, Columbus 43210.
authors.forename: J C
authors.initials: JC
authors.lastname: Gallucci
authors.forename: P K
authors.initials: PK
authors.lastname: Sharma
authors.forename: S D
authors.initials: SD
authors.lastname: Black
authors.forename: S J
authors.initials: SJ
authors.lastname: Rinderle
authors.forename: D T
authors.initials: DT
authors.lastname: Witiak
mesh_terms: D001551:Benz(a)Anthracenes / Q000737:chemistry*; D018360:Crystallography, X-Ray; D008958:Models, Molecular; D015394:Molecular Structure; D013237:Stereoisomerism
chemical_list: D001551:Benz(a)Anthracenes; C085716:6-fluoro-1,2,3,4,7,12-hexahydro-7-methyl-12-methylenebenz(a)anthracene