title: 2,7-Dimethoxynaphthalene.
abstract: C12H12O2, Mr = 188.2, orthorhombic, P2(1)2(1)2(1), a = 6.109 (3), b = 8.235 (2), c = 19.713 (3) A, V = 991.8 (9) A3, Z = 4, Dx = 1.260 g cm-3, lambda(Mo K alpha) = 0.71073 A, mu = 0.79 cm-1, F(000) = 400, T = 293 K, R = 0.047 for 737 observations (of 1337 unique data). The average deviation from planarity is 0.013 (3) A with a maximum of 0.027 (3) A for the fused rings. Steric interaction between the methyl groups and the adjacent H atoms is responsible for opening the angles between the methoxyl groups and the rings. The CH3O-C-C angles are 125.5 (3) degrees [125.0 (3) degrees] where the methyl group is syn to the hydrogen, and 114.3 (3) degrees [114.2 (3) degrees] where it is anti.
authors.affiliation: Department of Chemistry, Louisiana State University, Baton Rouge 70803-1804.
authors.forename: P
authors.initials: P
authors.lastname: Prince
authors.forename: F R
authors.initials: FR
authors.lastname: Fronczek
authors.forename: R D
authors.initials: RD
authors.lastname: Gandour
mesh_terms: D003460:Crystallization; D003461:Crystallography; D015394:Molecular Structure; D009281:Naphthalenes
chemical_list: D009281:Naphthalenes; C062171:2,7-dimethoxynaphthalene