title: 2,3-Diethoxy-9,10-anthraquinone.
abstract: Anthraquinone derivatives form an important class of dyes and are also known for their medicinal properties. Recently, 2,3-disubstituted anthraquinones have been shown unexpectedly to jellify various organic solvents. No information on the packing mode of these derivatives was known. Here, the first X-ray structure of a 2,3-disubstituted anthraquinone is reported, namely 2,3-diethoxy-9,10-anthraquinone, C(18)H(16)O(4). The merit of this study lies in the observation of significant differences between the packing in 9,10-anthraquinone, which displays a herring-bone arrangement, and that in the title 2,3-diethoxy derivative, in which the molecules lie on parallel crystallographic morror planes separated by a distance of 3.4081 (1) A, reminiscent of the graphite layer architecture.
authors.affiliation: Laboratoire de Chimie Physique (PCMB EA 4246), Faculté de Pharmacie, Université de Tours, 31 avenue Monge, 37200 Tours, France. hassan.allouchi@univ-tours.fr
authors.forename: Hassan
authors.initials: H
authors.lastname: Allouchi
authors.forename: Georges
authors.initials: G
authors.lastname: Bravic
authors.forename: Nacer
authors.initials: N
authors.lastname: Lahrahar
authors.forename: Jean Pierre
authors.initials: JP
authors.lastname: Desvergne
authors.forename: Henri
authors.initials: H
authors.lastname: Bouas-Laurent
mesh_terms: D000880:Anthraquinones / Q000138:chemical synthesis* / Q000737:chemistry*; D004396:Coloring Agents / Q000737:chemistry; D003460:Crystallization; D018360:Crystallography, X-Ray; D005782:Gels / Q000138:chemical synthesis / Q000737:chemistry; D015394:Molecular Structure; D012997:Solvents / Q000737:chemistry
chemical_list: D000880:Anthraquinones; D004396:Coloring Agents; D005782:Gels; D012997:Solvents; C042834:9,10-anthraquinone