Allouchi Hassan, Bravic Georges, Lahrahar Nacer, Desvergne Jean Pierre, Bouas-Laurent Henri
Laboratoire de Chimie Physique (PCMB EA 4246), Faculté de Pharmacie, Université de Tours, 31 avenue Monge, 37200 Tours, France.
Acta Crystallogr C. 2008 Nov;64(Pt 11):o620-2. doi: 10.1107/S0108270108034227. Epub 2008 Oct 31.
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.
蒽醌衍生物是一类重要的染料，同时也因其药用特性而闻名。最近，人们意外地发现2,3 - 二取代蒽醌能使各种有机溶剂胶凝。此前对于这些衍生物的堆积方式尚无相关信息。在此，报道了首个2,3 - 二取代蒽醌的X射线结构，即2,3 - 二乙氧基 - 9,10 - 蒽醌，化学式为C(18)H(16)O(4)。本研究的价值在于观察到9,10 - 蒽醌呈现出鱼骨状排列，而标题中的2,3 - 二乙氧基衍生物的堆积方式与之存在显著差异，在该衍生物中，分子位于平行的晶体学镜面平面上，间距为3.4081 (1) Å，这让人联想到石墨层结构。
