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首页> 外文期刊>Journal of chemical crystallography >9-(2-Methylphenyl)-3, 4, 5, 6, 9, 10-hexahydroxanthene-1, 8(2H, 7H)-dione
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9-(2-Methylphenyl)-3, 4, 5, 6, 9, 10-hexahydroxanthene-1, 8(2H, 7H)-dione

机译:9-(2-甲基苯基)-3,4,5,6,9,10-六氢10吨-1,8(2H,7H)-二酮

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摘要

Several 9-(2-R phenyl)xanthenediones have been synthesized and the x-ray diffraction structure for the 2-methylphenyl derivative (4b) has been determined. This compound crystallizes in the monoclinic system, space group P2_1, with a = 11.729 (3), b = 9.674 (3), c = 14.628 (4) A, and #beta# = 106.30 deg. It presents a partially hydrogenated xanthene system in distorted boat conformation for the heterocyclic central ring, and an almost ideal envelope conformation for the outer rings. The aromatic substituent at the ninth position is at 84 deg in angle with the xanthene system.
机译:已经合成了几种9-(2-R苯基)氧杂二酮,并且已经确定了2-甲基苯基衍生物(4b)的X射线衍射结构。该化合物在单斜晶系空间群P2_1 / n中结晶,a = 11.729(3),b = 9.674(3),c = 14.628(4)A,#beta#= 106.30度。它为杂环中心环提供了扭曲的舟构型的部分氢化x吨体系,以及对于外环的几乎理想的包络构型。第九位的芳族取代基与the吨体系成84度角。

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