1,3,5-三苯基全氢-1,3,5-三嗪-2,4,6-三酮在120 K时的正交晶系和单斜晶系多晶型物：由C-H...π(芳烃)氢键形成的链和片层
Orthorhombic and monoclinic polymorphs of 1,3,5-triphenylperhydro-1,3,5-triazine-2,4,6-trione at 120 K: chains and sheets formed by C-H...pi(arene) hydrogen bonds.
作者信息
Mariyatra M Baby, Panchanatheswaran Krishnaswamy, Low John N, Glidewell Christopher
机构信息
Department of Chemistry, Bharathidasan University, Tiruchirappalli, Tamil Nadu 620 024, India.
出版信息
Acta Crystallogr C. 2004 Sep;60(Pt 9):o682-5. doi: 10.1107/S0108270104017342. Epub 2004 Aug 21.
The title compound, C21H15N3O3, crystallizes in two polymorphic forms. In the orthorhombic polymorph, (I), in space group Fdd2 with Z' = 1, the molecules lie in general positions, while in the monoclinic polymorph, (II), in space group C2/c with Z' = 1/2, the molecules lie across twofold rotation axes. In each polymorph, the molecules are linked by a single C-H.pi(arene) hydrogen bond, forming chains in polymorph (I) and sheets in (II).
标题化合物C21H15N3O3以两种多晶型形式结晶。在正交晶系多晶型物（I）中，空间群为Fdd2，Z' = 1，分子处于一般位置；而在单斜晶系多晶型物（II）中，空间群为C2/c，Z' = 1/2，分子位于二重旋转轴上。在每种多晶型物中，分子通过单个C-H.π（芳烃）氢键相连，在多晶型物（I）中形成链状结构，在（II）中形成层状结构。
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