Low-temperature triphenylmethane
Low-temperature triphenylmethane
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低温三苯甲烷
DOI：
10.1107/s0108270195011164
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发表时间：
1996
期刊：
影响因子：
--
通讯作者：
L. Jenneskens
中科院分区：
文献类型：
--
作者：
N. Veldman;A. Spek;J. J. Schlotter;J. W. Zwikker;L. Jenneskens
三苯甲烷的晶体结构C19H16在150K被重新测定，这证实了先前报道的室温研究[Riche&PasCard-billy(1974)]。Acta Cryst.B30,1874-1876]，同时将错误报告的空间群从P2 1 2 1 2 1更正为PNa2 1。该结构包含两个结晶学上独立的三苯基甲烷分子，均为螺旋桨结构。理想苯环几何构型的变形与具有电子释放取代基的环的预期变形一致。
The crystal structure of triphenylmethane, C 19 H 16 , has been redetermined at 150 K. It confirms the previously reported room-temperature study [Riche & Pascard-Billy (1974). Acta Cryst. B30, 1874-1876], while correcting for the erroneously reported space group from P2 1 2 1 2 1 to Pna2 1 . The structure contains two crystallographically independent triphenylmethane molecules, both with a propeller configuration. The deformations from ideal phenyl-ring geometry conform with those expected for rings having electron-releasing substituents.