Twin Triptycyl Spinning Tops: A Simple Case of Molecular Gearing with DynamicC2 Symmetry
作者:Kirill Nikitin、Helge Müller-Bunz、Yannick Ortin、Wilhelm Risse、Michael J. McGlinchey
DOI:10.1002/ejoc.200800202
日期:2008.6
Lithiation and subsequent oxidation of the recently described prototype molecular paddlewheel 9-(2-indenyl)triptycene (1) leads to the racemic dimer 2,2′-bis(9-triptycyl)-1,1′-biindenyl (4). In the solid state this very congested molecule adopts a conformation in which the two triptycenyl paddlewheel fragments are attached to the C2-symmetric biindenyl core. However, the orientation of the triptycene