Conformational Isomers from Rotation of Diacetylenic Bond in an Ethynylpyrene-Substituted Molecular Hinge
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The first example of isolation and X-ray crystallographic structural characterization of two conformers arising from rotation along a diacetylenic bond is reported. In both the conformers extensive π−π interactions are observed in the solid state. VT-NMR and fluorescence spectroscopic studies in solution suggest that the closed and open conformers are in equilibrium and that the closed conformer is the predominant species at room temperature.
创建时间：
2016-06-03
