Diazadithia[7]helicenes: Synthetic Exploration, Solid-State Structure, and Properties
作者:Deepali Waghray、Arvid Cloet、Kristof Van Hecke、Stijn F. L. Mertens、Steven De Feyter、Luc Van Meervelt、Mark Van der Auweraer、Wim Dehaen
DOI:10.1002/chem.201300843
日期:2013.9.2
amination. Racemization studies confirmed that the enantiopure forms of these [7]helicenes are conformationally stable compared to their lower analogues. The solid‐state structures of the novel diazadithia[7]helicenes were determined by single‐crystal X‐ray diffraction. The crystal structures of these azathia[7]helicenes show columnar stacking in antiparallel fashion. The HOMO–LUMO gaps of the new compounds