Dibenzo[cde,opq]rubicene has been synthesized by an eight-step reaction sequence including an iron-mediated [2+2+1] cycloaddition and a flash vacuum pyrolysis as key steps. Two crystal modifications of the S-shaped, planar polycyclic aromatic hydrocarbon have been obtained and characterized by X-ray diffractometry.
Keywords: X-ray diffraction; cycloadditions; flash vacuum pyrolysis; polycyclic aromatic hydrocarbons; polymorphism.
© 2019 The Authors. Published by Wiley-VCH Verlag GmbH & Co. KGaA.