نتایج جستجو برای: corannulene
تعداد نتایج: 137 فیلتر نتایج به سال:
Density functional techniques including gradient corrections are used to investigate the relative energies of the ring, bowl (corannulene-like), and cage ( fullerene-like) isomers of Cl,,. In agreement with previous studies, the local density approximation yields the cage to be the most stable isomer with the bowl and ring forms being significantly higher in energy. However, the inclusion of gr...
Department of Chemistry, University at Alba NY 12222, USA. E-mail: mpetrukhina@alba Department of Chemistry, University of Pen Department of Chemistry, Illinois Institute E-mail: [email protected] CNRS, Centre de Recherche Paul Pascal (C Université de Bordeaux, Pessac, F-33600, F † Electronic supplementary information characterization, X-ray diffraction study 948063. For ESI and crystallographic...
Five-fold-symmetric pentabromo- and pentaiodo-corannulenes were synthesized in sub-gram scale high yields under aerial conditions purified without any chromatographic separations. The obtained pentahalocorannulenes fully characterized by NMR, MS, X-ray crystallography. are useful precursors of five-fold symmetric heteroatom-substituted corannulenes that difficult-to-address from known corannule...
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