Journal
EUROPEAN JOURNAL OF INORGANIC CHEMISTRY
Volume -, Issue 12, Pages 1865-1870Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/ejic.201100170
Keywords
Aromaticity; Chirality; Corroles; Trifluoromethylated compounds
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Funding
- Research Council of Norway
- National Research Fund of South Africa
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In contrast to sterically hindered metalloporphyrins, which are almost always strongly nonplanar, similarly substituted metallocorroles are generally relatively planar. A crystal structure of a copper beta-octakis(trifluoromethyl)-meso-triarylcorrole, however, has revealed a corrole macrocycle with an unprecedented degree of saddling. With the exception of the bipyrrole unit, any two adjacent pyrrole rings are essentially orthogonal to each other. Furthermore, the C-2-symmetric molecular structure is chiral and NMR spectroscopy and DFT calculations suggest that the enantiomers do not interconvert readily. Once resolved, the molecule may provide us with a novel example of an inherently chiral chromophore.
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