Abstract
AbstractIn contrast to sterically hindered metalloporphyrins, which are almost always strongly nonplanar, similarly substituted metallocorroles are generally relatively planar. A crystal structure of a copper β‐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 C2‐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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