The chemistry of corroles, somewhat lesser known cousins of porphyrins, has grown by leaps and bounds over the last few years. In structural studies of metallocorroles (Acc. Chem. Res. 2012  , 45, 1203�1214), we have uncovered remarkable nonplanar distortions for copper corroles (the 'tacos'), whereas the corresponding gold analogues are planar (the 'pancakes'). The nonplanar, saddled conformations are believed to reflect noninnocent character of the copper complexes .  Very recently, we have successfully demetallated copper corroles to synthesize sterically hindered, free-base corroles and isocorroles for the first time. In this talk, we will present a series of crystal structures of corrole derivatives, focusing on remarkable nonplanar distortions, against the backdrop of a broad preference for planar structures.

From metallocorroles to reductive demetallation: An X-ray structural journey

245th National Meeting (2013)

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