Schulich Faculty of Chemistry, Technion-Israel Institute of Technology, Haifa, 32000, Israel.
Department of Chemical Research Support, Weizmann Institute of Science, Rehovot, 76100, Israel.
Chemistry. 2020 Aug 3;26(43):9481-9485. doi: 10.1002/chem.202002682. Epub 2020 Jul 9.
Palladium complexes of corrole and sapphyrin were prepared in high yield and fully characterized. The corrole provides a tetradentate/trianionic square planar coordination sphere for Pd , charge balanced by pyridinium. Both one and two Pd ions may be accommodated by the pentapyrrolic skeleton of the sapphyrin, and in each case the macrocycle acts as bidentate/monoanionic ligand and the inner-sphere square planar geometry is completed by allyl anions coordinated in an η fashion. NMR spectroscopy and X-ray crystallography data analyses uncovered the presence of interesting stereoisomers due to the flexibility of the ally ligands and also the pyrrole ring(s) that is/are not involved in metal binding.
