Bis(sulfoximine) yttrium complexes as catalysts for enantioselective intramolecular hydroaminations were prepared for the first time and characterized by a multinuclear NMR study including the nuclei H, C, N and Y. The stoichiometries of the complexes were confirmed by a Job plot. In addition to the experimental results, the Y NMR shifts and the complex structures were elucidated by DFT calculations.
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