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Cercosporin-Photocatalyzed [4+1]- and [4+2]-Annulations of Azoalkenes Under Mild Conditions
Published on: July 17, 2020
Enantiopure cycloplatinated pentahelicenic N-heterocyclic carbenic complexes that display long-lived circularly
Debsouri Kundu1, Natalia Del Rio1, Marie Cordier1
1Université de Rennes, CNRS, ISCR - UMR 6226, 35000 Rennes, France. jeanne.crassous@univ-rennes1.fr.
Abstract:
The preparation of the first enantiopure cycloplatinated complexes bearing a bidentate, helicenic N-heterocyclic carbene and a diketonate ancillary ligand is presented, along with their structural and spectroscopic characterization based on both experimental and computational studies. The systems exhibit long-lived circularly polarized phosphorescence in solution and in doped films at room temperature, and also in a frozen glass at 77 K, with dissymmetry factor glum values ≥10-3 in the former and around 10-2 in the latter.
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