Strong and Tunable Near‐Infrared Circular Dichroism in Helical Tetrapyrrole Complexes

The selective synthesis of nickel and copper complexes of 19‐benzoyl‐5,10,15‐triphenyl‐bilatrien‐1‐one (H2TPBT) is reported, a molecule which crystallizes as a molecular helix of one‐and‐a‐quarter which turns with a 5.7 Å radius and a 3.2 Å pitch, and all 26 participating atoms are sp2‐hybridized. U...

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