Helical Bis(N‐Confused Porphyrins) with Subunits Fused by Double Orthometalation with Platinum: Adaptability of an Apparently Rigid System

Flexible yet rigid: The flexibility of the porphyrin rings makes racemization or chiral induction still possible with helical metalated bis(N-confused porphyrin) systems, even though the bipyrrole fragment itself is rigid. The porphyrins are peripherally doubly orthometalated with platinum(II), and a series of its oxidative addition products were also obtained (see structures of the iodomethyl adduct: gray and brown C; blue N; orange Pt; purple I).