A supramolecular helicate with two independent Fe(ii) switchable centres and a [Fe(anilate)₃]³⁻ guest

Abstract

A biphenyl-spaced bis-pyrazolylpyridine ligand interacts with ferrous ions to engender a dimetallic helical coordination cage that encapsulates an Fe3+ tris-anilate complex. The host-guest interaction breaks the symmetry of the Fe2+...

Guest selectivity of [Ni2] supramolecular helicates

“…replacing the central phenylene with biphenylene), the cavity becomes larger, and the host can then sequester bigger guests, such as transition metal complexes of the right symmetry. 30–32…”