Sarwa A, Białońska A, Sobieraj M, Martínez JP, Trzaskowski B, Szyszko B. Iminopyrrole-Based Self-Assembly: A Route to Intrinsically Flexible Molecular Links and Knots.
Angew Chem Int Ed Engl 2024;
63:e202316489. [PMID:
38032333 DOI:
10.1002/anie.202316489]
[Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2023] [Revised: 11/29/2023] [Accepted: 11/30/2023] [Indexed: 12/01/2023]
Abstract
The use of 2,5-diformylpyrrole in self-assembly reactions with diamines and Zn(II)/Cd(II) salts allowed the preparation of [2]catenane, trefoil knot, and Borromean rings. The intrinsically dynamic nature of the diiminopyrrole motif rendered all of the formed assemblies intramolecularly flexible. The presence of diiminopyrrole revealed new coordination motifs and influenced the host-guest chemistry of the systems, as illustrated by hexafluorophosphate encapsulation by Borromean rings.
Collapse