Angewandte Chemie International Edition· 2026Q1
Metal‐Templated Dynamic Reorganization of Macrocyclic Gold Complexes Toward an N ‐Doped Cycloparaphenylene Catenane
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- Q1SCImago
- 2026year
Short summary
Researchers created a mechanically interlocked [2]catenane of two nitrogen-doped cycloparaphenylenes ([12]CPPs) using coupled dynamic Au-C and Cu-N bonds, enabling simultaneous topological assembly and backbone reorganization.
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Key points
- A [2]catenane composed of two mechanically interlocked, nitrogen-doped [12]cycloparaphenylenes ([12]CPPs) was synthesized.
- The synthesis utilized a metal-templated dynamic reorganization strategy coupling orthogonal Au(I)−C σ-bond exchange and Cu(I)−N coordination.
- This approach enables simultaneous formation of the interlocked topology and reorganization of rigid backbones.
- Computational analyses suggest Cu(I)-templated intermediates in the formation process.
- The nitrogen atoms in the nanohoops allow for guest-dependent biasing of mechanical helical chirality.
AI-generated from the title and abstract; the full text is not read.
Abstract
ABSTRACT Self‐assembly based on a single dynamic bond smoothly converges on its thermodynamic product, but this does not extend to an interlocked architecture composed of strained, fully π ‐conjugated rings such as [ n ]cycloparaphenylenes ([ n ]CPPs), because assembling such an architecture requires forming the interlocked topology and reorganizing the rigid backbone at the same time. Herein, we report that two dynamic processes designed to operate orthogonally, reversible Au(I)─C σ ‐bond exchange and exchangeable Cu(I)─N coordination, can be coupled to promote metal‐templated dynamic reorganization. This process leads to the formation of an interlocked metal‐complex precursor, which reductive elimination then converts into a [2]catenane composed of two mechanically interlocked, fully π‐conjugated, nitrogen‐doped [12]CPP‐based nanohoops. Computational analyses provide insight into possible Cu(I)‐templated intermediates involved in the formation of the interlocked structure. The embedded sp 2 nitrogen atoms further provide coordination sites for guest‐dependent biasing of the co‐conformational mechanical helical chirality. This work establishes dynamic metal‐templated reorganization as a strategy for constructing strained, topologically complex π‐conjugated architectures beyond the reach of conventional single‐interaction self‐assembly.
The authors' abstract, as published at the source. Angewandte Chemie International Edition, 2026 · DOI ↗
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Field: Organic Chemistry
Organic ChemistryChemistry