Polyyne [3]Rotaxanes: Synthesis via Dicobalt Carbonyl Complexes and Enhanced Stability

Autor: Connor W. Patrick, Joseph F. Woods, Przemyslaw Gawel, Claire E. Otteson, Amber L. Thompson, Tim D. W. Claridge, Ramesh Jasti, Harry L. Anderson
Rok vydání: 2022
Předmět:
Zdroj: Angewandte Chemie. 134
ISSN: 1521-3757
0044-8249
DOI: 10.1002/ange.202116897
Popis: New strategies for synthesizing polyyne polyrotaxanes are being developed as an approach to stable carbyne “insulated molecular wires”. Here we report an active metal template route to polyyne [3]rotaxanes, using dicobalt carbonyl masked alkyne equivalents. We synthesized two [3]rotaxanes, both with the same C28 polyyne dumbbell component, one with a phenanthroline-based macrocycle and one using a 2,6-pyridyl cycloparaphenylene nanohoop. The thermal stabilities of the two rotaxanes were compared with that of the naked polyyne dumbbell in decalin at 80 °C, and the nanohoop rotaxane was found to be 4.5 times more stable.
Databáze: OpenAIRE
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