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Stimuli-Responsive Interconversion between Poly-NHC-Based Organometallic Assemblies and Their Self-Aggregated Dimers
  • Guang-Feng Jin,
  • Ying-Feng Han
Guang-Feng Jin
Northwest University
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Ying-Feng Han
Northwest University

Corresponding Author:yfhan@nwu.edu.cn

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Abstract

Poly-NHC-based organometallic assemblies 3-PF6, 3-SbF6 and 3-OTf were obtained and verified by NMR spectroscopy, ESI mass spec-trometry and single-crystal X-ray diffraction analyses. Controllable structural interconversion was observed between the poly-NHC-based organometallic assemblies and their self-aggregated dimers in solution affected by concentration, solvent and metal ion. 1H NMR spectra of assembly 3-PF6 in CD3CN at different concentrations demonstrated controllable structural interconversion, and 19F NMR spectrum of assembly 3-PF6 at high concentration further evidenced the presence of the free hexafluorophosphate anion and en-capsulated hexafluorophosphate anion for its two sets of signals. In addition, single-crystal X-ray diffraction analysis provided clear evi-dence that in the solid state, two assemblies 3-PF6 were vertically stuck, forming a self-aggregated dimer with an encapsulated hex-afluorophosphate anion. Investigating the reversible structural interconversion is beneficial for revealing the intrinsic nature on the atom level and paving the way to design the stimuli-responsive functional system.
Submitted to Chinese Journal of Chemistry
11 May 2024Assigned to Editor
11 May 2024Review(s) Completed, Editorial Evaluation Pending
11 May 2024Submission Checks Completed
20 Jun 2024Editorial Decision: Revise Minor
24 Jun 20241st Revision Received
24 Jun 2024Review(s) Completed, Editorial Evaluation Pending
26 Jun 2024Editorial Decision: Accept