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Issue 52, 2019
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Redox active [Pd2L4]4+ cages constructed from rotationally flexible 1,1′-disubstituted ferrocene ligands

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Abstract

Two new ferrocene-containing [Pd2(LFc)4]4+(X)4 (where X = BF4 or SbF6) self-assembled cages (C·BF4 and C·SbF6) were synthesised from the known, rotationally flexible, 1,1′-bis(3-pyridylethynyl)ferrocene ligand (LFc), and characterised by 1H, 13C and diffusion ordered (DOSY) NMR and UV-visible absorption spectroscopies, high resolution electrospray ionisation mass spectrometry (HR-ESI-MS), elemental analysis, X-ray crystallography and cyclic voltammetry (CV). The molecular structures confirmed that cage-like systems (C·BF4 and C·SbF6) were generated. Similar to related [Pd2L4]4+(X)4, C·SbF6 was able to interact with a range of neutral and anionic guests, with p-toluenesulfonate showing the strongest association constant. Cyclic voltammetry studies revealed that the cage systems were redox active. However, the redox potential of the cage was unperturbed upon the addition of guests.

Graphical abstract: Redox active [Pd2L4]4+ cages constructed from rotationally flexible 1,1′-disubstituted ferrocene ligands

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Supplementary files

Article information


Submitted
30 Apr 2019
Accepted
31 May 2019
First published
31 May 2019

Chem. Commun., 2019,55, 7506-7509
Article type
Communication

Redox active [Pd2L4]4+ cages constructed from rotationally flexible 1,1′-disubstituted ferrocene ligands

R. A. S. Vasdev, J. A. Findlay, A. L. Garden and J. D. Crowley, Chem. Commun., 2019, 55, 7506
DOI: 10.1039/C9CC03321A

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