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Issue 20, 2013
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Toward molecular rotors: tetra-N-heterocyclic carbene Ag(I)-halide cubane-type clusters

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1,3-Bis(3′-butylimidazol-1′-yl)benzene diiodide (2a), 1,3-bis(3′-but-3′′-enyl-imidazolium-3′-yl)benzene diiodide (2b), 1,3-bis(3′-pent-4′′-enyl-imidazolium-3′-yl)benzene diiodide (2c), 1,3-bis(4′-butyl-1′,2′,4′-triazolium-1′-yl)benzene diiodide (2d), or 1,3-bis(4′-butyl-1′,2′,4′-triazolium-1′-yl)benzene dibromide (2e) was reacted with Ag2O yielding unprecedented tetra-N-heterocyclic carbene-Ag(I)-X cubane-type clusters. These were characterized by 1H and 13C NMR spectroscopy, ESI-TOF MS, elemental analysis, and X-ray crystallography. Results from VT 13C NMR spectroscopy and cross-over experiments are consistent with intramolecular exchange suggesting that the Ag(I) complexes are molecular rotors.

Graphical abstract: Toward molecular rotors: tetra-N-heterocyclic carbene Ag(i)-halide cubane-type clusters

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Publication details

The article was received on 29 Nov 2012, accepted on 25 Jan 2013 and first published on 07 Feb 2013

Article type: Paper
DOI: 10.1039/C3DT32862G
Citation: Dalton Trans., 2013,42, 7338-7344
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    Toward molecular rotors: tetra-N-heterocyclic carbene Ag(I)-halide cubane-type clusters

    W. D. Clark, G. E. Tyson, T. K. Hollis, H. U. Valle, E. J. Valente, A. G. Oliver and M. P. Dukes, Dalton Trans., 2013, 42, 7338
    DOI: 10.1039/C3DT32862G

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