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Concentration dependent supramolecular interconversions of triptycene-based cubic, prismatic, and tetrahedral structures

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Abstract

The quantitative, single step, self-assembly of a shape-persistent, three-dimensional C3v-symmetric, triptycene-based tris-terpyridinyl ligand initially gives a platonic-based cubic architecture, which was unequivocally characterized by 1D and 2D NMR spectroscopy, mass spectrometry, and single crystal X-ray structural analysis. The unique metal–ligand binding properties of the Cd2+ analogue of this construct give rise to a concentration-dependent dynamic equilibrium between cube, prism, and tetrahedron-shaped architectures. Dilution transforms this cube into two identical tetrahedra through a stable prism-shaped intermediate; increasing the concentration reverses the process.

Graphical abstract: Concentration dependent supramolecular interconversions of triptycene-based cubic, prismatic, and tetrahedral structures

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Publication details

The article was received on 05 Dec 2017, accepted on 12 Jan 2018 and first published on 12 Jan 2018


Article type: Paper
DOI: 10.1039/C7DT04571A
Citation: Dalton Trans., 2018, Advance Article
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    Concentration dependent supramolecular interconversions of triptycene-based cubic, prismatic, and tetrahedral structures

    S. Chakraborty, K. J. Endres, R. Bera, L. Wojtas, C. N. Moorefield, M. J. Saunders, N. Das, C. Wesdemiotis and G. R. Newkome, Dalton Trans., 2018, Advance Article , DOI: 10.1039/C7DT04571A

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