An Introduction to the Mechanical Bond

Bruns, Carson J.

doi:10.1002/9781119044123.ch1

The Nature of the Mechanical Bond 2016

DOI: 10.1002/9781119044123.ch1

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An Introduction to the Mechanical Bond

Carson J. Bruns¹

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Cited by 5 publications

References 505 publications

(375 reference statements)

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Mechanically Interlocked Chiral Self‐Templated [2]Catenanes from 2,6‐Bis(1,2,3‐triazol‐4‐yl)pyridine (btp) Ligands

McCarney

Lovitt

Gunnlaugsson

2021

Chemistry A European J

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We report the efficient self‐templated formation of optically active 2,6‐bis(1,2,3‐triazol‐4‐yl)pyridine (btp) derived homocircuit [2]catenane enantiomers. This represents the first example of the enantiopure formation of chiral btp homocircuit [2]catenanes from starting materials consisting of a classical chiral element; X‐ray diffraction crystallography enabled the structural characterization of the [2]catenane. The self‐assembly reaction was monitored closely in solution facilitating the characterization of the pseudo‐rotaxane reaction intermediate prior to mechanically interlocking the pre‐organised system via ring‐closing metathesis.

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Mechanically Interlocked Chiral Self‐Templated [2]Catenanes from 2,6‐Bis(1,2,3‐triazol‐4‐yl)pyridine (btp) Ligands

McCarney

Lovitt

Gunnlaugsson

2021

Chemistry A European J

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Synthesis of ‘Impossible’ Rotaxanes

Saura‐Sanmartin

2024

Chemistry A European J

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'Impossible' rotaxanes, which are constituted by interlocked components without obvious binding motifs, have attracted the interest of the mechanically interlocked molecules (MIMs) community. Within the synthetic efforts reported in the last decades towards the preparation of MIMs, some innovative protocols for accessing 'impossible' rotaxanes have been developed. This short review highlights different selected synthetic examples of 'impossible' rotaxanes, as well as suggests some future directions of this research area.

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Crystallization Mechanisms Applied to Understand the Crystal Formation of Rotaxanes

et al. 2019

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The present study discusses the crystalline packing formation of several [2]rotaxanes with Leigh‐type tetralactam macrocycle bearing different threads. The presence of solvent molecules in some structures are also addressed to shed some light on this matter. Additionally, the degree of similarity between supramolecular structures of rotaxanes was discussed using similarity indices. For this, new descriptors and crystallization mechanisms, which were proposed in terms of contact area and stabilization energy, were carried out to evaluate the rotaxane molecules. It was possible to observe similar general stages of crystallization dominated by the formation of 1D‐blocks and, in fewer cases, by dimers in the first stage of nucleation. The preference for the formation of 1D nuclei resides in the large contact area and complementarity involved in the large set of interactions between the rotaxanes at the earliest stages of crystallization. In this context, it was possible to propose when solvent molecules are trapped between the rotaxanes during crystal formation. Therefore, a unique example of a rotaxane whose topology favored the entrapment of water molecules between rotaxanes during the first stage of the crystallization process is presented. Crystallization mechanisms showed to be a valuable asset in the supramolecular investigation of rotaxanes in the crystalline state.

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An Introduction to the Mechanical Bond

Cited by 5 publications

References 505 publications

Mechanically Interlocked Chiral Self‐Templated [2]Catenanes from 2,6‐Bis(1,2,3‐triazol‐4‐yl)pyridine (btp) Ligands

Mechanically Interlocked Chiral Self‐Templated [2]Catenanes from 2,6‐Bis(1,2,3‐triazol‐4‐yl)pyridine (btp) Ligands

Synthesis of ‘Impossible’ Rotaxanes

Crystallization Mechanisms Applied to Understand the Crystal Formation of Rotaxanes

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