Issue 4, 2021

Supramolecular architectures sustained by delocalised C–I⋯π(arene) interactions in molecular crystals and the propensity of their formation

Abstract

A systematic analysis of the Cambridge Crystallographic Database has been made for supramolecular architectures sustained by C–I⋯π(chelate ring) interactions where the iodide atom is directed towards the ring centroid, Cg, of the arene ring, i.e. with the angle subtended at the iodide atom, C–I⋯Cg (θ) being ≥160°. The majority of the 181 identified aggregates are one-dimensional chains of varying topology (100 examples) followed by zero-dimensional aggregates (71 examples) with only a small number of two-dimensional arrays (4 examples). The overall likelihood for the formation of these delocalised interactions is around 4%, a number that increases to around 15% when the angle θ restriction is relaxed to 90°. A comparison has been made with the formation of C–X⋯π(chelate ring) interactions for the lower X = bromide, chloride and fluoride congeners. This shows these interactions are more likely to form in the order X = I > Br > Cl ≫ F.

Graphical abstract: Supramolecular architectures sustained by delocalised C–I⋯π(arene) interactions in molecular crystals and the propensity of their formation

Supplementary files

Article information

Article type
Paper
Submitted
18 नवम्बर 2020
Accepted
11 दिसम्बर 2020
First published
11 दिसम्बर 2020

CrystEngComm, 2021,23, 904-928

Supramolecular architectures sustained by delocalised C–I⋯π(arene) interactions in molecular crystals and the propensity of their formation

E. R. T. Tiekink, CrystEngComm, 2021, 23, 904 DOI: 10.1039/D0CE01677B

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements