Issue 2, 2015

Combining coordination and supramolecular chemistry to explore uranyl assembly in the solid state

Abstract

The syntheses and crystal structures of twelve new compounds containing the UO22+ cation, a bromo-substituted benzoic acid linker (m-bromo-, p-bromo, or 3,5-dibromobenzoic acid) and a chelating N-donor (1,10-phenanthroline, 2,2′:6′,2′′-terpyridine, or 4′-chloro-2,2′:6′,2′′-terpyridine) are reported. Single crystal X-ray diffraction analyses of these materials allowed for the exploration of the structural relationship between the benzoic acids and the chelating N-donor, as well as the influence of pH on uranyl speciation. At an unadjusted pH (∼3) a mix of uranyl monomers and dimers are observed whereas at higher pH (5–6) uranyl dimers are usually produced with monomers and tetramers also observed. A systematic study of the supramolecular interactions present in these materials was executed by varying the bromine position on the benzoic acid groups along with substituents on the chelating N-donor. Assembly via halogen and hydrogen bonding interactions as well as π–π interactions, including four instances of uranyl oxo-functionalization via halogen bonding, was observed depending on the experimental conditions utilized.

Graphical abstract: Combining coordination and supramolecular chemistry to explore uranyl assembly in the solid state

Supplementary files

Article information

Article type
Research Article
Submitted
29 Mph 2014
Accepted
07 Tsh 2014
First published
10 Tsh 2014

Inorg. Chem. Front., 2015,2, 141-156

Author version available

Combining coordination and supramolecular chemistry to explore uranyl assembly in the solid state

K. P. Carter and C. L. Cahill, Inorg. Chem. Front., 2015, 2, 141 DOI: 10.1039/C4QI00183D

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