Journal article
Combining coordination and supramolecular chemistry to explore uranyl assembly in the solid state
Inorganic chemistry frontiers, Vol.2(2), pp.141-156
2015
DOI: 10.1039/C4QI00183D
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.
Details
- Title: Subtitle
- Combining coordination and supramolecular chemistry to explore uranyl assembly in the solid state
- Creators
- Korey P Carter - Department of Chemistry, The George Washington University, Washington, USAChristopher L Cahill - Department of Chemistry, The George Washington University, Washington, USA
- Resource Type
- Journal article
- Publication Details
- Inorganic chemistry frontiers, Vol.2(2), pp.141-156
- DOI
- 10.1039/C4QI00183D
- ISSN
- 2052-1553
- eISSN
- 2052-1553
- Language
- English
- Date published
- 2015
- Academic Unit
- Chemistry
- Record Identifier
- 9984216602002771
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