Perhalogenated Anions as Structure Directing Agents of Cationic Coordination Polymers
Year: 2024
Type: article
Abstract: We investigate the synthesis of coordination polymers (CPs) comprising silver cations, 4,4′-bipyridine and the charge-balancing perhalogenated acetate anions trifluoroacetate (CF 3 COO – ), trichloroacetate (CCl 3 COO – ), tribromoacetate (CBr 3 COO – ) or triiodoacetate (CI 3 COO – ). The syntheses involved anion exchange using the starting CP silver 4,4′-bipyridine acetate. Multianalytical characterization was conducted using powder X-ray diffraction, single crystal X-ray diffraction, optical microscopy and thermogravimetric analysis. Our findings revealed that CPs were formed with CF 3 COO – or CCl 3 COO – as the charge-balancing anion and exhibited notable stability. In contrast, reactions with CBr 3 COO – and CI 3 COO – showed that the starting anion undergoes decomposition to bromide, iodide or triiodide before being incorporated into the resulting material. This study sheds light on the interactions between perhalogenated anions and CPs and the potential for the use of CPs in the removal of perhalogenated “forever chemicals.”
Source: Crystal Growth & Design
Institution: University of California, Santa Cruz
Language: English
Subfield: Inorganic Chemistry
Field: Chemistry
Domain: Physical Sciences
Open Access status: green
Funder: National Science Foundation
OpenAlex ID: W4402501538