Factors influencing the formation of polybromide monoanions in solutions of ionic liquid bromide salts. Issue 10 (18th February 2016)

• Record Type: Journal Article
• Authors: Easton, Max E.; Ward, Antony J.; Chan, Bun; Radom, Leo; Masters, Anthony F.; Maschmeyer, Thomas
• Is Part Of: Physical chemistry chemical physics. Volume 18:Issue 10(2016)
• Page Start: 7251
• Page End: 7260
• Publication Date: 2016-02-18
• Subjects: Chemistry, Physical and theoretical -- Periodicals; 541.3
• DOI: 10.1039/c5cp06913k
• Languages: English
• ISSNs: 1463-9076

Abstract

Abstract : The formation of polybromide addition products from six different bromide salts was analyzed via spectroscopic and computational means. The examination of tribromide and pentabromide anion formation yielded important insights into the targeted synthesis of highly efficient bromine sequestration agents. Abstract : Six different bromide salts – tetraethylammonium bromide ([N2, 2, 2, 2 ]Br, 1 Br), 1-ethyl-1-methylpiperidinium bromide ([C2 MPip]Br, 2 Br), 1-ethyl-1-methylpyrrolidinium bromide ([C2 MPyrr]Br, 3 Br), 1-ethyl-3-methylimidazolium bromide ([C2 MIm]Br, 4 Br), 1-ethylpyridinium bromide ([C2 Py]Br, 5 Br), and 1-(2-hydroxyethyl)pyridinium bromide ([C2 OHPy]Br, 6 Br) – were studied in regards to their capacity to form polybromide monoanion products on addition of molecular bromine in acetonitrile solutions. Using complementary spectroscopic and computational methods for the examination of tribromide and pentabromide anion formation, key factors influencing polybromide sequestration were identified. Here, we present criteria for the targeted synthesis of highly efficient bromine sequestration agents.