Journal
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
Volume 12, Issue 31, Pages 8919-8925Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/b920652n
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Funding
- Douglass College
- Rutgers Aresty Research Center
- National Science Foundation [CHE-0718391]
- Department of Energy
- US Department of Energy [DE-AC02-98CH10886]
- Division of Chemical Sciences, Geosciences and Biosciences, Office of Basic Energy Sciences
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Four paramagnetic ionic compounds have been prepared and their magnetic, structural and thermal properties have been investigated. The four compounds are methylbutylpyrrolidinium tetrachloroferrate(III) ([Pyrr(14)](+)/[FeCl(4)](-)), methyltributylammonium tetrachloroferrate(III) ([N(1444)](+)/[FeCl(4)](-)), butylmethylimidazolium tetrachloroferrate(III) ([bmim](+)/[FeCl(4)](-)) and tetrabutylammonium bromotrichloroferrate(III) ([N(4444)](+)/[FeBrCl(3)]-). Temperature-dependent studies of their magnetic behaviors show that all four compounds are paramagnetic at ambient temperatures. Glass transitions are observed for only two of the four compounds, [Pyrr(14)](+)/[FeCl(4)](-) and [bmim](+)/[FeCl(4)](-). Crystal structures for [Pyrr(14)](+)/[FeCl(4)](-) and [N(1444)](+)/[FeCl(4)](-) are compared with the previously reported [N(4444)](+)/[FeBrCl(3)](-).
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