Easily Accessible Rare-Earth-Containing Phosphonium
Room-Temperature Ionic Liquids: EXAFS, Luminescence, and Magnetic
Properties

Alvarez-Vicente, Jorge; Dandil, Sahra; Banerjee, Dipanjan; Gunaratne, H.Q. Nimal; Gray, Suzanne; Felton, Solveig; Srinivasan, Geetha; Kaczmarek, Anna M.; Deun, Rik Van; Nockemann, Peter

doi:10.1021/acs.jpcb.6b03870.s002

jp6b03870_si_002.pdf (1007.04 kB)

Easily Accessible Rare-Earth-Containing Phosphonium Room-Temperature Ionic Liquids: EXAFS, Luminescence, and Magnetic Properties

journal contribution

posted on 2016-05-20, 00:00 authored by Jorge Alvarez-Vicente, Sahra Dandil, Dipanjan Banerjee, H.Q. Nimal Gunaratne, Suzanne Gray, Solveig Felton, Geetha Srinivasan, Anna M. Kaczmarek, Rik Van Deun, Peter Nockemann

A range of liquid rare earth chlorometallate complexes with the alkyl-phosphonium cation, [P_666 14]⁺, has been synthesized and characterized. EXAFS confirmed the predominant liquid-state speciation of the [LnCl₆]^3– ion in the series with Ln = Nd, Eu, Dy. The crystal structure of the shorter-alkyl-chain cation analogue [P₄₄₄₄]⁺ has been determined and exhibits a very large unit cell. The luminescence properties, with visible-light emissions of the liquid Tb, Eu, Pr, and Sm and the NIR emissions for the Nd and Er compounds, were determined. The effective magnetic moments were measured and fitted for the Nd, Tb, Ho, Dy, Gd, and Er samples.