10.1021/acs.jpcb.6b03870.s002 Jorge Alvarez-Vicente Jorge Alvarez-Vicente Sahra Dandil Sahra Dandil Dipanjan Banerjee Dipanjan Banerjee H.Q. Nimal Gunaratne H.Q. Nimal Gunaratne Suzanne Gray Suzanne Gray Solveig Felton Solveig Felton Geetha Srinivasan Geetha Srinivasan Anna M. Kaczmarek Anna M. Kaczmarek Rik Van Deun Rik Van Deun Peter Nockemann Peter Nockemann Easily Accessible Rare-Earth-Containing Phosphonium Room-Temperature Ionic Liquids: EXAFS, Luminescence, and Magnetic Properties American Chemical Society 2016 LnCl 6 crystal structure Er compounds unit cell EXAFS Er samples Nd cation 666 14 Tb Magnetic Properties P 666 14 Dy luminescence properties P 4444 NIR emissions earth chlorometallate complexes Eu 2016-05-20 00:00:00 Journal contribution https://acs.figshare.com/articles/journal_contribution/Easily_Accessible_Rare-Earth-Containing_Phosphonium_Room-Temperature_Ionic_Liquids_EXAFS_Luminescence_and_Magnetic_Properties/3412897 A range of liquid rare earth chlorometallate complexes with the alkyl-phosphonium cation, [P<sub>666 14</sub>]<sup>+</sup>, has been synthesized and characterized. EXAFS confirmed the predominant liquid-state speciation of the [LnCl<sub>6</sub>]<sup>3–</sup> ion in the series with Ln = Nd, Eu, Dy. The crystal structure of the shorter-alkyl-chain cation analogue [P<sub>4444</sub>]<sup>+</sup> 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.