A Magnetocaloric Glass from an Ionic-Liquid Gadolinium Complex.

[Gd (L) (H O) ](Tf N) was obtained from reaction of Gd O with 1-carboxymethyl-3-ethylimidazolium chloride (LHCl). The material was found to be an ionic liquid that freezes to glassy state on cooling to -30 °C. Variable-temperature magnetic studies reveal the presence of weak magnetic intramolecular interactions in the glass.