Single crystal growth and characterization of NaxLn1−xMoO4, Ln=La, Ce, Pr, Nd, Sm, and Eu (x=0.397–0.499)

• Six lanthanide sodium molybdates have been synthesized and characterized.
• An in situ reduction was carried out using Mo as a metal reducing agent.
• UV/Vis and magnetic susceptibility data were collected.
• Eu0.603(2)Na0.397(2)MoO4 was found to possess the highest Mo5+ content at 20.6%.

Single crystals of La0.516(3)Na0.484(3)MoO4, Ce0.512(2)Na0.488(2)MoO4, Pr0.502(2)Na0.498(2)MoO4, Nd0.501(2)Na0.499(2)MoO4, Sm0.509(2)Na0.491(2)MoO4, and Eu0.603(2)Na0.397(2)MoO4 were grown for the first time out of an alkali metal halide eutectic flux. All compounds crystallize in the tetragonal space group I41/a. UV/Vis measurements show the presence of an absorption edge for all compounds except Eu0.603(2)Na0.397(2)MoO4. The temperature dependence of the magnetic susceptibility was measured for all compounds and found to be paramagnetic across the entire 2–300 K temperature range measured.

Single crystals of La0.516(3)Na0.484(3)MoO4, Ce0.512(2)Na0.488(2)MoO4, Pr0.502(2)Na0.498(2)MoO4, Nd0.501(2)Na0.499(2)MoO4, Sm0.509(2)Na0.491(2)MoO4, and Eu0.603(2)Na0.397(2)MoO4 were grown for the first time out of an alkali metal halide eutectic flux. All compounds crystallize in the tetragonal space group I41/a. Eu0.603(2)Na0.397(2)MoO4 was found to possess the highest Mo5+ content at 20.6%. UV/Vis, magnetic susceptibility, and a bond valence sum analysis were performed on all samples.Figure optionsDownload as PowerPoint slide