A Solid State Metathesis Route for the Synthesis of Lanthanum Nitridoborates.

ChemInform Abstract

Exothermic solid state metathesis reactions provide an effective route for the synthesis of nitridoborates of La, such as La₃B₃N₆, La₆B₄N₁₀, La_3+x(B₂N₄)N_x (x = 0, 1, 2), and for the superconductive compound La₃Ni₂B₂N₃. Ignition of the metathesis reaction between LaCl₃ and Li₃BN₂ occurs at 560 °C. Modified metathesis reactions with additional Li₃N are used to adjust certain N contents for desired compositions. Additional Li metal is used to synthesize metal-rich nitridoborates.