Before revision: Synthesis Lanthanum phosphide can be made by heating lanthanum metal with excess phosphorus in a vacuum: 4 La + P4 → 4 LaP Physical properties Lanthanum phosphide forms black crystals of a cubic system, space group Fm3m , cell parameters a = 0.601 nm, with number of formulas per unit cell Z = 4.
After revision: Synthesis Lanthanum phosphide can be made by heating lanthanum metal with excess phosphorus in a vacuum: 4 La + P4 → 4 LaP Physical properties Lanthanum phosphide forms black crystals of a cubic system, space group Fmm , cell parameters a = 0.6025 nm, with number of formulas per unit cell Z = 4.