Abstract: | Ca5(PO4)3OH, Mr = 502.3, hexagonal, P 63/m, a = 9.4207(3), c = 6.8780(2) Å, V = 528.67 Å3, Z = 2, Dx = 3.156 Mg · m−3, CuKα, λKα1 = 1.54051, λKα2 = 1.54433 Å, μ = 26.25 mm−1, F(000) = 500, T = 294 K. The powder diffraction pattern was analysed by the Rietveld method. The parameters were refined by the program PFSR (DBW2.9) to final R-factors Rp = 0.079, Rwp = 0.081 and RB = 0.015. |