Données cristallographiques des formes polymorphes du complexe racémique de fluorure de tris(éthylènediamine)cobalt(III)

(±)Co(en)₃F₃, [Co(C₂H₈N₂)₃]F₃, C₆H₂₄C_oN₆^{3 +}. 3F⁻, crystallizes in three different forms, F, A and P. F and A forms are orthorhombic with space groups Fmmm and Amam respectively (or the non-centrosymmetric equivalent groups F2mm and Ama2 types). Their lattice constants are (F) a = 13.448 (3), b = 28.855 (8) and c = 9.462 (4) Å; (A) a = 12.262 (2), b = 28.863 (9) and c = 9.386 (2) Å. The P form is monoclinic with space group P2₁/n and unit cell a = 12.575 (5), b = 27.65 (1) and c = 19.65 (1) Å, β = 90.5°. X-ray powder diffraction data are quoted for F and A forms.