Figure 6
Unit-cell angle β of 1,2-diaminoethane crystalline phases plotted as a function of temperature at 0.1 MPa (the reverse scale above the plot) for the temperature-frozen phase Iα (red down-triangles), and pressure at 296 K (the scale at the bottom) for phases Iα, Iβ and Iγ (black up-triangles) and phase III (green open down-triangles). The lines joining the points have been drawn as a guide to the eye. Where not indicated, the error bars are smaller than the symbols used. |