Figure 2
The layer formed by the CuII cations and hypophosphite anions of the β-polymorph at 270 K, projected on to the (001) plane. Displacement ellipsoids are plotted at the 50% probability level and H atoms are shown as small spheres of arbitrary radii. The crystallographic axes and the axes of the strain tensor on cooling (1 = minimum, 2 = medium and 3 = maximum contraction) are shown. Axis 1 is normal to the projection plane. |