Figure 6
Two-dimensional difference Fourier electron-density maps of the cHc phase. Positive contour levels from 0 e Å−3, step 0.03 e Å−3; negative contour levels at 0 e Å−3. (a) Projection perpendicular to the z axis (z = 0.083), the carbonate group (carbon in blue, oxygen in red) is imposed on the projection at z = 0.083. (b) Projection perpendicular to the y axis (z = 0.000). |