Figure 2
A section of the difference electron-density map for the redetermined title structure without the atoms H1x and H1y. A build-up of the electron density between the atom O1 (red) and N2iii (blue) [symmetry codes: (iii) x + 1, y, z + 1] is shown; the larger and the smaller peaks correspond to the electron density of 0.12 and 0.11 e A−3, respectively. These peaks were assigned to the respective positions of H1x and H1yiii. The positive and negative electron densities are indicated by continuous and dashed lines, respectively. The increment of the electron density between neighbouring contours is 0.01 e Å−3. Atom C7 is indicated by a gray circle. |