Figure 1
Electric field (EF) vectors in the N2—C3—O1 plane of the `central' formamide molecule due to (a) the eight nearest-neighbouring molecules in the crystal, and all atoms with fractional coordinates (b) −1 < x, y, z < 2, (c) −2 < x, y, z < 3 and (d) −4 < x, y, z < 5 (the contribution of the `central' molecule to EF is not included). Subscripts of atom names identify the neighbouring molecules. Vectors with magnitudes larger than 0.15 e Å−2 are omitted for clarity. The size of the map is 6 × 6 Å with a grid spacing of 0.2 Å. |