Figure 6
Electrostatic potential for a cluster formed by three adjacent layers of the same trimer, as shown in Fig. 5(b). Contour maps are shown in the least-squares plane defined by I, N, C3 and C6 and by the same atoms related by the (1 + x, y, z) symmetry operation. Atom positions within 0.5 Å of the plane are indicated by a + symbol. Contours are as in Fig. 5. |