Figure 4
Complete set of hydrogen bonds, represented as dashed lines, in the tetramer formed by molecules A and B (left), and in the tetramer formed by molecules C and D (right). Figures are oriented down the crystallographic threefold axis. Labels (1)⋯(8) on hydrogen bonds indicate the entry in Table 2. Each cluster has four independent bonds, affording 12 bonds for the tetramer, consistent with the C3 point symmetry of the tetramer. These figures can be compared to the model published in 1999 (see Fig. 4 in Serrano-González et al., 1999). |