Figure 2
Comparison of the conformations of diphenylsilanediylbis(4-benzoic acid) and its anions. (a) C2-symmetric structures. H2A: dark-green – XOZVIT; A2−: red – I (current work), blue – ZIGXEV-1, yellow – XOQXIL-1. (b) Asymmetric structures. HA−: light-green – XOZWAM; A2−: lilac – ZIGXIZ-1, pink – ZIGXIZ-2, orange – XOQXIL-2. Numbers accompanying refcodes refer to two structurally non-equivalent anions in a given compound. The disordered symmetric anion in ZIGXEV-2 is not shown. |