Fig. 3.
Semiintercalation, kinking, and cross-linking—the environment of a ruthenium complex. (A) Architecture of the cross-linking: One d(TCGGCGCCGA)2 unit showing barium ions and a single intercalated cation of 1 with the ruthenium complex in space-filling mode. Ligands on the ruthenium are distinguished by color: dppz, pink; TAP1, purple; TAP2, white. Hydrogen atoms of the ligands are shown in calculated positions. All other ruthenium cations are omitted for clarity. A second symmetry-related duplex is shown to generate the complete environment of the cation. (B) TAP1 semiintercalated between G3 and G4. (C) Angles between the normals to the G3 and G4 purine and TAP1 planes.