Fig. 5: Synthesis and X-ray crystal structures of 12.

a Synthesis of 12 through 11. b Top view of crystal structure of 12, and c side view of crystal structure of 12. Solvent molecules and hydrogen atoms on carbon have been omitted for clarity.
a Synthesis of 12 through 11. b Top view of crystal structure of 12, and c side view of crystal structure of 12. Solvent molecules and hydrogen atoms on carbon have been omitted for clarity.