Fig. 7: Solid-state structures of 4, 5, and 7.

a Thermal ellipsoid drawing of 4 at 30% probability. b Thermal ellipsoid drawing of 5 at 30% probability. c Thermal ellipsoid drawing of 7 at 30% probability. For clarity, all hydrogen atoms and the anionic fragment in 4 are omitted, and Dipp substituents are shown in wireframe style.