fig4

Figure 4. Fragments of the single-crystal structures of (A) Na₂B₁₂H₁₂·4 diglyme (RT) and (B) K₂B₁₂H₁₂·4 diglyme, illustrating the coordination modes of diglyme to alkali metal cations. Color code: Na, yellow; K, purple; B, dark blue; H, light grey; O, red; C, dark grey. RT: Room temperature.