Fig. 3

Solid-state structural features of 1. a A side view of 1 showing the concave distortion on the framework. The expanded view shows the coordination of µ-NO₂⁻ ions to Mn9 that results the distortion. b View of 1 along the C₃-axis. Mn9 is the central yellow sphere. Disordered PgC₅ alkyl chains, some axial ligands, and H atoms have been removed for clarity. Color code: Mn^II—purple, Mn^III—yellow, N—blue, O—red, and C—gray