Multiple bonding in unbridged Mn–Mn dimers of solid-state nitridomanganate(iv) oxide Ca6[Mn2N6]O

Unbridged metal–metal bonding is rare in solid-state materials owing to preferred coordination of metals through main group anions. Here, we present a calcium nitridomanganate(IV) oxide Ca₆[Mn₂N₆]O with [MnN₃]₂ dimers prepared by hot isostatic pressing. This preparation opens the possibility to study unbridged metal–metal dimer systems in solid-state materials.