The Quasi‐Binary Acetonitriletriide Sr(3)[C(2)N](2)

The first quasi‐binary acetonitriletriide Sr(3)[C(2)N](2) has been synthesised and characterised. The nearly colourless crystals were obtained from the reaction of Sr metal, graphite, and elemental N(2), generated by decomposition of Sr(N(3))(2), in a sealed Ni ampoule with the aid of an alkali metal flux. The structure of this compound was analysed via single‐crystal X‐ray diffraction and the identity of the [C(2)N](3−) anion was confirmed by Raman spectroscopy and further investigated by quantum‐chemical methods. Computed interatomic distances within the [C(2)N](3−) anion strikingly match the obtained experimental data.