Subnitride

Subnitrides are a class of nitrides wherein the electropositive element is in excess relative to the “normal” nitrides.Simon, A. ”Group 1 and 2 Suboxides and Subnitrides — Metals with Atomic Size Holes and Tunnels” Coordination Chemistry Reviews 1997, volume 163, Pages 253–270.{{doi|10.1016/S0010-8545(97)00013-1}}

Examples of subnitrides include

• Dicyanoacetylene
• Na₁₆Ba₆N features a nitride-centered octahedral cluster of six barium atoms embedded in a matrix of sodium.
• Boron subnitrides (B₁₃N₂, B₅₀N₂, B₆N)