Dinitrogen oxide

Dinitrogen oxide can potentially refer to any of at least four compounds:
 * Dinitrogen monoxide (nitrous oxide), N2O
 * Dinitrogen dioxide, N2O2, an unstable dimer of nitric oxide
 * Dinitrogen trioxide, N2O3
 * Dinitrogen tetroxide, N2O4
 * Dinitrogen pentoxide, N2O5