Angew. Chem. Int. Ed.: RESOLV member, Prof. Dr. Max M. Hansmann presents a novel method to generate room-temperature stable diazoalkenes by cleaving carbophosphinocarbenes and carbodicarbenes with nitrous oxide (N₂O). The work highlights the untapped potential of NHC/N₂ and N₂/L exchange at carbon(0) centers for rapid molecular assembly.