The article presents a novel method for efficient, catalyst-free nitrogen (N₂) fixation under ambient conditions using water plasma. The process involves the disproportionation of N₂ into economically valuable products, nitroxyl (HNO) and hydroxylamine (NH₂OH), through the formation of a distinctive intermediate, HONH-HNOH⁺. This reaction is facilitated by the coordination of electronically excited N₂ with the water dimer radical cation, (H₂O)₂⁻, in a two-center-three-electron configuration. The products are collected in a 76-needle array discharge reactor, with yields of 1.14 μg cm⁻² h⁻¹ for NH₂OH and 0.37 μg cm⁻² h⁻¹ for HNO. The potential applications of these compounds are highlighted, including their use in ammonia production, chemical reactions with cysteine, and neuroprotective effects for HNO. The study offers a promising alternative to traditional N₂ fixation methods, such as the Haber-Bosch process, by providing a more environmentally friendly and cost-effective approach.The article presents a novel method for efficient, catalyst-free nitrogen (N₂) fixation under ambient conditions using water plasma. The process involves the disproportionation of N₂ into economically valuable products, nitroxyl (HNO) and hydroxylamine (NH₂OH), through the formation of a distinctive intermediate, HONH-HNOH⁺. This reaction is facilitated by the coordination of electronically excited N₂ with the water dimer radical cation, (H₂O)₂⁻, in a two-center-three-electron configuration. The products are collected in a 76-needle array discharge reactor, with yields of 1.14 μg cm⁻² h⁻¹ for NH₂OH and 0.37 μg cm⁻² h⁻¹ for HNO. The potential applications of these compounds are highlighted, including their use in ammonia production, chemical reactions with cysteine, and neuroprotective effects for HNO. The study offers a promising alternative to traditional N₂ fixation methods, such as the Haber-Bosch process, by providing a more environmentally friendly and cost-effective approach.