Fig. 3: Products of ambient disproportionation reaction of N2 with (H2O)2+• characterized by spectral methods.
From: Efficient catalyst-free N2 fixation by water radical cations under ambient conditions
a Schematic illustration of the reaction assembly for scale-up reaction and the collection of reaction products. DC: direct current. The 76 anodes of the array were connected to the same positive terminal of the DC high voltage power. The figure is adapted with permission from refs. 18,20,21. b Ultraviolet-visible spectra of indooxine formed through the online reaction of the collected NH2OH with 8-quinolinol probe at different times of the reaction between N2 and (H2O)2+•. c Infrared spectra of the collected sample (red) and NH2OH•HCl standard (black). d Raman spectra of the collected sample (red) and NH2OH•HCl standard (black). e Fluorescence spectra of 7-hydroxycoumarin formed through the online reaction of the collected HNO with P-CM probe at different times of the reaction between N2 and (H2O)2+•. f Mass spectra of P-CM solution before and after collection of the reaction mixture, showing the formation of P-CM aza-ylide (P-CM-NH) and P-CM oxide (P-CM-O) due to the reaction between P-CM and HNO. The inset figure shows the tandem mass spectrum of protonated P-CM at m/z 451. P-CM: coumarin-based fluorescent probe.
