119775-10-9

Usage

InChI:InChI=1/H4N2/c1-2/h1-2H2

Upstream product

• 7647-01-0 hydrogenchloride 
• 7664-93-9 sulfuric acid 
• 53876-74-7 3,6-di-naphthalen-2-yl-1,2-dihydro-[1,2,4,5]tetrazine 
• 626-55-1 3-Bromopyridine 
• 444683-52-7 1,2-dihydro-[1,2,4,5]tetrazine-3,6-dicarboxylic acid diethyl ester 
• 290-96-0 s-Tetrazine 
• 1558-23-2 3,6-dimethyl-1,2,4,5-tetrazine 
• 13717-91-4 3,6-diethyl-1,2,4,5-tetrazine 
• 40925-73-3 5-hydrazinyl-1H-tetrazole 
• 67-56-1 methanol 
• 507-40-4 tert-butylhypochlorite 
• 623-11-0 1-methyl-4-nitrosobenzene 
• 57-13-6 urea 
• 3530-14-1 hydroxyacetylhydrazine 

Downstream Products

• 4676-99-7 2-phenyl-indol-3-one oxime 
• 17433-93-1 4-(4-nitrophenyl)semicarbazide 
• 19103-51-6 5,7-dimethoxy-2-(4-methoxyphenyl)-4H-chromene 
• 113061-93-1 5-benzofuran-2-yl-4-(4-nitro-phenylazo)-1H-pyrazole-3-carboxylic acid ethyl ester 
• 50-00-0 formaldehyd 
• 90-02-8 salicylaldehyde 
• 2209-59-8 1,6-diphenyl-dithiodiurea 
• 27412-71-1 5-phenyl-1H-pyrazol-3(2H)-one 
• 14478-73-0 3,6-diphenyl-1,2-dihydro-1,2,4,5-tetrazine 
• 2166-09-8 4,6-diphenyl-4,5-dihydropyridazin-3(2H)-one 
• 27412-70-0 3-phenylprop-2-yne hydrazide 
• 50871-93-7 hydrazine-N,N'-bis-carbothioic acid bis-(4-bromo-anilide) 
• 56426-41-6 3-methyl-5-phenylpyrazole 
• 82166-21-0 methyl cyclohexane 

Relevant academic research and scientific papers

X-ray diffraction study of lithium hydrazinium sulfate and lithium ammonium sulfate crystals under a static electric field

X-ray diffraction studies are made on proton-conducting polar lithium hydrazinium sulfate and ferroelectric lithium ammonium sulfate. The X-ray rocking curves recorded with in situ electric field along the polar b axis of lithium hydrazinium sulfate (direction of proton conductivity) show a strong enhancement of the 0k0 diffraction intensity. The corresponding 0k0 X-ray topographs reveal extinction contrast consisting of striations parallel to the polar axis. They disappear when the electric field is switched off. The effect is very strong in 0k0 but invisible in h0l reflections. It is present only if the electric field is parallel to the polar axis b. This unusual X-ray topographic contrast is correlated with the proton conduction. It is supposed that, under electric field, an inhomogeneous charge distribution develops, distorting the crystal lattice. Similar experiments on lithium ammonium sulfate also show contrast variations, but of quite different behaviour than before. In this case they result from changes of the ferroelectric domain configuration under electric field.

Synthesis and reactivity of tungsten- and molybdenum-dinitrogen complexes bearing ferrocenyldiphosphines toward protonolysis

Novel tungsten- and molybdenum-dinitrogen complexes bearing 1,1′-bis(diethylphosphino)ferrocenes as auxiliary ligands have been prepared and characterized crystallographically. Reactions of these complexes with an excess amount of sulfuric acid in methano

Direct observation of NH2 reactions with oxygen, amino acids, and melanins

We report the direct observation of the quenching of the weakly absorbing transient due to the amino radical by oxygen and, hence determine, by a totally direct method, the corresponding rate constant (k = (1.1 ± 0.1) × 109 dm3 mol-1 s-1). We also report the rate constants for the reactions of the amino radical with several amino acids and models of black eumelanin and blond/red phaeomelanin. These reactions lead to a mechanism, based on free radicals, that can explain why ammonia is useful in commercial hair (melanin) bleaching, avoiding excessive amino acid (hair protein) damage.

Facile, cost-effective plasma synthesis of self-supportive FeS: X on Fe foam for efficient electrochemical reduction of N2 under ambient conditions

The electrochemical N2 reduction reaction (NRR) in an aqueous medium has recently aroused great attention for the synthesis of NH3 under ambient conditions. However, this process generally suffers from a low NH3 production rate and often requires a noble-metal based electrocatalyst with some sophisticated nanosynthesis method. This work reports a new non-precious, self-supportive iron sulfide (FeSx) NRR electrocatalyst, synthesized by a simple H2S-plasma treatment on low-cost Fe foam. The H2S-plasma treatment sulfurizes the Fe surface to afford a self-supportive FeSx thin layer on the Fe foam (FeSx/Fe). The synthesized FeSx/Fe foam can be directly used as the electrode for the NRR, and it is demonstrated to show a remarkable NH3 production rate of 4.13 × 10-10 mol s-1 cm-2 and a high faradaic efficiency of 17.6%, significantly outperforming many other reported non-precious electrocatalysts. Further material characterization shows that the surface FeSx converts to the mackinawite FeS after the NRR; the mackinawite FeS is possibly the actual high-activity NRR electrocatalyst, and density functional theory calculation is further employed to elucidate the NRR mechanism. Given the high performance and low cost, we envision that the plasma-synthesized FeSx/Fe will be of great promise for the electrochemical NH3 synthesis under ambient conditions.

ELECTROCHEMICAL FIXATION OF MOLECULAR NITROGEN ON p-TYPE GALLIUM PHOSPHIDE PHOTOCATHODE.

Electrochemical fixation of molecular nitrogen to ammonia and hydrazine at p-type GaP photocathodes was studied in nonaqueous electrolytes containing either one of titanium tetraisopropoxide, titanium trichloride, vanadium trichloride, or chromium trichloride and a trace amount of water. Positive evidences for the nitrogen fixation were obtained in these electrolytes, but the current efficiency was quite low, and usually less than 1%. It is suggested from this study that there are a variety of choices of electrolyte systems for the nitrogen fixation.

ELECTROCHEMICAL CONVERSION OF NITROUS OXIDE INTO AMMONIA IN THE PRESENCE OF IRON COMPLEXES

The electrochemical conversion of NO into NH3 has been studied using iron complexes as homogenous catalysts.The present result show that small amounts of NH2OH and N2H4 are formed, but no detectable amounts of N2O.The conversion efficiency depends on the

Electrocatalytic Reduction of Nitrogen to Hydrazine Using a Trinuclear Nickel Complex

Activation and reduction of N2 have been a major challenge to chemists and the focus since now has mostly been on the synthesis of NH3. Alternatively, reduction of N2 to hydrazine is desirable because hydrazine is an excellent energy vector that can release the stored energy very conveniently without the need for catalysts. To date, only one molecular catalyst has been reported to be able to reduce N2 to hydrazine chemically. A trinuclear T-shaped nickel thiolate molecular complex has been designed to activate dinitrogen. The electrochemically generated all Ni(I) state of this molecule can reduce N2 in the presence of PhOH as a proton donor. Hydrazine is detected as the only nitrogen-containing product of the reaction, along with gaseous H2. The complex reported here is selective for the 4e-/4H+ reduction of nitrogen to hydrazine with a minor overpotential of ～300 mV.

Heterogeneous Reactions of Nitrogen Monoxide on Titanium Dioxide Photocatalysts in Solutions

Heterogeneous reactions of nitrogen monoxide on illuminated TiO2 catalysts in 1 mol dm-3 HClO4 were studied by electrochemical analysis.Nitrogen monoxide was reduced to ammonia and hydrazine.The main reaction was found to be a chemical reaction of hydroxylamine as a reaction intermediate with nitrogen monoxide to give molecular nitrogen.Nitrate was detected as an oxidation product formed by the counterpart reaction of the reduction of nitrogen monoxide.

Fixation of Dinitrogen at an Asymmetric Binuclear Titanium Complex

A new type of dititanium dinitrogen complex supported by a triphenolamine (TPA) ligand is reported. Analysis by single-crystal X-ray diffraction and Raman and NMR spectroscopy reveals different coordination geometries for the two titanium centers. Hence, coordination of TPA and a nitrogen ligand results in trigonal-bipyramidal geometry, while an octahedral titanium center is obtained upon additional coordination of an ethoxide generated upon C-O bond cleavage in a diethyl ether solvent molecule. The titanium complex successfully generates ammonia in the presence of an excess amount of PCy3HI and KC8 in 154% yield (per titanium atom). A titanium complex with a bulkier TPA does not form a dinitrogen complex, and mononuclear titanium dinitrogen complexes were not accessible, presumably because of the high tendency of early transition metals to form binuclear dinitrogen complexes.

Electrocatalysis of N2 to NH3 by HKUST-1 with High NH3 Yield

Electrolytic ammonia synthesis from nitrogen at ambient conditions is appearing as a promising alternative to the Haber-Bosch process which is consuming high energy and emitting CO2. Here, a typical MOF material, HKUST-1 (Cu?BTC, BTC=benzene-1,3,5-tricarboxylate), was selected as an electrocatalyst for the reaction of converting N2 to NH3 under ambient conditions. At ?0.75 V vs. reversible hydrogen electrode, it achieves excellent catalytic performance in the electrochemical synthesis of ammonia with high NH3 yield (46.63 μg h?1 mg?1 cat. or 4.66 μg h?1 cm?2) and good Faraday efficiency (2.45%). It is indicated that the good performance of the HKUST-1 catalyst may originate from the formation of Cu(I). In addition, the catalyst also has good selectivity for N2 to NH3.