During the enzymic reduction of N2 to NH3 by Mo-nitrogenase, free hydrazine (N2H4) is not detectable, but an enzyme-bound intermediate can be made to yield N2H4 by quenching the enzyme during turnover [Thorneley, Eady & Lowe (1978) Nature (London) 272, 557-558]. In contrast, we show here that the V-nitrogenase of Azotobacter chroococcum produces a small but significant amount of free N2H4 (up t...

Hydrazine (N2H4) is produced at industrial scale from the partial oxidation of ammonia or urea. The hydrogen content (12.5 wt%) and price of hydrazine make it a good source of hydrogen fuel, which is also easily transportable in the hydrate form, thus enabling the production of H2in situ. N2H4 is currently used as a monopropellant thruster to control and adjust the orbits and altitudes of space...

A fluorescent probe, 7-(diethylamino)-2-oxo-2H-chromene-4-carbaldehyde (probe 1), was designed and synthesized for the sensitive detection of hydrazine. The addition of N2H4 caused the fluorescence intensity of probe 1 to decrease. The probe's fluorescence was turn-off after adding N2H4, which could be observed under UV light at 365 nm. Moreover, once treated with different concentrations N2H4 ...

Submitted for the MAR09 Meeting of The American Physical Society Does Moisture Influence the Chemical Detection of Gas Molecules Adsorbed on Single-Wall Carbon Nanotubes? MING YU, University of Louisville, W.Q. TIAN, Jilin University, China, C.S. JAYANTHI, S.Y. WU, University of Louisville — In this work, the role of water in the detection of hydrazine (N2H4) by a single-wall carbon nanotube (S...

Periodic density functional theory (DFT) calculations have been performed to systematically investigate the effect of reaction intermediate on catalytic activity for hydrazine (N2H4) decomposition on Rh(111). Reaction mechanisms via intramolecular and NH2-assisted N2H4 decompositions are comparatively analyzed, including adsorption configuration, reaction energy and barrier of elementary step, ...

The title compound, poly[(μ2-hydrazine)(μ4-phosphato)iron(III)], [Fe(PO4)(N2H4)] n , was prepared under hydro-thermal conditions. Its asymmetric unit contains one Fe(III) atom located on an inversion centre, one P atom located on a twofold rotation axis, and two O, one N and two H atoms located on general positions. The Fe(III) atom is bound to four O atoms of symmetry-related PO4 tetra-hedra a...

Complexes of 1-Naphthoxy acetic acid of divalent transition ions, with neutral hydrazine were prepared and characterized by the spectroscopic methods, IR & UVvisible, magnetic measurements and simultaneous TG – DTA methods. They are sparingly soluble in water and ethanol, formulated as [M(N2H4)2{2C10H7OCH2(COO)}2].4H2O where M = Co & Ni, [M(N2H4){2-C10H7OCH2 (COO)}2] . nH2O where M = Mn, Zn & C...

The calcium amidoborane hydrazinates, Ca(NH2BH3)2·nN2H4, were firstly synthesized by reacting different molar ratios of Ca(NH2BH3)2 and N2H4. In particular, Ca(NH2BH3)2 and N2H4 with a molar ratio of 1 : 2 crystallizes into the orthorhombic symmetry P212121 space group with the lattice parameters of a = 6.6239(4) Å, b = 13.7932(6) Å, c = 4.7909(2) Å. The dehydrogenations of calcium amidoborane ...

Complexes of 1-Naphthoxy acetic acid of divalent transition ions, with neutral hydrazine were prepared and characterized by the spectroscopic methods, IR & UVvisible, magnetic measurements and simultaneous TG – DTA methods. They are sparingly soluble in water and ethanol, formulated as [M(N2H4)2{2C10H7OCH2(COO)}2].4H2O where M = Co & Ni, [M(N2H4){2-C10H7OCH2 (COO)}2] . nH2O where M = Mn, Zn & C...