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	Dinitrogen pentoxide - Wikipedia, the free encyclopedia
		Dinitrogen pentoxide is the binary nitrogen oxide N
		Dinitrogen pentoxide sometimes used as a source of the NO functionality, often using it as a solution in chloroform:
		The decomposition of dinitrogen pentoxide produces the highly toxic nitrogen dioxide, signaled by the appearance of its characteristic reddish-brown color.
	en.wikipedia.org /wiki/Dinitrogen_pentoxide (512 words)

	Artemis Project: Lunar Dinitrogen Tetroxide Production
		If about 1 tonne of lunar oxygen could be produced, 235 kg of ammonia feedstock could produce the 571 kg of dinitrogen tetroxide needed for a nominal lunar ascent, as well as 360 kg of water and nitrogen.
		However, dinitrogen tetroxide is 69.6% oxygen, which can be readily extracted from lunar minerals, and indeed a lunar oxygen extraction pilot plant will be carried on the first mission.
		Dinitrogen tetroxide can be prepared by thermal decomposition of heavy metal nitrates, or by reducing or decomposing nitric acid.
	www.asi.org /adb/02/15/05/dinitrogen-tetroxide-production.html (1333 words)

	Preventing wastewater treatment failure with N-Tox® from Water Innovate - web4water (Site not responding. Last check: 2007-10-11)
		Dinitrogen oxide is rapidly detected when nitrification starts to fail, and the rate of this off-gas production is linked to oxygen depletion, the presence of toxic substances, and ammonia shock loadings.
		The occurrence of dinitrogen oxide under standard stable process conditions is normal in the denitrification part of the activated sludge process, but this occurrence is short lived and at very low concentrations.
		At ‘5 m’ average dinitrogen oxide concentrations declined and were found to be less than 0.9 mg/l up to 46 hours into the trial, with low levels maintained apart from a 2.1 mg/l peak (84 hours), a peak of 1.8 mg/l (107 hours), and a minor increase to 0.9 mg/l (138 hours).
	www.web4water.co.uk /products/product.asp?product=1875 (2013 words)

	Bioline International Official Site (site up-dated regularly)
		Dinitrogen fixation in an agroforestry context requires a careful approach which initially require derivation of the methods to be used and careful selection of the priorities of factors which influence the process.
		It is suggested that priority of the factors affecting the basic process of dinitrogen fixation, especially light and water, should be taken into consideration.
		Since dinitrogen fixation research is specific, there is need to clearly state the obejctives.
	www.bioline.org.br /request?ft01019 (4103 words)

	Nitrogen
		The fixation of dinitrogen occurs during discrete periods in the dark phase.
		Dinitrogen fixation is a rather energy-expensive process, however, in the dark, photosynthesis cannot directly supply the energy and reducing power needed.
		Instead of fixing dinitrogen continuously, the cells convert the glycerol into carbohydrates and store these for use in fueling dinitrogen fixation during discrete periods of a daily cycle.
	www.bio.purdue.edu /people/faculty/sherman/ShermanLab/Nitrogen.html (1094 words)

	ARS \| Publication request: Symbiotic Dinitrogen Fixation by Soybean and Alfalfa in the Mississippi River Basin
		Citation: Russelle, M.P., Birr, A.S. Symbiotic Dinitrogen Fixation by Soybean and Alfalfa in the Mississippi River Basin [abstract].
		Symbiotic dinitrogen fixation is a facultative process that is reduced by plant N uptake from other sources.
		Our analysis shows wide ranges in dinitrogen fixation (0 to 185 kg N/ha for soybean and 45 to 470 kg N/ha for alfalfa), reasonable mean rates (84 kg N/ha for soybean and 152 kg N/ha for alfalfa), and suggests that about 2.9 million Mg of fixed N is harvested annually in these two cultivated legumes.
	www.ars.usda.gov /research/publications/publications.htm?seq_no_115=167828 (304 words)

	Oxides (Site not responding. Last check: 2007-10-11)
		Dinitrogen monoxide is a colourless, non-toxic gas with a sweet odour.
		Dinitrogen trioxide is the least stable oxide and is formed from nitrogen monoxide and dinitrogen tetraoxide reacting:
		Dinitrogen Pentaoxide is highly acidic and is the acid anhydride of nitric acid, HNO
	www.chem.shef.ac.uk /chm131-2003/cha03zlb/oxides.html (354 words)

	Dinitrogen trioxide - Wikipedia, the free encyclopedia
		The chemical compound dinitrogen trioxide (chemical formula: N
		Dinitrogen trioxide is produced by mixing equal parts of nitric oxide (NO) and nitrogen dioxide (NO), and cooling the mixture below -21°C (-6°F).
		Dinitrogen trioxide is only stable in the liquid and solid phases, and decomposes back to NO and NO when heated above 3°C. It is the anhydride of the unstable nitrous acid (HNO
	en.wikipedia.org /wiki/Dinitrogen_trioxide (193 words)

	IJVS/volume2/edition1/section2c
		The Raman spectra of pure dinitrogen pentoxide in the solid state and in solution at different temperatures (-15°C, 0°C, 20°C) were recorded.
		The Raman spectra of the dinitrogen pentoxide were recorded for seven different samples under various conditions.
		Dinitrogen pentoxide is reasonably stable in nitric acid and in polar and non-polar organic solutions.
	www.ijvs.com /volume2/edition1/section2c.html (852 words)

	John Straub's lecture notes
		Dinitrogen in its ground electronic state is predicted to be diamagnetic.
		Our prediction that dinitrogen is diamagnetic while dioxygen is paramagnetic is in perfect agreement with the result of our experimental interrogation of the two gases.
		Beginning with dinitrogen and ending with dineon, plot the bond order as a function of the atomic number for the homonuclear diatomics.
	people.bu.edu /straub/courses/demomaster/o2n2magnetism.html (1185 words)

	Oxides of Nitrogen - Nitrogen (N) forms oxides in which nitrogen exhibits each of its positive oxidation numbers from ...
		Dinitrogen pentoxide, N2O5, is a white solid formed by the dehydration of nitric acid by phosphorus(V) oxide.
		Dinitrogen trioxide is the anhydride of nitrous acid, HNO2, and dinitrogen pentoxide is the anhydride of nitric acid, HNO3.
		Dinitrogen pentoxide reacts violently with metals, nonmetals, and organic materials, as in the following reactions with potassium (K) and iodine gas (I2).
	www.c-f-c.com /supportdocs/nitrogen_oxi.htm (681 words)

	American Society of Limnology and Oceanography
		The fate of ammonium was investigated in Skagerrak sediment from 700 m depth halfway between Norway and Denmark.
		This indicates that dinitrogen was formed with one N atom from nitrate and one from ammonium.
		In previous studies oxidation of ammonium to nitrate or directly to dinitrogen with manganese oxides was suggested.
	aslo.org /albuquerque2001/86.html (226 words)

	MIT Chemistry: Richard R. Schrock
		He also is interested in the synthesis and development of new acetylene metathesis catalysts, and in designing new ligands and exploring new catalytic reactions involving organometallic species.
		A second area of research concerns the reduction of dinitrogen in a well-defined manner, the ultimate goal being activation and reduction of dinitrogen using protons and electrons.
		This is the first time that dinitrogen has been reduced catalytically in a knowledgeable manner at room temperature and pressure.
	web.mit.edu /chemistry/www/faculty/schrock.html (462 words)

	Citebase - Activation and Protonation of Dinitrogen at the FeMo-Cofactor of Nitrogenase
		Activation and Protonation of Dinitrogen at the FeMo-Cofactor of Nitrogenase
		Dinitrogen in the bridging mode is activated by forming two bonds to Fe sites, which results in a reduction of the energy for the first hydrogen transfer by 123 kJ/mol.
		The axial binding mode with open sulfur bridge is less reactive by 30 kJ/mol and the energetic ordering of the axial and bridged binding mode is reversed in favor of the bridging dinitrogen during the first protonation.
	citebase.eprints.org /cgi-bin/citations?id=oai:arXiv.org:q-bio/0507012 (639 words)

	FRYZUK - Breathing dinitrogen since 1952
		What is especially intriguing is that both of these processes occur under contrasting conditions; Nitrogenase operates at atmospheric pressure and ambient temperature while the Haber-Bosch process requires high pressures and temperatures for efficient conversions.
		We are particularly interested in the discovery of new types of reactivity for coordinated dinitrogen and as well in the synthesis under mild conditions of dinitrogen complexes in which the N
		For example, we have been able to prepare complexes in which the dinitrogen unit is side-on bound and more recently, in the side-on, end-on mode.
	www.chem.ubc.ca /faculty/fryzuk/novice.html (626 words)

	ScienceWeek
		One problem is that dinitrogen in a synthetic complex may not approach the reactivity of dinitrogen at an enzyme site that is receiving a constant flux of electrons and protons.
		This issue may be addressed by attaching the dinitrogen complex to an electrode, but even then it is often difficult to define precisely the molecular species involved in the electrochemical cycle.
		This series cannot model the reduction of dinitrogen by nitrogenase, because the metal is in oxidation state zero when it binds dinitrogen.
	scienceweek.com /2004/sa040312-4.htm (1763 words)

	Dinitrogen Functionalization (Site not responding. Last check: 2007-10-11)
		Currently, industry relies on the venerable Haber-Bosch process for ammonia synthesis, a reaction that alone supports over 40% of the world’s population and is the source of 40-60% of the nitrogen in the human body.
		Recently, we have discovered a zirconocene dinitrogen complex that undergoes facile reaction with dihydrogen and cleavage of the N-N bond upon gentle warming.
		The reaction sequence is the first time these transformations have been observed in a well-defined transition metal complex.
	www.chem.cornell.edu /teh24/ResearchDinitrogenFunctionalization.htm (221 words)

	Getting a fix (Site not responding. Last check: 2007-10-11)
		Nitrogen in the air is in the form of 'dinitrogen' molecules, two atoms of nitrogen bound tightly together.
		Presumably they allow dinitrogen and water molecules stuck to the film's surface to react with one another (the nitrogen gas has to be moist for the process to work).
		Fixation of dinitrogen to a mesoscale solid salt using titanium oxide/conducting polymer system.
	www.mindswap.org /2002/nature/000720-7.xml (516 words)

	Chemistry 152 (Site not responding. Last check: 2007-10-11)
		Ammonium fluoride reacts with calcium nitrate to produce calcium fluoride, dinitrogen monoxide, and water.
		Dinitrogen tetroxide reacts with dinitrogen tetrahydride to form nitrogen gas and water.
		Assuming that all of the mass lost represents a loss of oxygen gas, and that all of the potassium chlorate decomposes, calculate the percent of potassium chlorate in the mixture.
	www.miramar.sdccd.cc.ca.us /faculty/dlingner/studyguides/stoichiometry-2.htm (467 words)

	Wind-Driven Surficial Oxygen Transfer into Treatment Lagoons and Implications on Dinitrogen Emission (Site not responding. Last check: 2007-10-11)
		When analyzing the complex biochemical and physical processes responsible for ammonia and dinitrogen gas emission in the animal waste treatment lagoons, surficial oxygen transfer plays an important role.
		Both theoretical and empirically derived oxygen coefficients were evaluated using data derived from investigations in controlled wind tunnels, floating reaeration devices in open waters, and natural open waters.
		The stoichiometric amounts of the maximum dinitrogen gas production per unit mass of O2 transferred were calculated based on three most likely biochemical pathways for ammonia removal in the treatment lagoons.
	aiche.confex.com /aiche/2005/techprogram/P28356.HTM (302 words)

	Chapter 8: The Nitrogen Cycle (Site not responding. Last check: 2007-10-11)
		Air consists of 80% dinitrogen gas and, with sediments and primary rock minerals, is one of the sinks of nitrogen on the earth.
		The major processes involved are denitrification (conversion of fixed nitrogen to dinitrogen gas or nitrous oxide, nitrification (conversion of ammonium ions to nitrite and nitrate, and nitrogen fixation (conversion of dinitrogen gas to ammonium ions or fixed forms of nitrogen.
		The simplest associations are those between dinitrogen fixing bacteria and plant surfaces such as the phyllosphere (leaf surface) or rhizosphere (region in the soil around roots).
	dwb.unl.edu /Teacher/NSF/C09/C09Links/bordeaux.uwaterloo.ca/biol446/chapter8.htm (4598 words)

	Darcof > Research > Darcof II > Dinitrogen fixation and nitrous oxide losses in grass-clover pastures
		Dinitrogen fixation and nitrous oxide losses in grass-clover pastures
		The difference in N2O emissions, however, may depend on the intensity, with which dinitrogen (N2) fixed by the legumes in grass-clover mixtures, are recycled in the grazed fields.
		Particularly urine induces N2O emissions, which also constitutes a major loss of N. Because of the uncertainties in quantifying N2 fixation, no contribution from N2 fixation to N2O emissions from legume pastures has actually been estimated so far.
	www.darcof.dk /research/darcofii/i13.html (327 words)

	FarnhamInfo
		Dinitrogen fixation and nitrogen transfer among red clover cultivars.
		Dinitrogen fixation and nitrogen transfer potentials of four red clover cultivars.
		Dinitrogen fixation and nitrogen transfer by four birdsfoot trefoil cultivars.
	extension.agron.iastate.edu /faculty/farnhaminfo.html (346 words)

	Dinitrogen Fixation in Kura Clover and Birdsfoot Trefoil -- Seguin et al. 92 (6): 1216 -- Agronomy Journal
		Dinitrogen Fixation in Kura Clover and Birdsfoot Trefoil -- Seguin et al.
		Dinitrogen Fixation in Kura Clover and Birdsfoot Trefoil
		Dinitrogen fixation was estimated using the isotope dilution
	agron.scijournals.org /cgi/content/full/92/6/1216 (3162 words)

	Discovery of the first dinitrogen: complex. \| Business (International) (Site not responding. Last check: 2007-10-11)
		The field that this discovery opened continues to provide surprises in the quest to understand biological nitrogen and to find new catalysts that convert dinitrogen to ammonia or to nitrogen-containing organics under mild conditions.
		The structure of molybdenum-iron-nitrogenase was solved in 1992 and work continues today to determine the exact site of coordination of dinitrogen gas--it may indeed be iron(II), a periodical table member of ruthenium (II).
		Many transformations of dinitrogen coordinated in transition metal complexes have now been discovered, and potentially useful soluble catalysts are starting to appear.
	www.allbusiness.com /periodicals/article/341641-1.html (622 words)

	Reactions of Ligating Dinitrogen in Dinuclear Complexes
		Teuben, Jan H. Dinuclear dinitrogen complexes have been reported for all transition metals with the exception of Hf, V, Ta, Tc and Ir.
		The field has been extensively reviewed recently, and this chapter will be limited to the reactivity of the dinitrogen ligand in complexes in which the units M–N2–M, M–N2–M' (M and M' = transition metal) are present and also to complexes M–N2–A where A = Lewis acid.
		The reactivity of the dinitrogen ligand in dinuclear complexes has been subject of intense research for only a small number of complexes and is limited mainly to Ti, Zr, and Fe.
	stratingh.eldoc.ub.rug.nl /root/TeubenJH/1980/NewTrChemNFixTeuben (109 words)

	INDIA, INVESTIGATIONS IN FRESHWATER FISH CULTURE
		(1973) found that the biological reduction of dinitrogen-oxide to dinitrogen form is inhibited by acetylene.
		Dinitrogen oxide accumulated during the incubation time should be recovered from the water saturated with acetylene, and measured with gas chromatograph.
		The quantity of dinitrogen oxide from denitrification in the gas phase (n
	www.fao.org /docrep/field/003/R7740E/R7740E05.htm (1008 words)

	ScienceWeek
		CHEMISTRY: DINITROGEN TO AMMONIA The following points are made by G. Jeffery Leigh (Science 2003 301:55): 1) The reactions by which dinitrogen, N2, is converted to ammonia by *nitrogen-fixing organisms are one of the continuing mysteries of chemistry and biology.
		In marked contrast, a similar chemical process requiring only atmospheric temperature and pressure is carried out by nitrogen-fixing bacteria, many of which live in symbiotic association with legume plants.
		The secret of their success is the enzyme nitrogenase, which transforms atmospheric nitrogen gas (dinitrogen) into ammonia that plants can then use for growth.
	scienceweek.com /2003/sb030801.htm (4255 words)

	John Straub's lecture notes (Site not responding. Last check: 2007-10-11)
		The dinitrogen tetroxide molecules also undergo collisions, at times leading to their decomposition into two molecules of nitrogen dioxide.
		A direct pathway for the formation of acid rain is the dissolution of nitrogen dioxide in the water droplets of clouds, followed by the chemical reaction of nitrogen dioxide with water to produce nitrous acid, HNO
		Question: Draw the Lewis structures for nitric oxide, dinitrogen oxide (nitrous oxide), nitrogen dioxide, dinitrogen tetroxide, dinitrogen pentoxide, nitrous acid, nitric acid and peroxynitric acid.
	people.bu.edu /straub/courses/demomaster/no2n2o4equilibria.html (411 words)

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