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In chemistry, the amino radical, ·NH2, also known as the aminyl or azanyl, is the neutral form of the amide ion (NH− 2). Aminyl radicals are highly reactive and consequently short-lived, like most radicals; however, they form an important part of nitrogen chemistry. In sufficiently high concentration, amino radicals dimerise to form hydrazine.
Azanide is the IUPAC -sanctioned name for the anion NH− 2. The term is obscure; derivatives of NH− 2 are almost invariably referred to as amides, [1][2][3] despite the fact that amide also refers to the organic functional group – C (=O)−NR2. The anion NH− 2 is the conjugate base of ammonia, so it is formed by the self-ionization of ...
H 2 + NH 2 → NH 3 + H. has a rate constant of 2.2 × 10 −15. Assuming H 2 densities of 10 5 and [NH 2]/[H 2] ratio of 10 −7, this reaction proceeds at a rate of 2.2 × 10 −12, more than three orders of magnitude slower than the primary reaction above. Some of the other possible formation reactions are: H − + [NH 4] + → NH 3 + H 2 ...
Methanediamine is the simplest diamine.Its chemical formula is CH 2 (NH 2) 2, and its structure consists of two amino groups on a central carbon atom. Although methanediamine it only exists transiently in solution, [2] its hydrochloride salt has been used in chemical synthesis since 1914. [3]
3 Ca + N 2 → Ca 3 N 2 3 Mg + 2 NH 3 → Mg 3 N 2 + 3 H 2 (at 900 °C) 3 Zn(NH 2) 2 → Zn 3 N 2 + 4 NH 3. Many variants on these processes are possible. The most ionic of these nitrides are those of the alkali metals and alkaline earth metals, Li 3 N (Na, K, Rb, and Cs do not form stable nitrides for steric reasons) and M 3 N 2 (M = Be, Mg ...
NH2. NH2 or similar may refer to: Azanide (chemical formula NH−2) Amino radical (chemical formula NH•2) Nitrenium ion (chemical formula NH+2) Primary amide group (chemical formula -NH2) National Harbor–Alexandria Line (Route NH2), a WMATA bus line between Alexandria, Virginia and Prince George's County, Maryland. National Highway 2 (India)
2 NH 3 + H 2 SO 4 → (NH 4) 2 SO 4. A mixture of ammonia gas and water vapor is introduced into a reactor that contains a saturated solution of ammonium sulfate and about 2% to 4% of free sulfuric acid at 60 °C. Concentrated sulfuric acid is added to keep the solution acidic, and to retain its level of free acid.
Ammonium cation [NH 4] + forms hydrogen bonds with cyanate anion O=C=N −, but to N, not to O. [1] The compound is notable as the precursor in the Wöhler synthesis of urea, an organic compound, from inorganic reactants. [2] This led to the discarding of the Vital force theory, suggested earlier by Berzelius. NH + 4 + OCN − → (NH 2) 2 CO [3]