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Amine. In chemistry, amines (/ ə ˈ m iː n, ˈ æ m iː n /, [1] [2] UK also / ˈ eɪ m iː n / [3]) are compounds and functional groups that contain a basic nitrogen atom with a lone pair.Formally, amines are derivatives of ammonia (NH 3 (in which the bond angle between the nitrogen and hydrogen is 170°), wherein one or more hydrogen atoms have been replaced by a substituent such as an ...
Metal ammine complexes find many uses. Cisplatin (cis-[PtCl 2 (NH 3) 2]) is a drug used in treating cancer. [19] Many other amine complexes of the platinum group metals have been evaluated for this application. In the separation of the individual platinum metals from their ore, several schemes rely on the precipitation of [RhCl(NH 3) 5]Cl 2.
In organic chemistry, amine value is a measure of the nitrogen content of an organic molecule. [1] Specifically, it is usually used to measure the amine content of amine functional compounds. [ 2 ] It may be defined as the number of milligrams of potassium hydroxide (KOH) equivalent to one gram of epoxy hardener resin.
Compared to amines, amides are very weak bases. While the conjugate acid of an amine has a pK a of about 9.5, the conjugate acid of an amide has a pK a around −0.5. Therefore, compared to amines, amides do not have acid–base properties that are as noticeable in water. This relative lack of basicity is explained by the withdrawing of ...
In some cases, two equivalents of a secondary amine can be used, one equivalent serving as a base: [6] MCl n + n LiNR 2 → M(NR 2) n + n LiCl MCl n + 2n HNR 2 → M(NR 2) n + n HNR 2 ·HCl. Transition metal amide complexes have been prepared by these methods: [6] treating a halide complex with an alkali amide; deprotonation of a coordinated amine
Alkyl dimethyl amine oxide (chain lengths C10–C16) is the most commercially used amine oxide. [3] They are considered a high production volume class of compounds in more than one member country of the Organisation for Economic Co-operation and Development ( OECD ); with annual production over 26,000, 16,000 and 6,800 tonnes (28,700, 17,600 ...
Imines are intermediates in the alkylation of amines with formic acid in the Eschweiler-Clarke reaction. A rearrangement in carbohydrate chemistry involving an imine is the Amadori rearrangement . A methylene transfer reaction of an imine by an unstabilised sulphonium ylide can give an aziridine system.
For historical reasons, ammonia is named ammine in the nomenclature of coordination compounds. One notable ammine complex is cisplatin ( Pt(NH 3 ) 2 Cl 2 , a widely used anticancer drug. Ammine complexes of chromium (III) formed the basis of Alfred Werner 's revolutionary theory on the structure of coordination compounds.