Amino radical
Chemical group (•NH2) / From Wikipedia, the free encyclopedia
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This article is about the neutral compound. For other compounds with the formula NH2 but different charges, see Azanide and Nitrenium ion.
In chemistry, the amino radical, ·NH2, also known as the aminyl radical or azanyl radical, 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. While NH2 as a functional group is common in nature, forming a part of many compounds (e.g. the phenethylamines), the radical cannot be isolated in its free form.[2]
Quick Facts Names, Identifiers ...
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Names | |||
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IUPAC name
Amino radical | |||
Systematic IUPAC name | |||
Other names
Amidogen; Aminyl radical; Azanyl radical | |||
Identifiers | |||
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Properties | |||
NH 2• | |||
Molar mass | 16.0226 g mol−1 | ||
Thermochemistry | |||
Std molar entropy (S⦵298) |
194.71 J K−1 mol−1 | ||
Std enthalpy of formation (ΔfH⦵298) |
190.37 kJ mol−1 | ||
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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