Search results
Results from the WOW.Com Content Network
In organic chemistry, alkylammonium refers to cations of the formula [R 4−n NH n] +, where R = alkyl and 1≤ n ≤ 4. The cations with four alkyl substituents, i.e., [R 4 N] +, are further classified as quaternary ammonium cations and are discussed more thoroughly in the article with that title.
The hydrogen atoms in the ammonium ion can be substituted with an alkyl group or some other organic group to form a substituted ammonium ion (IUPAC nomenclature: aminium ion). Depending on the number of organic groups, the ammonium cation is called a primary , secondary , tertiary , or quaternary .
A cycloalkyl group is derived from a cycloalkane by removal of a hydrogen atom from a ring and has the general formula −C n H 2n−1. [2] Typically an alkyl is a part of a larger molecule. In structural formulae, the symbol R is used to designate a generic (unspecified) alkyl group. The smallest alkyl group is methyl, with the formula −CH 3 ...
Quaternary ammonium cation. The R groups may be the same or different alkyl or aryl groups. Also, the R groups may be connected. In organic chemistry, quaternary ammonium cations, also known as quats, are positively-charged polyatomic ions of the structure [NR 4] +, where R is an alkyl group, an aryl group [1] or organyl group.
Quaternary ammonium compounds are positively charged polyatomic ions of the structure NR 4 + with R being alkyl or aryl groups. The R groups may also be connected. The R groups may also be connected. Wikimedia Commons has media related to Quaternary ammonium compounds .
Alkyl groups are saturated hydrocarbons substituents with the general formula C n H 2n+1 Pages in category "Alkyl groups" The following 7 pages are in this category ...
This name has been discarded as modern chemistry considers color less important than molecular structure. Other metal ammine complexes also were labeled according to their color, such as purpureo (Latin: purple) for a cobalt pentammine complex, and praseo (Greek: green) and violeo (Latin: violet) for two isomeric tetrammine complexes. [5]
N-alkylation is a general and useful route to quaternary ammonium salts from tertiary amines, because overalkylation is not possible. Examples of N-alkylation with alkyl halides are the syntheses of benzylaniline, [5] 1-benzylindole, [6] [7] and azetidine. [8] Another example is found in the derivatization of cyclen. [9]