by Axel Drefahl • www.axeleratio.com
| Short formula-like notations for organic anion classes support efficient search of information about anions and their salts by specifying selected substructural parts of the cation structure. Herein, notations for frequently occurring anion classes are described. These notations can be used in the Chemical Property Viewer to find members of classes of Ionic Liquids and Solids. | |||||||||||||||||||||||||
| A large number of anions consist of a functional, charge-carrying group and one or more alkyl groups. Notations for classes of such anions are derived by putting the alkyl group symbol R in front of the functional group notation. In the case of multiple alkyl groups R is followed by an integer indicating the number of alkyl groups. If the site of substitution is relevant, an integer specifying that site is placed before R. Frequently used anion notations are listed in the following table. | |||||||||||||||||||||||||
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Hint |
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Note that the integer 4 in R4B counts the alkyl substituents. In the notations following R4B, the integer 4
indicates the para-substitution of R at the phenyl (Ph) ring. The given examples should make it easy
to write notations for other classes of alkyl-substituted anions. A few other notations are supported within the Chemical Property Viewer, for example pfaBF3 as a short form for perfluoroalkyltrifluoroborate. |
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Last update was made on March 29 in 2008 by Axel Drefahl Please, email comments and suggestions to axeleratio@yahoo.com |
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| © 2008 Axel Drefahl. All rights reserved. |