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| | Carboxylic Acids and Derivatives |
 | | Acyl intermediates include acyl anions, acyl radicals and acyl cations (synonym: acylium ions) which are formally derived from oxoacids R |
 | | Acyl anions, radicals and cations can formally be represented by canonical forms having a negative charge, an unpaired electron or a positive charge on the acid-generating element of the oxoacid. |
 | | An ambiguous term, which may imply either a higher oxidation state of a central atom, as in perchloric acid, or a derivative of hydrogen peroxide, as in CH Accordingly, it is not recommended as a class name. |
| www.chem.qmul.ac.uk /iupac/class/carba.html (607 words) |
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