Identify functional groups in organic molecules by entering molecular formula or structure, with detailed classification and nomenclature guidance
Identified Functional Groups
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Primary Functional Group
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Compound Classification
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Molecular Weight
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Functional groups are specific groupings of atoms within molecules that have their own characteristic properties, regardless of the other atoms present in a molecule. Common examples include alcohols, alkenes, alkynes, amines, carboxylic acids, aldehydes, ketones, esters, and ethers.
Alcohols contain a hydroxyl group (-OH) attached to a carbon atom. Ethers have an oxygen atom bonded to two carbon atoms (R-O-R'). Alcohols are named with the suffix '-ol' while ethers use the format 'alkyl alkyl ether' in common nomenclature.
Both contain a carbonyl group (C=O), but aldehydes have the carbonyl carbon bonded to at least one hydrogen atom and are found at the end of carbon chains. Ketones have the carbonyl carbon bonded to two other carbon atoms and are found within carbon chains.
Carboxylic acids contain a carboxyl group (-COOH) and are named with the suffix '-oic acid'. Esters are derivatives of carboxylic acids where the hydrogen of the carboxyl group is replaced by an alkyl group, forming R-COO-R' and named as 'alkyl alkanoate'.
The main nitrogen functional groups are amines (R-NH2, primary; R2NH, secondary; R3N, tertiary), amides (R-CO-NH2), and nitriles (R-CN). Amines are basic compounds while amides are neutral, and nitriles contain a triple bond between carbon and nitrogen.
Alkanes contain only single C-C bonds (saturated hydrocarbons), alkenes contain at least one C=C double bond, and alkynes contain at least one C≡C triple bond. They're named with suffixes -ane, -ene, and -yne respectively.
Aromatic compounds contain benzene rings or similar structures with delocalized π electrons. They follow special stability rules (Hückel's rule) and have unique naming conventions. Benzene derivatives are often named using the benzene ring as the base structure.
IUPAC names follow systematic rules and are preferred in scientific literature for precision and consistency. Common names are often shorter and more familiar but can be ambiguous. Learning both systems helps with understanding different chemistry texts and contexts.