functional group, in organic chemistry, group of atoms within a molecule that is responsible for certain properties of the molecule and reactions in which it takes part. Organic compounds are frequently classified according to the functional group or groups they contain. For example, methanol, ethanol, and isopropanol are all classified as alcohols since each contains a functional hydroxyl group.

functional group

In molecules, any of numerous combinations of atoms that undergo characteristic chemical reactions themselves and in many cases influence the reactivity of the rest of the molecule. Organic compounds are often classified according to the functional groups they contain. Common functional groups include hydroxyl (−OH), in alcohols and phenols; carboxyl (−COOH), in carboxylic acids; carbonyl (−C=O), in aldehydes, ketones, amides, carboxylic acids, esters, and quinones; and nitro (−NO₂) and amino (−NH₂), in certain organic nitrogen compounds.

functional group [¦fəŋk·shən·əl ′grüp]

(organic chemistry)

An atom or group of atoms, acting as a unit, that has replaced a hydrogen atom in a hydrocarbon molecule and whose presence imparts characteristic properties to this molecule; frequently represented as R‒. Also known as functionality.

Mentioned in	?		References in periodicals archive	?		Encyclopedia browser	?		Full browser	?
No references found	00 Hardcover TP1180 Polyesters are polymers which contain the ester functional group in their main chain. Polyester; properties, preparation and applications by SciTech Book News We are in a new season of fitness The days of 1-on-1 personal training are being rapidly replaced by functional group exercise We are in a new season of fitness. How to Succeed with Fitness Boot Camps by Brian Devlin / Food/cooking/nutrition community 13]C NMR method suits best for determination of different functional groups derived from F [9,10]. Structure of phenol-formaldehyde polycondensates/fenooli ja ... by Paju, Jane; Pehk, Tonis; Christjanson, Peep / Proceedings of the Estonian Academy of Sciences	function unit Function, Set function-evaluation routine Functional Functional Analysis Functional analysis and modeling functional analysis diagram functional anatomy functional application functional bombing functional constraint functional database functional decomposition functional dependency functional design Functional Determinant functional diagram functional disorder functional electrical stimulation Functional Electronics Functional Equation functional error recovery functional failure functional forms analysis chart functional generator functional group functional interleaving functional language functional multiplier functional paralysis functional program functional programming functional programming language Functional Psychology functional requirement functional requirements functional residual capacity functional spaces functional specification functional specifications functional switching circuit Functional System functional test functional testing functional unit Functionalism functionality Functions, Increasing and Decreasing Functions, Theory of functor Fund	Functional food Functional food Functional food Functional Food Science Centre Functional foods Functional foods Functional Foods and Nutraceuticals functional form functional form functional form functional form functional form of supporting structure functional form of supporting structure functional form of supporting structure functional form of supporting structure functional form of supporting structure functional forms analysis chart Functional Gastrointestinal Disorders Functional Gene Cluster Profile Functional Gene Pipeline Repository functional generator functional genomics functional genomics Functional Genomics and Stem Cell Science Functional Genomics Center Zurich Functional Genomics Data Pipeline Functional Genomics of Abiotic Stress Functional Genomics of Organellar Introns Database Functional Grade Functional Ground Testing functional group Functional Group Code Functional Group Equivalent Weight Functional Group Interconversions Functional Group Number Functional Group of Users Functional Group-Depolymerization, Vaporization, Cross-Linking Functional groups Functional groups Functional groups Functional Hazard Assessment Functional Health Analysis Profile functional health history Functional Health Status functional hearing loss functional hearing loss Functional Hepatic Blood Flow Functional Hepatic Nitrogen Clearance Functional Hierarchy Functional Holography Functional Hybrid Modeling Functional hyperemia functional hypertrophy functional hypertrophy functional hypertrophy Functional Identification Number functional ileus functional ileus functional ileus functional ileus Functional illiteracy

Mentioned in

References in periodicals archive

Encyclopedia browser

Full browser

No references found

00 Hardcover TP1180 Polyesters are polymers which contain the ester functional group in their main chain.

Polyester; properties, preparation and applications by SciTech Book News

We are in a new season of fitness The days of 1-on-1 personal training are being rapidly replaced by functional group exercise We are in a new season of fitness.

How to Succeed with Fitness Boot Camps by Brian Devlin / Food/cooking/nutrition community

13]C NMR method suits best for determination of different functional groups derived from F [9,10].

Structure of phenol-formaldehyde polycondensates/fenooli ja ... by Paju, Jane; Pehk, Tonis; Christjanson, Peep / Proceedings of the Estonian Academy of Sciences

function unit

Function, Set

function-evaluation routine

Functional

Functional Analysis

Functional analysis and modeling

functional analysis diagram

functional anatomy

functional application