Bifunctionality

Organic molecule with two different functional groups

In chemistry, bifunctionality or difunctionality is the presence of two functional groups in a molecule. A bifunctional species has the properties of each of the two types of functional groups, such as an alcohol (−OH), amide (−CONH₂), aldehyde (−CHO), nitrile (−CN) or carboxylic acid (−COOH). Many bifunctional species are used to produce complex materials. They participate in condensation polymerization like polyester and polyamide.

Polyfunctional species have more than two functional groups. Most biological compounds are polyfunctional.

References

R-O-R	Acetal Alcohol Alkoxy Methoxy Ether Enol ether Epoxide Peroxy Hydroperoxy Dioxiranes Ethylenedioxy Methylenedioxy
carbonyl	Acyl Acetyl Acryloyl Benzoyl Aldehyde Ketene Ketone Ynone
carboxy	Carboxyl Acetoxy Anhydride Ester Orthoester

Nitrogen	Amine Enamine Ammonium Hydrazo Nitrene Imine Oxime Hydrazone Azo Amide Imidate Amidine Carbamate Imide Nitrile Isonitrile Cyanate Isocyanate Nitrate Nitrite Nitro Nitroso NONOate
Phosphorus	Phosphate Phosphodiester Phosphonate Phosphite Phosphonous Phosphinate Phosphine oxide Phosphine Phosphonium Phosphaalkene Phosphaalkyne Phosphaallene
Sulfur	Thiol Sulfide Sulfonium Persulfide Disulfide Sulfenic acid Thiosulfinate Sulfoxide Thiosulfonate Sulfinic acid Sulfone Sulfonic acid Thioketone Thial Thioester Thionoester Thioxanthate Xanthate
Boron	Boronic acid
Selenium	Selenol Selenonic acid Seleninic acid Selenenic acid Selone
Tellurium	Tellurol Telluroketone
Halo	Haloalkane Fluoroethyl Trifluoromethyl Trichloromethyl Trifluoromethoxy Hypervalent iodine Vinyl halide Iodide Acyl halide Chloride Perchlorate

Other

See also

chemical classification

chemical nomenclature

inorganic

organic

v t e Concepts in organic chemistry
Aromaticity Covalent bonding Functional groups Nomenclature Organic compounds Organic reactions Organic synthesis Publications Spectroscopy Stereochemistry List of organic compounds