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See also adduction
Adduction

Adduction is a movement which brings a limb ? arm or leg ? closer to the Sagittal#Planes of the body. It is opposed to abduction .This term is also used in reference to the operation of the muscle in anatomy or musculature....
, one of the anatomical terms of motion
Anatomical terms of motion

The movement of body structures is accomplished by the contraction of muscles. Muscles may move parts of the skeleton relatively to each other, or may move parts of internal organs relatively to each other....
.
An adduct (from the Latin adductus, "drawn toward") is a product of a direct addition of two or more distinct molecules, resulting in a single reaction product containing all atoms of all components, with formation of two chemical bonds and a net reduction in bond multiplicity in at least one of the reactants. The resultant is considered a distinct molecular species.






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See also adduction
Adduction

Adduction is a movement which brings a limb ? arm or leg ? closer to the Sagittal#Planes of the body. It is opposed to abduction .This term is also used in reference to the operation of the muscle in anatomy or musculature....
, one of the anatomical terms of motion
Anatomical terms of motion

The movement of body structures is accomplished by the contraction of muscles. Muscles may move parts of the skeleton relatively to each other, or may move parts of internal organs relatively to each other....
.
An adduct (from the Latin adductus, "drawn toward") is a product of a direct addition of two or more distinct molecules, resulting in a single reaction product containing all atoms of all components, with formation of two chemical bonds and a net reduction in bond multiplicity in at least one of the reactants. The resultant is considered a distinct molecular species. Examples include the adduct between hydrogen peroxide
Hydrogen peroxide

Hydrogen peroxide is a very pale blue liquid which appears colorless in a dilute solution, slightly more viscous than water. It is a weak acid....
 and sodium carbonate
Sodium carbonate

Sodium carbonate , , is a sodium salt of carbonic acid. It most commonly occurs as a crystalline heptahydrate, which readily efflorescence to form a white powder, the monohydrate....
 to give sodium percarbonate
Sodium percarbonate

Sodium percarbonate is a white crystalline water-soluble chemical compound of sodium carbonate and hydrogen peroxide.It is an oxidizing agent and ingredient in a number of home and laundry detergent products....
, and the addition of sodium bisulfite
Sodium bisulfite

Sodium hydrogen sulfite or sodium bisulfite is a chemical compound with the chemical formula NaHSO3. Sodium bisulfite is a food additive with E number E222....
 to an aldehyde
Aldehyde

An aldehyde is an organic compound containing a terminal carbonyl group. This functional group, which consists of a carbon atom bonded to a hydrogen atom and double bond to an oxygen atom , is called the aldehyde group....
 to give a sulfonate
Sulfonate

A sulfonate is a Salt_ or ester of a sulfonic acid. It contains the functional group R-SO2O-....
.

Adducts often form between Lewis acid
Lewis acid

A Lewis acid is a chemical compound, A, that can accept a pair of electrons from a Lewis base, B, that acts as an electron-pair donor, forming an adduct, AB.Gilbert N....
s and Lewis bases. A good example would be the formation of adducts between the Lewis acid borane
Borane

In chemistry, a borane is a chemical compound of boron and hydrogen. The boranes comprise a large group of compounds with the generic formulae of BxHy....
 and the oxygen atom in the Lewis bases, tetrahydrofuran
Tetrahydrofuran

Tetrahydrofuran is a colorless, water-miscible organic liquid with low-viscosity at "room" temperature and pressure . It is a Heterocyclic compound compound with a chemical formula C4H8O, and is the fully Hydrogenation analog of the aromatic organic compound furan....
 (THF) or diethyl ether
Diethyl ether

Diethyl ether, also known as ether and ethoxyethane, is a clear, colorless, and highly flammable liquid with a low boiling point and a characteristic odor....
: BH3•THF, BH3•OEt2. Compounds or mixtures that cannot form an adduct because of steric hindrance are called frustrated Lewis pair
Frustrated Lewis pair

In chemistry, a Frustrated Lewis pair is a compound or mixture containing a Lewis acid and a Lewis base that, because of steric hindrance, cannot combine to form an adduct....
s.

Adducts are not necessarily molecular in nature. A good example from solid-state chemistry
Solid-state chemistry

Solid-state chemistry is the study of the synthesis, structure, and physical properties of solid materials. It therefore has a strong overlap with solid-state physics, mineralogy, crystallography, ceramics, metallurgy, thermodynamics, materials science and electronics with a focus on the synthesis of novel materials and their characterization...
 are the adducts of ethylene or carbon monoxide of CuAlCl4. The latter is a solid with an extended lattice structure. Upon formation of the adduct a new extended phase is formed in which the gas molecules are incorporated (inserted) as ligand
Ligand

In chemistry, a ligand is either an atom, ion, or molecule that bonds to a central metal, generally involving formal donation of one or more of its electrons....
s of the copper atoms within the structure. This reaction can also be considered a reaction between a base and a Lewis acid with the copper atom in the electron-receiving and the pi electrons of the gas molecule in the donating role.