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In chemistry, the suffix -yne is used to denote the presence of a
In chemistry, the suffix -yne is used to denote the presence of a triple bond
A triple bond in chemistry is a chemical bond between two atoms involving six bonding electrons instead of the usual two in a covalent single bond. Triple bonds are stronger than the equivalent single bonds or double bonds, with a bond order o ...
.
The suffix follows IUPAC nomenclature
A chemical nomenclature is a set of rules to generate systematic names for chemical compounds. The nomenclature used most frequently worldwide is the one created and developed by the International Union of Pure and Applied Chemistry (IUPAC).
T ...
, and is mainly used in organic chemistry. However, inorganic compounds featuring unsaturation in the form of triple bonds may be denoted by substitutive nomenclature with the same methods used with alkynes, i.e., the name of the
corresponding saturated hydride is modified by replacing the "-ane" ending with "-yne". The suffix "-diyne" is used when there are two triple bonds, and so on. The position of unsaturation is indicated by a numerical locant immediately preceding the "-yne" suffix, or locants in the case of multiple triple bonds. Locants are chosen to be as low as possible. While generally used as a suffix, "-yne" is also used as an infix to name substituent groups that are triply bound to the parent compound.
This suffix arose as a collapsed form of the end of the word '' acetylene''. The final "-e" disappears if it is followed by another suffix that starts with a vowel.
See also
*IUPAC nomenclature of organic chemistry
In chemical nomenclature, the IUPAC nomenclature of organic chemistry is a method of naming organic chemical compounds as recommended by the International Union of Pure and Applied Chemistry (IUPAC). It is published in the '' Nomenclature of O ...
References
{{Orgchemsuffixes yne Alkynes