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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.
Has the lowest-numbered locants for the suffix functional group. Has the lowest-numbered locants for multiple bonds ('ene', 'yne'), and hydro prefixes. (The locant of a multiple bond is the number of the adjacent carbon with a lower number). Has the lowest-numbered locants for all substituents cited by prefixes.
In organic chemistry, an ethynyl group is a functional group with the formula −C≡CH. It is the acetylene molecule with one fewer hydrogen atom.. Ethynyl group (HC≡C–), also designated as acetylenic group (from acetylene), and referred to in IUPAC chemical nomenclature as -yne suffix.
If the other suffix starts with a consonant or "y", the final "-e" remains, e.g. "-enediyne" (which has the "-ene" suffix and also the "-yne" suffix, for a compound with a double bond and two triple bonds.) A Greek number prefix before the "-ene" indicates how many double bonds there are in the compound, e.g. butadiene.
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Download QR code; Print/export ... Help. Pages in category "Chemistry suffixes" The following 12 pages are in this category, out of 12 total. ... -yne This page was ...
Nomenclature of inorganic and organic chemistry; Standardization of atomic weights; Standardization of physical constants; Editing tables of properties of matter; Establishing a commission for the review of work; Standardization of the formats of publications; Measures required to prevent repetition of the same papers.
Because the S 2− anion has a subscript of 2 in the formula (giving a 4− charge), the compound must be balanced with a 4+ charge on the Pb cation (lead can form cations with a 4+ or a 2+ charge). Thus, the compound is made of one Pb 4+ cation to every two S 2− anions, the compound is balanced, and its name is written as lead(IV) sulfide .