Open main menu
Home
Random
Recent changes
Special pages
Community portal
Preferences
About Wikipedia
Disclaimers
Incubator escapee wiki
Search
User menu
Talk
Dark mode
Contributions
Create account
Log in
Editing
Functional group
(section)
Warning:
You are not logged in. Your IP address will be publicly visible if you make any edits. If you
log in
or
create an account
, your edits will be attributed to your username, along with other benefits.
Anti-spam check. Do
not
fill this in!
===Names of radicals or moieties=== These names are used to refer to the moieties themselves or to radical species, and also to form the names of halides and substituents in larger molecules. When the parent hydrocarbon is unsaturated, the suffix ("-yl", "-ylidene", or "-ylidyne") replaces "-ane" (e.g. "ethane" becomes "ethyl"); otherwise, the suffix replaces only the final "-e" (e.g. "[[ethyne]]" becomes "[[ethynyl]]").<ref name="qmul"/> When used to refer to moieties, multiple single bonds differ from a single multiple bond. For example, a [[methylene bridge]] (methanediyl) has two single bonds, whereas a [[methylidene group]] (methylidene) has one double bond. Suffixes can be combined, as in methylidyne (triple bond) vs. methylylidene (single bond and double bond) vs. methanetriyl (three double bonds). There are some retained names, such as [[methylene group|methylene]] for methanediyl, 1,x-[[phenylene]] for phenyl-1,x-diyl (where x is 2, 3, or 4),<ref>{{cite web|url=https://www.acdlabs.com/iupac/nomenclature/93/r93_271.htm|title=R-2. 5 Substituent Prefix Names Derived from Parent Hydrides|publisher=IUPAC|year=1993|access-date=2018-12-15|archive-date=2019-03-22|archive-url=https://web.archive.org/web/20190322061930/https://www.acdlabs.com/iupac/nomenclature/93/r93_271.htm|url-status=live}} section P-56.2.1</ref> [[carbyne]] for methylidyne, and [[trityl]] for triphenylmethyl. {| class="wikitable" |- ! [[Chemical class]] !! Group !! Formula !! Structural formula !! Prefix !! Suffix !! Example |- | Single bond || || R• || || Ylo-<ref>{{cite web|url=http://www.chem.qmul.ac.uk/iupac/ions/RC813.html|title=Revised Nomenclature for Radicals, Ions, Radical Ions and Related Species (IUPAC Recommendations 1993: RC-81.3. Multiple radical centers)|access-date=2014-12-02|archive-url=https://web.archive.org/web/20170611171918/http://www.chem.qmul.ac.uk/iupac/ions/RC813.html|archive-date=2017-06-11|url-status=dead}}</ref> || -yl || {{center|[[Methyl group]]<br>[[Methyl radical]]}} |- | Double bond || || R: || || ? || -ylidene || {{center|[[Methylidene]]}} |- | Triple bond || || R⫶ || || ? || -ylidyne || {{center|[[Methylidyne]]}} |- | Carboxylic [[acyl]] radical || Acyl || R−C(=O)• || || ? || -oyl || {{center|[[Acetyl]]}} |}
Edit summary
(Briefly describe your changes)
By publishing changes, you agree to the
Terms of Use
, and you irrevocably agree to release your contribution under the
CC BY-SA 4.0 License
and the
GFDL
. You agree that a hyperlink or URL is sufficient attribution under the Creative Commons license.
Cancel
Editing help
(opens in new window)