5
$\begingroup$

What would this aromatic boron compound be called?

enter image description here

$\endgroup$
  • 1
    $\begingroup$ Label the atoms. $\endgroup$ – user38977 May 14 '17 at 16:28
  • 6
    $\begingroup$ Is this 1H-Borepin $\endgroup$ – user237650 May 14 '17 at 16:41
  • $\begingroup$ @blue I used CPK coloring code for atoms. See en.wikipedia.org/wiki/CPK_coloring $\endgroup$ – Pritt Balagopal May 15 '17 at 0:45
  • 4
    $\begingroup$ @PrittBalagopal You should mention that in your question to avoid confusion. I wasn't sure what colouring scheme you were using. $\endgroup$ – user38977 May 15 '17 at 1:04
11
$\begingroup$

According to the current version of Nomenclature of Organic Chemistry – IUPAC Recommendations and Preferred Names 2013 (Blue Book), heteromonocyclic compounds with up to and including ten ring members are named by the extended Hantzsch–Widman system. According to P-68.1.1.3.2, this also applies to heterocyclic parent hydrides containing Group 13 (boron group) atoms.

The Hantzsch-Widman system stem for an unsatured 7-membered ring is “epine”. Therefore, the preferred name for the compound that is given in the question is 1​H-borepine.
The name 1​H-1-boracyclohepta-2,4,6-triene is not recommended.

$\endgroup$
  • 2
    $\begingroup$ Unsaturated or fully conjugated 7-member ring? Do we use epine for the cycloalkene formulated C7H12? $\endgroup$ – Oscar Lanzi May 14 '17 at 17:48
  • $\begingroup$ @OscarLanzi H-W system is for heterocycles, not alkenes. $\endgroup$ – Mithoron May 17 '17 at 23:01
  • $\begingroup$ Then presumably the words "fully conjugated" should be used instead of "unsaturated". $\endgroup$ – Oscar Lanzi May 17 '17 at 23:14
6
$\begingroup$

If the black coloured are carbon atoms and the white coloured are hydrogen atoms, and the pink one is Boron. Then it should be 1H-Borepine.

enter image description here [Source: Chemspider]

See here for why it is aromatic.

$\endgroup$
  • 4
    $\begingroup$ There is a standard color code for ball and stick models. True, carbon = black, hydrogen = white, boron = that pretty pink color. Some others : oxygen = red, nitrogen = blue, chlorine = yellowish green like the gas. $\endgroup$ – Oscar Lanzi May 14 '17 at 17:41
  • 1
    $\begingroup$ @Mesentery Thanks for your answer. There is in fact a color code for atoms. See en.wikipedia.org/wiki/CPK_coloring $\endgroup$ – Pritt Balagopal May 15 '17 at 0:42

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.