I just chanced upon these intriguing pubchem entries: Ethyl Carbylamine and Ethyl Isocyanide. Their structures - as given on that site - are respectively:

enter image description here and enter image description here.

Notice that the only difference is the H atom on ethyl carbylamine, which is missing in ethyl isocyanide!

I always understood carbylamine and isocyanide being interchangeable suffixes for an IUPAC name, but it seems like I've been proved wrong.

What is the reason for such an anomaly in the structures of these two compounds?

  • 2
    $\begingroup$ No, you weren't wrong. PubChem isn't as good as one could hope. $\endgroup$ – Mithoron Jan 3 '18 at 18:21
  • $\begingroup$ @Mithoron Could you please post an answer so I could accept it? Thank you! $\endgroup$ – Gaurang Tandon Jan 7 '18 at 11:53
  • $\begingroup$ Both carbylamine and isocyanide are same. It is only that carbylamine has become obsolete. See: goldbook.iupac.org/terms/view/C00853 $\endgroup$ – Nilay Ghosh Oct 7 at 6:27

Your Answer

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

Browse other questions tagged or ask your own question.