Thursday, January 23, 2020

nomenclature - IUPAC names accidentally differing in hyphen only


Here is an example of two compounds




$$\ce{CH3CH2COOCH3}$$ vs $$\ce{(CH3)2CHCOO-}$$



i.e.



enter image description here
vs
enter image description here



whose possible IUPAC names




methyl propanoate
vs
methylpropanoate



accidentally differ only in presence/absence of a space. (Note that complete, unambiguous name of the second compound is 2-methylpropanoate)


Is there an (accidental) example of two IUPAC names for different compounds, that differ only in presence/absence of a hyphen ("-") instead?


(Question might sound hypothetical, strange and inappropriate, but is related to to this one)


UPDATE: Mentioned ‘methylpropanoate’ preferred IUPAC name is 2-methylpropanoate. There's a better example pair:




  • phenyl acetate ($\ce{CH3COOPh}$)

  • phenylacetate ($\ce{PhCH2COO^{-}}$)


Note that in some language localized official IUPAC nomenclatures, the names really differ by the hyphen instead of the space (e.g. in Czech: fenyl-acetát vs fenylacetát), but I was wondering about the English nomenclature.




No comments:

Post a Comment

digital communications - Understanding the Matched Filter

I have a question about matched filtering. Does the matched filter maximise the SNR at the moment of decision only? As far as I understand, ...