Does a GC analysis typically seperate E / Z isomers? I'm reading a paper that confirms that the product it synthesized was indeed the (E,E) isomer by coinjecting a standard sample on the GC.
My question is, had they actually made an (Z,Z) or (E,Z) or (Z,E) would a typical GC show two different peaks?
In other words, for isomer verification of this nature is a GC co-injection a sufficient control? Or would it be more prudent to co-inject standard samples of the other samples too in other runs to demonstrate that those indeed elute differently?
The paper also claims they have verified the compound as a (E,E) by a GC-MS analysis but would (E,E) (E,Z) etc. show different patterns on a GC-MS?