Geometrical isomers can appear as separate spots on a TLC plate, with the trans,trans isomer showing a lower Rf value due to its planar structure. The trans,trans isomer typically has a higher melting point compared to the cis,trans isomer due to more efficient packing. If both isomers are present, the melting point range may be broader, indicating their coexistence.
Dear Omymah, yes, it is possible to separate geometric isomers using TLC, provided that the chromatography is appropriate. As Abdelhak mentioned, when there is a mixture of compounds, the melting range widens, and it also lower the melting temperature. Regards."
Some isomers have the same point on TLC, and some isomers can be classified on TLC, depending on your product and the solvent. The melting points of some isomers differ by dozens of degrees. The difference in melting points also depends on the specific product.
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