Column chromatography: separating ferrocene and acetylferrocene
On silica, the less polar ferrocene (yellow) is eluted first; the more polar acetylferrocene (dark orange) needs a more polar eluent, and the polar impurity stays near the top.
On silica, the less polar ferrocene (yellow) is eluted first; the more polar acetylferrocene (dark orange) needs a more polar eluent, and the polar impurity stays near the top.