Acetylation Of Ferrocene

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of measuring the presence of a
given substance. Both methods turn around a compounds polarity. As one recalls,
polarity is a measure of the electronegativity of a compound determined by their
placement in the periodic chart. Specifically, in this lab we are talking about
the difference in polarity between the atoms of oxygen and carbon. Ferrocene is
relatively low to none in polarity. Acetylferrocene, because of the carbonyl
functional group, is more polar than the ferrocene. Moreover, diacetylferrocene,
because of the 2:1 ratio of the carbonyl groups over the acetylferrocene, is the
most polar of the lot.
As stated above, both TLC and CG take advantage of polarity. Both
methods have an extremely polar stationary phase; specifically, silica or
alumina gel is used. Through this polar stationary phase, a mobile liquid phase
is passed. Now, one can think of a polar stationary phase as a bully that waits
in the high school halls for his hooligan friends. His hooligan ...

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was not the original
ferrocene start material. Please see the pre-lab for reproductions of the TLC
plates used in this lab. Also see table 1.2 for Rf values.
As one can see, this crude's Rf is half that of the start material.
This indicates that a reaction has definitely occurred. Next we performed an
extraction on this sample with Methylene Chloride (MeCl) and Sodium Hydroxide
(OH-). Please see the pre-lab for a picture of what the extraction looked like.
Then we transferred the lower organic potion into another vial with a little
sodium sulfate for drying. Then we transferred this to a tarred vial and dried
off the MeCl in a nitrogen stream. MeCl is a great solvent because ...

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