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Seminar Assignments - Report For Ferrocene Lab
Course: Fundmtl Anlytcl Chem-Bch/Nonch (CH 455)
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University: University of Texas at Austin
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CH 431 – Inorganic Chemistry
Experiment V: Preparation and Purification of Ferrocene
Quynh Sam
Siri Manjunath, Rafael Williams
Abstract
In this experiment, ferrocene was synthesized by reacting FeCl2∙4H2O with freshly
cracked cyclopentadiene in the presence of KOH. The amount of crude ferrocene was
obtained at 30.3% yield. The crude ferrocene was then purified by sublimation, after
which it was obtained at 19.9% yield. The product was then analyzed using IR
spectroscopy. The Fe-Cp bond was characterized by a peak at 473.66 cm-1.
Introduction
Ferrocene was first synthesized in 1961 by P.L. Paulson during an attempt to create
fulvalene. Although by mistake, the discovery of ferrocene was a major breakthrough in
organometallic chemistry. Ferrocene belongs to a class of compounds known as sandwich
compounds, where a metal is bonded to two organic aromatic compounds. More specifically,
ferrocene is a type of metallocene, a subset of sandwich compounds describing molecules where
a metal center is bonded to two cyclopentadienyl anions.1 The cyclopentadienyl anions are flat
and aromatic in character, making them very stable. The stability of ferrocene is further
attributed to its electron count of 18, which likens it to a noble gas. Its stability, among many
other unique characteristics, has made it useful in many applications such as catalysis and
medicine.2
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