Teaching organometallic chemistry is a daunting task for the instructor. A number of new concepts have to be introduced in the very first lecture. This happens because simple bonding models that help one understand organic compounds and metal complexes do not explain the structures and reactivity of many organometallic compounds and several new bonding models developed and refined in the last fifty years have to be suddenly thrust on the hapless student. Meanwhile, synthesis of new organometallic compounds continue unabated and have led to the study and discovery of fascinating reactions. Many of these reactions and compounds, having no similarity to what the student has been exposed to in organic chemistry giving the student no option but to memorize. (from nptel.ac.in)