The understanding of functional groups is key for the understanding of all organic chemistry. In the tradition of Patai's Chemistry of Functional Groups each volume in this series treats all aspects of functional groups. Each volume contains chapters on a wide range of topics. Starting with theoretical aspects, this volume moves to analytical methods, such as thermochemistry, mass spectrometry and Mössbauer spectroscopy. This is followed by some general organic chemistry contributions on different classes of iron compounds such as Ferrocenes. This culminates in a range of articles hightlighting the use of organoiron compounds as reagents and as catalysts.