This document provides an overview of iron nitrosyl compounds. It discusses the properties of nitric oxide and how metal nitrosyl complexes are synthesized industrially and in the lab. Specifically, it describes a laboratory experiment where bis(diethyldithiocarbamato)nitrosyl iron (Fe(NO)dtc2) is synthesized from ferrous sulfate and sodium nitrite. This is then reacted with iodine to form bis(diethyldithiocarbamato)(iodo)nitrosyl iron (FeI(NO)dtc2). Both complexes are characterized using infrared spectroscopy, NMR spectroscopy, and EPR spectroscopy to analyze the nitrosyl ligand bonding.