Iron atoms I Metal atom synthesis I Iron arene complexes Metal Atom Synthesis, Properties, and Structure of pz-(q3,q3-Toluene)bis(q6-toluene)iron
Metal atom cocondensation of iron atoms and toluene produ-ligands. Black thermolabile 3 was characterized by low-temces the mononuclear iron sandwich compound [(q6-tolu-perature IH-, 13C-, and MoBbauer spectroscopy as well as by ene)(q*-toluene)Fe] 1. Complex 1 reacts with a palette of N-an X-ray structure analysis (-173OC). The X-ray structure containing ligands such as primary, secondary, and tertiary determination reveals a p-q3:q3-bridging toluene ligand amines as well as pyridine, pyrrolidine, and tmeda to form capping two ((q6-toluene)FeJ units which are connected by highly reactive instable intermediates. In the temperature an Fe-Fe bond [2.746(1) A]. However, in solution up to range from -80 to -3O"C, the proposed intermediates react -30°C all three toluene ligands are fluxional according to with toluene to form the first homoleptic Feltoluene complex 'H-and 13C-NMR data. At -10 "C 3 reacts with CO with de-p2-(q3:q3-toluene)-bis(q6-toluene)iron (3) regard-composition to form Fe metal. With 2,2-bipyridine and less which N-containing ligand is used. Additionally, 3 is also ethene no reaction is observed up to room temperature. formed when ethanol is used instead of N-containing base