Reactions of electrophiles with transition metal carbonyl anions

The chemistry of compounds containing metal-metal bonds has attracted many inorganic chemists' interest. This research is based on reactions between metal carbonyl anions (Na2Fe(CO)4, Na2Cr(CO)5, and KFe(ç^5-C5H5)(CO)2) and transition metal halides in an attempt to make polynuclear metal cluster compounds via salt elimination reactions. Except metal-metal compound synthesis in the reaction between metal carbonyl anion and metal halides, oxidation and reduction is also a reaction of importance in chemistry. As it devised to make a metal-metal bonded compound, it shows few trace of the metal-metal compound. After initial metal-metal bond formation, products mainly proceed to characteristic of red-ox reactions by electron transfer. Between the acceptor (metal halide cation) and donor (metal carbonyl anion) metal of intermediate mixed metals, rapid electron transfer occurs by the condition depending on the reactant and environment.