Metal carbonyl 18-electron complexes is sometimes catalysed by catalytic amounts of oxidants, via electron-transfer. Metal carbonyls react with reducing agents such as metallic sodium or sodium amalgam to give carbonylmetalate (or carbonylate) anions: For iron pentacarbonyl, one obtains the tetracarbonylferrate with loss of CO: Mercury can insert into the metal-metal bonds of some polynuclear metal carbonyls: The CO ligand is often susceptible to attack by nucleophiles. For example, trimethylamine oxide and bistrimethylsilylamide convert CO ligands to CO and CN, respectively. In the "Hieber base reaction", hydroxide ion attacks the CO ligand to give a metallacarboxylic acid, followed by the release of carbon
Metal triflimidate used as an electrolyte in batteries as a replacement of lithium perchlorate. Metal triflimidate A metal triflimidate M(NTf) in organic chemistry is a metal salt of triflimidic acid and used as a catalyst. Metal Triflimidates are prepared by reaction of metal oxides, carbonates, hydroxides, or halides with triflimidic acid in water as the hydrate MTf·"x"HO with "x" ranging from zero to nine. Another method is by metathesis reaction between a metal Triflimidate and another metal complex by metal exchange. Commercially available salts are based on lithium and silver. The catalytic activity of metal triflimidates has been demonstrated in cycloadditions, in