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
Mercury Prize Prize's organisers of "banning" the band's self-released album, "m b v", from the shortlist nominations and addressing the nomination criteria, which he claimed branded the album "virtually illegal". It has also been noted that heavy metal has been overlooked by the prize. A 2013 article by "Vice" on the Mercury Prize said "Metal certainly never gets a look-in, not even on the official entry information form: 'The Prize is open to all types of music, including pop, rock, folk, urban, dance, jazz, blues, electronica, classical…'" The only metal record that has ever been nominated for the Mercury Prize is "Troublegum"