uranium | Uranium | Niger uranium forgeries | Uranium City, Saskatchewan | uranium mining | Uranium City | Uranium-235 | uranium-235 | Ranger Uranium Mine | Enriched uranium | Uranium-thorium dating | uranium-thorium dating | Uranium mining in Wyoming | Uranium City (''Tsókı̨në'') | enriched uranium |
After the discovery of ferrocene in 1951, Todd Reynolds and Geoffrey Wilkinson in 1956 synthesized the uranium metallocene Cp3UCl from sodium cyclopentadienide and uranium tetrachloride as a stable but extremely air-sensitive compound.