chemicalcuriosities:Synthesis: First isolation of stable solid-state Bismuth(II) radicalBuilding on
chemicalcuriosities:Synthesis: First isolation of stable solid-state Bismuth(II) radicalBuilding on research from 2014, where a bismuth radical in solution was characterized, researchers have now isolated and characterized the first bismuth radical in the solid-state.•Bi(NONAr) is a thermally stable, dark red crystalline solid with a melting point of 135-137°C. It is also claimed that the compound will retain colour and crystallinity for two weeks if stored at room temperature in a dry nitrogen atmosphere.The compound was synthesised by reducing diamido bismuth(III) chloride with excess Mg over a period of 12-24 hours. If left for >48 hours, the reaction mixture decolourises and forms a black, insoluble precipitate that is thought to be Bi0.(source) -- source link