UK chemists tame terminal uranium nitride - UK chemists have made the world’s first terminal uranium nitride complex that is stable at room temperature. Previously terminal uranium nitrides – in which a single uranium is attached to a single nitrogen through a triple bond – had been seen only fleetingly or else isolated at temperatures a few degrees above absolute zero. Doubt had been expressed about whether such a bond could be made stable. Reference: DM King et al, Science, 2012, DOI: 10.1126/science.1223488