Fig. 2: The change in pyramidalization observed for UN3 and US3 with pressure.

a Increased pyramidalization of UN3 with pressure, and planarization of US3 with pressure. b Key distances and angles and their change with pressure for the two compounds, with computed values in brackets. UN3 = U(N(SiMe3)2)3 and US3 = U(SAr)3 where SAr = arylthiolate S-tBu3−2,4,6-C6H2.