Extended Data Fig. 3 |^31 P{^1 H} NMR spectra from competition experiments of
1, 2a and TPO. a,^31 P{^1 H} NMR spectrum of 2.0 equiv. 1 with 1.0 equiv.
UO 2 Cl 2 (TPO) 2 in DCM-d 2. Relative integrations are shown in red. b,^31 P{^1 H} NMR
spectra of in situ reactions of 1.0 equiv. 2a with 1.0 equiv. UO 2 Cl 2 (TPO) 2 in
DCM-d 2. Rapid precipitation of a yellow solid was observed. Top,^31 P{^1 H} NMR
spectrum of the DCM-d 2 supernatant. An unknown byproduct at 47 ppm is
observed. Bottom,^31 P{^1 H} NMR spectrum of the filtrate dissolved in PC with a
DCM-d 2 capillary tube.