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Extended Data Fig. 4 |^31 P{^1 H} NMR spectra from competition experiments of
PC with UO 2 Cl 2 (TPO) 2. a, Initial^31 P{^1 H} NMR spectrum of UO 2 Cl 2 (TPO) 2 in
DCM-d 2 , displaying the proposed cis:trans isomers. b,^31 P{^1 H} NMR spectrum
after the addition of 20.0 equiv. PC to the solution in a. c,^31 P{^1 H} NMR spectrum
after the addition of 40.0 equiv. PC to the solution in a.