Reduction of the Slater–Condon parameters^a of 5/6p semi-core electrons derived from LF-DFT.

	F 2(p,p) (eV)			ζ 5/6p (eV)
	[M(H2O)9]3+	MBr3(OPcy)3	Δ red b	[M(H2O)9]3+	MBr3(OPcy)3	Δ red b
CeIII	28%	70%	42%	18%	47%	29%
NdIII	21%	43%	22%	15%	28%	13%
AmIII	19%	45%	25%	14%	27%	12%

^aSee ESI for Slater–Condon parameters.

^b Δ _red refers to the difference between the aquo and MBr3(OPcy)3 (M = Ce, Nd, Am) complexes.