Table 3.

Second Order Rate Constants for the Oxidation of Triarylphosphines with Mn^IV(O)(TBP₈Cz^•+):(LA) (LA = Zn^II, B(C₆F₅)₃ or HBF₄)

P(X-Ph)3	k (M−1 s−1)
	Zn(OTf)2a	B(C6F5)3b	HBF4b
o-CH3	1.9(2)	0.6(1)	2.2(1)
m-CH3	1.8(1)	1.2(1)	0.9(1)
p-CH3	8.7(4)	6.5(4)	3.3(2)
p-H	0.99(1)	1.65(3)	2.5(3)
p-Cl	0.109(4)	0.525(5)	2.2(2)
p-CF3	0.0085(2)	0.126(9)	1.12(3)

^ain 100:1 v/v CH₂Cl₂/CH₃CN at 25 °C.

^bin CH₂Cl₂ at 25 °C