Table 4. Emission data for the excited Ru unit of RuRe(X) in DMF at 298 K (λ_ex = 460 nm), and rate constants of reductive quenching (k_q) of the excited Ru unit by BNAH.

Complex	λ em a /nm	k b /106 s–1		β b	k q c /106 M–1 s–1
		k 1	k 2
RuRe(OEt)	642	7 ± 5	1.11 ± 0.01	(4 ± 1)%	18
RuRe(Ph)	642	8 ± 3	1.10 ± 0.01	(6 ± 1)%	17
RuRe(FPh)	642	8 ± 7	1.12 ± 0.05	(7 ± 1)%	19

^aEmission peak wavelengths were measured in DMF at 298 K.10

^bEmission decay rate constants (k₁ and k₂) and initial abundance of the k₁ component (β) were measured in CH₃CN at 298 K (Fig. S6).

^cQuenching rate constants were calculated from the fraction of emission quenching by BNAH in DMF at 298 K.10,11