Table 4. Mutual Diffusion Coefficients and Distance Parameter R′ for [2AHBC]^a,b.

solvent mixture (% v/v)	Da = D × 105 (cm2 s–1)	Db = D × 105 (cm2 s–1)	R′ (Å)
100% ACN + 0% DXN	6.304	1.918	8.220
80% ACN + 20% DXN	6.155	1.155	9.370
60% ACN + 40% DXN	5.229	1.376	7.330
40% ACN + 60% DXN	4.032	1.058	9.390
20% ACN + 80% DXN	2.776	0.931	8.430
0% ACN + 100% DXN	1.564	0.666	9.430

^aD^a: diffusion coefficients by the Stokes–Einstein relation. D^b: diffusion coefficients by the finite sink model.

^b(2AHBC) R = 6.52 Å.