Re. Hoffman et al., SELF-DIFFUSION MEASUREMENTS OF POLYCYCLIC AROMATIC HYDROCARBON ALKALI-METAL SALTS, Journal of the Chemical Society. Perkin transactions. II (Print), (7), 1998, pp. 1659-1664
The solvations of various polycyclic aromatic hydrocarbon alkali metal
salts are studied using their self-diffusion rates measured by NMR sp
ectroscopy. The moiety size is more dependent on the anion than the ca
tion, The self-diffusion rates of the neutral compounds are found to b
e predictable while the salts diffuse considerably slower than the uns
olvated species indicating the presence of a solvent shell. The appare
nt moiety size is temperature dependent for the salts in ethereal solu
tions indicating a solvation shell of varying size.