TABLE III.

Polarizabilities for aromatic amino acids [20–24], in units of 1 au = 1.64878 × 10⁻⁴¹C²m²J⁻¹, with $\overline{\alpha }=\sqrt{{\alpha }_{xx}^2+{\alpha }_{yy}^2+{\alpha }_{zz}^2}$. For further details, see comments surrounding Equation (5).

Amino Acid	ᾱ	αxx	αyy	αzz
Trp	153.4	119.5	91.6	29.4
Tyr	129.3	89.5	43.0	82.9
Phe	118.1	79.0	79.0	38.6