Table 6. Computed Vertical Absorption Energies (E_VA), Vertical Emission Energies (E_VE), and Band Origin (T_e) for Tyrosine^a.

	EvA		EvE		Te
S1 state	eV	nm	eV	Nm	eV	nm
CASSCF	4.83	257	4.42	281	4.59	270
CASPT2	4.49	276	4.15	299	4.28	290
Experimental27,28	4.402	282	4.09	304	-	-

^aAvailable experimental data are also included.