Table 1.

A summary of the important bonds and distances involving PT process of enol form for all complexes in the S₀ and S₁ states.

Compound	Important Bond Distance (Å)
	S0 State					S1 State
	O1–H1	O2⋯H1	Ow⋯H1	Ow–Hw	O2⋯Hw	O1–H1	O2⋯H1	Ow⋯H1	Ow–Hw	O2⋯Hw
3HF	0.983	1.920				1.017	1.706
3HFW	1.000	2.387	1.630	0.984	1.723	1.069	2.439	1.394	1.008	1.572
Form I	0.979	1.978				1.002	1.804
Form II	0.981	2.177				0.996	2.080
Form I-W	1.009	2.390	1.585	0.977	1.808	1.030	2.415	1.503	0.978	1.903
Form II-W	1.004	2.429	1.612	0.983	1.733	1.078	2.452	1.375	1.006	1.581