Table 8. LHE with Corresponding Oscillator Frequency (f_os) of R and All Investigated Molecules (AS1–AS7) in Both the Tetrahydrofuran and Gas Phase.

molecules	solvent		gas phase
	fos	LHE	fos	LHE
R	1.41	0.9611	1.40	0.9602
AS1	1.06	0.9129	0.91	0.8770
AS2	0.79	0.8378	0.68	0.7911
AS3	0.81	0.8451	0.73	0.8138
AS4	1.09	0.9187	1.10	0.9206
AS5	1.07	0.9149	1.08	0.9168
AS6	0.53	0.7049	0.44	0.6369
AS7	0.91	0.8770	0.80	0.8415