Table 4. Three Largest Absolute Magnitude Coupling Coefficients of MULTIMODE Frequencies for gauche-Ethanol.

gauche-ethanol
MULTIMODE frequency	coupling modes	quanta	coeff.
2880	CH2–sstr	ν16	0.5852
	CH3–sdef + CH3–adef″	ν12 + ν14	–0.4138
	CH3–adef′	2ν13	0.2968
2923	CH3–adef″	2ν14	–0.5771
	CH3–sstr	ν17	–0.4987
	CH3–adef′	2ν13	–0.3752
2931	CH2–astr	ν18	–0.5134
	CH3–adef′ + CH2–sdef	ν13 + ν15	0.4367
	CH3–adef″ + CH2–sdef	ν14 + ν15	0.4249
2950	CH2–astr	ν18	0.5068
	CH2–sdef	2ν15	–0.4341
	CH3–adef″ + CH2–sdef	ν14 + ν15	0.4097
2959	CH2–sdef	2ν15	–0.6244
	CH3–astr′	ν19	–0.4643
	CH2–astr	ν18	–0.4046
2978	CH3–astr″	ν20	0.8087
	CH3–adef″ + CH2–sdef	ν14 + ν15	0.3754
	CH3–astr′	ν19	–0.2759
2979	CH2–sdef	2ν15	0.5336
	CH3–astr′	ν19	–0.5294
	CH3–adef″ + CH2–sdef	ν14 + ν15	0.3885