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. 2019 May 28;4(5):9271–9283. doi: 10.1021/acsomega.8b03364

Table 3. Calculated and Experimental Fundamental Frequencies of Methane (Unit in cm–1).

band ν1 ν2 ν3 ν4
symmetry A1 E F2 F2
Eckart calc. 2969.8 1488.1 3097.7 1253.6
exp. 291781 1533.681 3019.781 1310.882
error (%) 1.8 –3.0 2.6 –4.4